# Loopaloo

> 155+ free browser-based tools for image, audio, video, PDF, CSV, document processing, converters, math, web utilities, and games. All tools run locally in your browser - no uploads, no server processing.

- [Homepage](https://loopaloo.com)
- [About](https://loopaloo.com/about)
- [All Tools](https://loopaloo.com/tools)
- [Blog](https://loopaloo.com/blog)
- [Full tool reference](https://loopaloo.com/llms-full.txt)

## Categories

- [Image Processing](https://loopaloo.com/image)
- [Audio Processing](https://loopaloo.com/audio)
- [Video Processing](https://loopaloo.com/video)
- [Document & Text](https://loopaloo.com/document)
- [PDF Tools](https://loopaloo.com/pdf)
- [CSV & Data Analysis](https://loopaloo.com/csv)
- [Converters & Encoders](https://loopaloo.com/converter)
- [Web Tools](https://loopaloo.com/web)
- [Math & Science](https://loopaloo.com/math)
- [Games](https://loopaloo.com/game)

## Tools

### Image Processing

- [Color Blindness Simulator](https://loopaloo.com/tools/color-blindness-simulator): Test how your images and designs appear to people with different types of color vision deficiency including protanopia, deuteranopia, tritanopia, and more
- [Image Cropper](https://loopaloo.com/tools/image-cropper): Crop and trim images with precision visual selection. Features aspect ratio presets (1:1, 16:9, 4:3), free-form cropping, grid overlays, and pixel-perfect adjustments for professional results.
- [Image Resizer](https://loopaloo.com/tools/image-resizer): Resize and scale images with smart aspect ratio control. Supports custom dimensions, percentage scaling, social media presets, and batch resizing while maintaining image quality.
- [Image Format Converter](https://loopaloo.com/tools/image-converter): Convert images between PNG, JPG, WebP, AVIF, BMP formats. Features quality control, transparency support, and batch conversion for efficient workflow.
- [Image Compressor](https://loopaloo.com/tools/image-compressor): Compress images to reduce file size while maintaining visual quality. Supports lossy and lossless compression with real-time preview and size comparison.
- [Image Filters](https://loopaloo.com/tools/image-filters): Apply professional photo filters: blur, sharpen, grayscale, sepia, invert, vintage, and more. Features preset effects and custom adjustments for stunning results.
- [Image Color Grader](https://loopaloo.com/tools/image-color-grader): Professional color grading: adjust brightness, contrast, saturation, hue, shadows, highlights, and temperature. Create cinematic looks with color curves.
- [Image Watermark](https://loopaloo.com/tools/image-watermark): Add text or image watermarks to protect your photos. Features position control, opacity adjustment, tiled patterns, and batch processing for copyright protection.
- [Image Rotation & Flip](https://loopaloo.com/tools/image-rotation): Rotate images to any angle and flip horizontally or vertically. Features precise degree control, 90° quick rotations, and straightening tools.
- [Image Background Remover](https://loopaloo.com/tools/image-background-remover): Remove backgrounds from images with smart edge detection. Supports color picker, corner detection, and preset colors with adjustable tolerance.
- [Image to ASCII Art](https://loopaloo.com/tools/image-to-ascii): Convert images to ASCII text art with customizable character sets. Features width control, color/monochrome modes, and multiple character density options.
- [Image Pixelator](https://loopaloo.com/tools/image-pixelator): Create pixelated effects with square, circle, diamond, or hexagon shapes. Features presets for retro gaming, mosaic art, and privacy blur effects.
- [Image Color Palette Extractor](https://loopaloo.com/tools/image-color-palette): Extract dominant, vibrant, or muted colors from images. Generate color schemes with HEX, RGB, HSL values and export palettes for design projects.
- [Image Batch Processor](https://loopaloo.com/tools/image-batch-processor): Process multiple images at once with consistent settings. Apply resize, format conversion, compression, and filters to bulk images efficiently.
- [Image Collage Maker](https://loopaloo.com/tools/image-collage-maker): Create beautiful photo collages with flexible grid layouts. Features customizable spacing, background colors, borders, and multiple arrangement options.
- [GIF Maker - Create Animated GIFs from Images](https://loopaloo.com/tools/gif-maker): Create animated GIFs from multiple images with custom frame timing, size presets, and loop options. Drag and drop to reorder frames, set individual delays, and preview your animation in real-time.
- [Image Edge Detector](https://loopaloo.com/tools/image-edge-detector): Detect and highlight edges using Sobel, Canny, and other algorithms. Features threshold control, direction filters, and contour extraction.
- [Image Histogram](https://loopaloo.com/tools/image-histogram): Analyze color distribution with RGB, luminance, and individual channel histograms. Features exposure analysis, statistics, and comparison tools.
- [Image Metadata Viewer](https://loopaloo.com/tools/image-metadata-viewer): Read EXIF, IPTC, XMP metadata from images. View camera settings, GPS location, date taken, color profiles, and technical image properties.
- [Image to Icon Generator](https://loopaloo.com/tools/image-icon-generator): Generate favicons and app icons in all required sizes. Supports iOS, Android, Windows, and web platforms with one-click preset generation.
- [Image Metadata Remover](https://loopaloo.com/tools/image-metadata-remover): Strip EXIF, GPS, camera data and other metadata for privacy. Features selective removal, batch processing, and metadata preview before removal.
- [Image Text Extractor (OCR)](https://loopaloo.com/tools/image-text-extractor): Extract text from images using advanced OCR. Supports 18+ languages, page segmentation modes, confidence scores, and multi-format export.
- [Drawing Canvas & Whiteboard](https://loopaloo.com/tools/drawing-canvas): Free online drawing canvas and whiteboard. Draw, sketch, and create with brushes, shapes, colors, undo/redo, and export to PNG or JPG.
- [Placeholder Image Generator](https://loopaloo.com/tools/placeholder-image-generator): Generate placeholder images for mockups, wireframes, and development. Custom dimensions, colors, text. Presets for social media, avatars, web. Export as PNG, JPG, or SVG.
- [Image Annotator](https://loopaloo.com/tools/image-annotator): Annotate images with arrows, shapes, text, highlights, and blur regions. Perfect for screenshot markup, tutorials, and documentation.
- [Image to Base64](https://loopaloo.com/tools/image-to-base64): Convert images to Base64 encoded strings for embedding in CSS, HTML, or JavaScript. Multiple output formats available.
- [SVG to PNG/JPG](https://loopaloo.com/tools/svg-to-raster): Convert SVG vector graphics to high-quality raster images (PNG, JPG, WebP) with custom scaling and background options.
- [SVG Optimizer](https://loopaloo.com/tools/svg-optimizer): Optimize and minify SVG files by removing unnecessary metadata, comments, and whitespace while preserving visual quality.
- [Sprite Sheet Generator](https://loopaloo.com/tools/sprite-sheet-generator): Create sprite sheets from multiple images with JSON metadata, or slice existing sprite sheets into individual frames. Perfect for game development.
- [Texture Generator](https://loopaloo.com/tools/texture-generator): Generate seamless tileable textures using Perlin noise, Simplex noise, Voronoi cells, and FBM. Customize colors with gradient editor. Export at multiple resolutions.
- [Image Diff Comparator](https://loopaloo.com/tools/image-diff-comparator): Compare two images pixel-by-pixel. Multiple comparison modes: side-by-side, overlay, difference highlighting, onion skin, and slider. Perfect for visual regression testing.
- [Meme Generator](https://loopaloo.com/tools/meme-generator): Create memes with customizable text overlays. Add multiple text layers, adjust fonts, colors, and positions.
- [Screenshot Beautifier](https://loopaloo.com/tools/screenshot-beautifier): Add beautiful backgrounds, shadows, and frames to screenshots. Perfect for presentations and social media.
- [3D Model Viewer](https://loopaloo.com/tools/3d-model-viewer): View and inspect 3D models in GLTF, GLB, OBJ, STL, and FBX formats. Features orbit controls, wireframe mode, lighting presets, and screenshot export.
- [Chord Diagram Generator](https://loopaloo.com/tools/chord-diagram-generator): Create chord diagrams for guitar, ukulele, and bass. Choose from chord library or build custom fingerings. Export as PNG or SVG.
- [QR Code Reader & Scanner](https://loopaloo.com/tools/qr-code-reader): Scan QR codes from images or using your camera. Supports URLs, WiFi, contacts, emails, phone numbers, and more. 100% offline - no data uploaded.
- [Barcode Reader & Scanner](https://loopaloo.com/tools/barcode-reader): Scan barcodes from images or camera. Supports EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, ISBN, and more. Search products instantly.
- [Image to SVG Tracer](https://loopaloo.com/tools/image-to-svg-tracer): Convert raster images (PNG, JPG) to scalable SVG vector graphics. Black & white or color tracing with adjustable threshold, smoothing, blur, and path options.
- [Image Upscaler](https://loopaloo.com/tools/image-upscaler): Enlarge images up to 4x while preserving quality. Uses advanced interpolation algorithms (Bilinear, Bicubic, Lanczos) with optional sharpening.

### Audio Processing

- [Audio Trimmer & Cutter](https://loopaloo.com/tools/audio-trimmer): Trim, cut, and slice audio files with interactive waveform visualization. Drag handles to select portions, use keyboard shortcuts, zoom and pan, preview selection before export. Supports MP3, WAV, OGG, AAC.
- [Audio Format Converter](https://loopaloo.com/tools/audio-format-converter): Convert audio files between WAV, MP3, OGG, AAC, M4A, FLAC formats online. Adjust bitrate and quality settings. Free browser-based conversion with no file uploads to servers.
- [Audio Merger & Joiner](https://loopaloo.com/tools/audio-merger): Combine multiple audio files into one track. Drag and drop to reorder, merge MP3s, WAVs, and other formats. Create seamless audio compilations online.
- [Audio Volume Normalizer](https://loopaloo.com/tools/volume-normalizer): Normalize audio loudness using Peak, RMS, or LUFS standards. Apply streaming presets (-14 LUFS for Spotify/YouTube), broadcast (-23 LUFS), or CD mastering levels. Visual loudness meter included.
- [Noise Gate & Audio Cleaner](https://loopaloo.com/tools/noise-gate): Remove background noise and unwanted silence with professional noise gate. Adjust threshold, attack, release, and range parameters. Includes presets for voice, music, and aggressive gating.
- [Audio Speed Changer](https://loopaloo.com/tools/audio-speed-adjuster): Speed up or slow down audio playback from 0.25x to 4x without changing pitch. Perfect for transcription, music practice, podcast speed adjustment, and audiobook listening.
- [Audio Pitch Shifter](https://loopaloo.com/tools/pitch-shifter): Shift audio pitch up or down by semitones with musical interval names (octave, perfect fifth, major third). Fine-tune with cents adjustment. Option to preserve original duration using granular synthesis.
- [Audio Equalizer (10-Band)](https://loopaloo.com/tools/equalizer): Professional 10-band parametric equalizer from 32Hz to 16kHz. Includes presets for bass boost, treble boost, vocal, rock, pop, jazz, and classical. Real-time adjustment with live preview.
- [Reverb Effect Generator](https://loopaloo.com/tools/reverb-generator): Add professional reverb effects with 9 presets: Small Room, Hall, Cathedral, Canyon, Bathroom, Plate, Spring, and Studio. Adjust pre-delay, decay, wet/dry mix, and frequency damping.
- [Audio Fade In/Out Creator](https://loopaloo.com/tools/audio-fade): Create smooth fade-in and fade-out transitions with multiple curve types: linear, exponential, logarithmic, S-curve, and ease-in-out. Adjustable duration and visual envelope preview.
- [Voice Changer & Effects](https://loopaloo.com/tools/voice-changer): Transform voices with 9 effects: Chipmunk, Deep Voice, Robotic, Alien, Echo, Telephone, Monster, Whisper, and Helium. Includes pitch shift, filters, distortion, and modulation controls.
- [Online Metronome](https://loopaloo.com/tools/metronome): Free online metronome with BPM range 20-300, tap tempo, time signatures (2/4 to 12/8), accent patterns, and multiple click sounds. Visual beat indicator included.
- [Audio Spectrum Analyzer](https://loopaloo.com/tools/audio-frequency-visualizer): Real-time audio frequency spectrum analyzer and visualizer. View frequency bars, waveform, and spectral display. Supports microphone input and file playback with multiple color themes.
- [Online Audio Recorder](https://loopaloo.com/tools/audio-recorder): Record audio from microphone directly in browser. Real-time waveform visualization, pause/resume, and export to multiple formats (MP3, WAV, OGG). No software installation required.
- [Silence Detector & Remover](https://loopaloo.com/tools/silence-detector): Automatically detect and mark silent sections in audio files. Visual waveform with highlighted silence regions. Remove all silences at once or export individual segments.
- [Text to Speech](https://loopaloo.com/tools/text-to-speech): Convert text to speech using browser Web Speech API. Choose from multiple voices, adjust speed and pitch, and play audio directly.
- [Audio Waveform Generator](https://loopaloo.com/tools/audio-waveform-generator): Generate beautiful waveform visualizations from audio files. Choose from bars, mirror, line, or circular styles. Customize colors and export as PNG.
- [Tone Generator](https://loopaloo.com/tools/tone-generator): Generate pure audio tones with sine, square, sawtooth, and triangle waveforms. Create multiple oscillators, binaural beats, and export as WAV.
- [BPM Detector](https://loopaloo.com/tools/bpm-detector): Detect the tempo (BPM) of any audio file. Includes tap tempo feature and genre reference guide.
- [Ringtone Maker](https://loopaloo.com/tools/ringtone-maker): Create custom ringtones from any audio file. Select portion, add fade effects, export for iPhone (.m4r) or Android (.mp3).
- [Vocal Remover / Karaoke Maker](https://loopaloo.com/tools/vocal-remover): Remove or isolate vocals from songs using phase cancellation. Create karaoke tracks, extract vocals, or isolate center-panned content. Works best with stereo professionally mixed tracks.

### Video Processing

- [Video Trimmer - Cut & Clip Videos Online](https://loopaloo.com/tools/video-trimmer): Trim and cut videos precisely with frame-by-frame scrubbing. Set start/end points visually, preview clips in real-time, and export trimmed videos instantly. No upload required - runs 100% in browser.
- [Video Format Converter - MP4, WebM, MOV, AVI, MKV](https://loopaloo.com/tools/video-format-converter): Convert videos between MP4, WebM, OGG, MOV, AVI, and MKV formats. Device presets for YouTube, Instagram, TikTok, iPhone, Android. Quality options from fast to high quality encoding.
- [Video Merger - Combine & Join Multiple Videos](https://loopaloo.com/tools/video-merger): Merge multiple video clips into one seamless video. Drag-and-drop reordering, preview before export, timeline visualization. Combine videos in any format with automatic re-encoding.
- [Video Speed Controller - Speed Up or Slow Down Videos](https://loopaloo.com/tools/video-speed-controller): Change video playback speed from 0.25x to 4x. Create slow motion effects, time-lapse videos, or speed ramps. Audio pitch preserved automatically with intelligent adjustment.
- [Video Compressor - Reduce Video File Size Online](https://loopaloo.com/tools/video-compressor): Compress videos up to 90% smaller without visible quality loss. Multiple quality presets, resolution scaling, and bitrate control. Perfect for email, social media, and web uploads.
- [Video Thumbnail Extractor - Extract Frames as Images](https://loopaloo.com/tools/video-thumbnail-extractor): Extract perfect thumbnails from any video. Auto-extract key frames or manual frame-by-frame selection. Export as JPEG, PNG, or WebP. Ideal for YouTube thumbnails and preview images.
- [Video to GIF Converter - Create Animated GIFs Online](https://loopaloo.com/tools/video-to-gif): Convert any video clip to high-quality animated GIF. Control frame rate, duration, and dimensions. Palette optimization for smaller file sizes. Perfect for memes, reactions, and social sharing.
- [Video Cropper - Crop & Resize Video Dimensions](https://loopaloo.com/tools/video-cropper): Crop videos to any aspect ratio. Platform presets for Instagram (1:1, 9:16), YouTube (16:9), TikTok. Interactive crop area with rule of thirds grid. Real-time preview while cropping.
- [Video Rotation Tool - Rotate & Flip Videos Online](https://loopaloo.com/tools/video-rotation): Rotate videos 90°, 180°, 270° or flip horizontally/vertically. Fix sideways videos, create mirror effects. Quick presets for portrait-to-landscape and selfie mirror fix.
- [Video Watermark Adder - Add Text or Logo to Videos](https://loopaloo.com/tools/video-watermark): Add custom text watermarks or image logos to videos. 9 position grid placement, adjustable opacity and size. Protect your content with branded watermarks. Drag-and-drop positioning.
- [Video Reverser - Play Video Backwards Online](https://loopaloo.com/tools/video-reverser): Reverse any video to play from end to start. Option to reverse audio too or mute. Create unique visual effects, boomerang videos, and creative content. Instant preview.
- [Video Frame Rate Converter - Change FPS Online](https://loopaloo.com/tools/video-frame-rate-converter): Convert video frame rate: 24fps (cinematic), 30fps (standard), 60fps (smooth gaming), 120fps (slow motion). Use-case presets for film, YouTube, gaming, and smooth motion interpolation.
- [Video Loop Creator - Repeat Videos Seamlessly](https://loopaloo.com/tools/video-loop-creator): Create looping videos that repeat multiple times. Perfect for Instagram Stories, TikTok, background videos, and cinemagraphs. Set loop count (3x, 5x, 10x, 20x) with seamless joins.
- [Video to Audio Extractor - Extract MP3 from Video](https://loopaloo.com/tools/video-to-audio-extractor): Extract audio track from any video as MP3, WAV, AAC, OGG, or M4A. Quality presets from 128kbps to lossless. Perfect for podcasts, music extraction, and audio-only content.
- [Video Quality Adjuster - Change Resolution & Bitrate](https://loopaloo.com/tools/video-quality-adjuster): Adjust video quality with resolution scaling (360p to 1440p) and bitrate control. Use-case presets for mobile, web, archive, and email. Real-time file size estimation.
- [Green Screen Remover - Chroma Key Online](https://loopaloo.com/tools/green-screen-remover): Remove green screen backgrounds with professional chroma key. Adjustable color picker, similarity threshold, and edge blending. Export with transparency (MOV with alpha channel).
- [Video Subtitle Burner - Hardcode Subtitles](https://loopaloo.com/tools/video-subtitle-burner): Burn subtitles permanently into video (hardcode). Support for SRT and VTT files. Customize font size and position (top/center/bottom). Perfect for social media where CC may not work.
- [Screen Recorder - Record Screen & Webcam Online](https://loopaloo.com/tools/screen-recorder): Record your screen, webcam, or both with system audio and microphone. No software install required - runs in browser. Choose recording area: full screen, window, or browser tab.
- [Video Mute / Audio Remover](https://loopaloo.com/tools/video-mute): Remove or mute audio from video files. Create silent videos for social media, adjust volume levels, or completely strip the audio track. No uploads - 100% browser-based.

### Document & Text

- [Text Case Converter](https://loopaloo.com/tools/text-case-converter): Convert text between 12 cases: UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Sentence, and Alternating
- [Word Counter & Text Analyzer](https://loopaloo.com/tools/word-counter): Count words, characters, paragraphs, sentences with reading time, speaking time, readability scores (Flesch, Gunning Fog), and word frequency analysis
- [Text Diff & Compare Tool](https://loopaloo.com/tools/text-diff): Compare texts with side-by-side and unified diff views, line-by-line or character-level comparison, change statistics, and export to patch file
- [JSON Formatter & Validator](https://loopaloo.com/tools/json-formatter): Format, validate, minify JSON with JSONPath queries, tree view explorer, schema validation, diff comparison, and sort keys. Multiple indent styles
- [Markdown Editor & Preview](https://loopaloo.com/tools/markdown-preview): Full-featured Markdown editor with live preview, GitHub Flavored Markdown, syntax highlighting, table of contents, export to HTML/PDF, and multiple themes
- [Lorem Ipsum & Placeholder Generator](https://loopaloo.com/tools/lorem-ipsum): Generate placeholder text in 8 styles: Classic Lorem, Hipster, Corporate, Pirate, Bacon, Zombie, Space, and Custom vocabulary with words/sentences/paragraphs
- [Code Minifier & Beautifier](https://loopaloo.com/tools/code-minifier): Minify or beautify code in 7 languages: JavaScript, TypeScript, CSS, HTML, JSON, XML, SQL with compression visualization
- [Regex Tester & Debugger](https://loopaloo.com/tools/regex-tester): Test regex patterns with live matching, capture groups, flags (g/i/m/s/u), pattern library with common expressions, find & replace, and detailed match breakdown
- [XML Formatter & Tools](https://loopaloo.com/tools/xml-formatter): Format, validate XML with XPath queries, interactive tree view, XML-to-JSON conversion, and multiple color themes
- [HTML ↔ Markdown Converter](https://loopaloo.com/tools/html-to-markdown): Bidirectional HTML and Markdown converter with GitHub Flavored Markdown, tables, live preview, and customizable output styles
- [Code Syntax Highlighter](https://loopaloo.com/tools/code-highlighter): Add syntax highlighting to code in 22 languages with 7 color themes, line numbers, and export to HTML
- [Text Encryption & Encoding](https://loopaloo.com/tools/text-encryption): Encrypt text with 12 methods: Caesar, Vigenère, XOR, Atbash, ROT13, Base64, Morse, Binary, Hex, Affine, Rail Fence ciphers
- [Haiku Generator](https://loopaloo.com/tools/haiku-generator): Generate haiku poems with 10 themes: Nature, Zen, Ocean, Love, Technology, Space. Save favorites, custom words, export as image
- [Text Statistics Analyzer](https://loopaloo.com/tools/text-statistics): Analyze text complexity, readability, and detailed statistics
- [YAML Formatter & Converter](https://loopaloo.com/tools/yaml-formatter): Format, validate, and convert between YAML and JSON formats. Live validation, syntax highlighting, and bidirectional conversion.
- [Markdown Table Generator](https://loopaloo.com/tools/markdown-table-generator): Create Markdown tables with a visual editor. Add columns, rows, set alignment, and export perfectly formatted tables.
- [XPath Tester](https://loopaloo.com/tools/xpath-tester): Test and debug XPath expressions against XML documents. See matched nodes, values, and counts in real-time.
- [SQL Formatter](https://loopaloo.com/tools/sql-formatter): Format and beautify SQL queries with syntax highlighting. Supports multiple dialects and customizable formatting options.
- [JSON Schema Generator](https://loopaloo.com/tools/json-schema-generator): Generate JSON Schema from JSON data automatically. Infers types, formats (email, date, URI), required fields, nested objects, and arrays. Supports Draft-07 and 2020-12.
- [Printable Paper Generator](https://loopaloo.com/tools/printable-paper-generator): Generate custom printable paper templates: dot grid, graph paper, lined, isometric, Cornell notes, music staff, and hexagonal grid. Export as PDF or PNG.

### PDF Tools

- [PDF Merger](https://loopaloo.com/tools/pdf-merger): Combine multiple PDF files into one document
- [PDF Splitter](https://loopaloo.com/tools/pdf-splitter): Split a PDF into individual page files
- [PDF Page Remover](https://loopaloo.com/tools/pdf-page-remover): Remove specific pages from a PDF document
- [PDF Page Reorder](https://loopaloo.com/tools/pdf-page-reorder): Reorder pages in a PDF by dragging and dropping
- [PDF Rotator](https://loopaloo.com/tools/pdf-rotator): Rotate individual pages or all pages in a PDF
- [PDF Compressor](https://loopaloo.com/tools/pdf-compressor): Reduce PDF file size with quality control
- [PDF Image Extractor](https://loopaloo.com/tools/pdf-image-extractor): Extract embedded images (photos, logos) from PDF
- [PDF to Images](https://loopaloo.com/tools/pdf-to-images): Render each PDF page as a PNG or JPG image
- [PDF Text Extractor](https://loopaloo.com/tools/pdf-text-extractor): Extract all text content from a PDF document
- [PDF Watermark Adder](https://loopaloo.com/tools/pdf-watermark-adder): Add text watermarks to protect your PDFs
- [PDF Cropper](https://loopaloo.com/tools/pdf-cropper): Crop PDF page margins to remove whitespace
- [PDF Header/Footer Adder](https://loopaloo.com/tools/pdf-header-footer-adder): Add custom headers and footers with page numbers
- [PDF to Booklet](https://loopaloo.com/tools/pdf-to-booklet): Arrange PDF pages for booklet printing
- [PDF Annotation Viewer](https://loopaloo.com/tools/pdf-annotation-viewer): View and export comments and annotations
- [Images to PDF](https://loopaloo.com/tools/images-to-pdf): Convert multiple images into a single PDF document. Drag and drop to reorder pages, customize page size, orientation, and margins.
- [PDF Password Protector](https://loopaloo.com/tools/pdf-password-protector): Encrypt and password-protect your PDF documents. Set user and owner passwords, control printing, copying, and editing permissions with 128-bit AES encryption.
- [PDF Signature Tool](https://loopaloo.com/tools/pdf-signature-tool): Add your signature to PDF documents. Draw, type, or upload your signature, then position it anywhere on the page. Perfect for contracts, agreements, and official documents.

### CSV & Data Analysis

- [CSV Viewer & Editor](https://loopaloo.com/tools/csv-viewer): View and edit CSV files in a spreadsheet-like interface
- [CSV to JSON Converter](https://loopaloo.com/tools/csv-to-json): Convert between CSV and JSON formats
- [CSV Formatter & Validator](https://loopaloo.com/tools/csv-formatter): Pretty-print, validate, and clean up CSV files
- [CSV Statistics Generator](https://loopaloo.com/tools/csv-statistics): Calculate min, max, average, median, and more for CSV data
- [CSV to Excel Converter](https://loopaloo.com/tools/csv-to-excel): Export CSV files as Excel (XLSX/XLS) format
- [CSV Splitter](https://loopaloo.com/tools/csv-splitter): Split large CSV files into smaller chunks by row count
- [CSV Merger](https://loopaloo.com/tools/csv-merger): Combine multiple CSV files into one
- [CSV Column Filter](https://loopaloo.com/tools/csv-column-filter): Filter and select specific columns from CSV files
- [CSV Row Filter](https://loopaloo.com/tools/csv-row-filter): Filter rows based on custom criteria and conditions
- [CSV Duplicate Remover](https://loopaloo.com/tools/csv-duplicate-remover): Identify and remove duplicate rows from CSV files
- [CSV Sorter](https://loopaloo.com/tools/csv-sorter): Sort CSV data by multiple columns with custom ordering
- [CSV Data Type Detector](https://loopaloo.com/tools/csv-data-type-detector): Automatically identify column data types
- [CSV Missing Data Analyzer](https://loopaloo.com/tools/csv-missing-data-analyzer): Find and report empty cells and missing values
- [CSV to SQL](https://loopaloo.com/tools/csv-to-sql): Generate SQL INSERT and CREATE TABLE statements
- [CSV Column Renamer](https://loopaloo.com/tools/csv-column-renamer): Rename CSV columns with live preview
- [CSV Data Validator](https://loopaloo.com/tools/csv-data-validator): Validate CSV data against custom rules
- [CSV Search & Replace](https://loopaloo.com/tools/csv-search-replace): Find and replace values with regex support
- [CSV Pivot Table Generator](https://loopaloo.com/tools/csv-pivot-table): Create pivot tables with 11 aggregation types including sum, count, avg, median, stddev, first, last, and concatenate
- [CSV Data Transformer](https://loopaloo.com/tools/csv-transformer): Transform CSV columns with 25+ operations: text manipulation (uppercase, lowercase, trim), number formatting, date conversion, extraction patterns, and custom pipelines
- [CSV File Comparator](https://loopaloo.com/tools/csv-comparator): Compare two CSV files side-by-side, find added/removed/modified rows, key-based or positional matching, highlight differences, and download comparison report

### Converters & Encoders

- [Base64 Encoder/Decoder](https://loopaloo.com/tools/base64-encoder-decoder): Encode and decode text or files to/from Base64
- [URL Encoder/Decoder](https://loopaloo.com/tools/url-encoder-decoder): URL encode or decode text for safe use in URLs
- [QR Code Generator](https://loopaloo.com/tools/qr-code-generator): Generate QR codes from text or URLs
- [Barcode Generator](https://loopaloo.com/tools/barcode-generator): Generate barcodes in CODE128, CODE39, EAN13, UPC formats
- [Color Converter](https://loopaloo.com/tools/color-converter): Convert between HEX, RGB, HSL, and CMYK color formats
- [Color Palette Generator](https://loopaloo.com/tools/color-palette-generator): Generate harmonious color schemes using color theory
- [Unit Converter](https://loopaloo.com/tools/unit-converter): Convert length, weight, temperature, and volume units
- [Number Base Converter](https://loopaloo.com/tools/number-base-converter): Convert numbers between binary, octal, decimal, and hexadecimal
- [Currency Converter](https://loopaloo.com/tools/currency-converter): Convert between 30+ world currencies with offline exchange rates
- [Timezone Converter](https://loopaloo.com/tools/timezone-converter): Convert time between different timezones worldwide
- [Hash Generator](https://loopaloo.com/tools/hash-generator): Generate MD5, SHA1, SHA256, SHA384, SHA512 hashes from text
- [UUID Generator](https://loopaloo.com/tools/uuid-generator): Generate random v4 UUIDs with multiple format options
- [Slug Generator](https://loopaloo.com/tools/slug-generator): Create URL-friendly slugs from text for SEO and clean URLs
- [Checksum Calculator](https://loopaloo.com/tools/checksum-calculator): Calculate file checksums and verify integrity (MD5, SHA-1, SHA-256)
- [JWT Decoder](https://loopaloo.com/tools/jwt-decoder): Decode and inspect JSON Web Tokens (JWT). View header, payload, claims, expiration status, and signature without needing the secret key
- [JWT Builder](https://loopaloo.com/tools/jwt-builder): Create and sign JSON Web Tokens (JWT) with custom claims. Support for HS256, HS384, HS512 HMAC algorithms
- [Unix Timestamp Converter](https://loopaloo.com/tools/unix-timestamp-converter): Convert between Unix/Epoch timestamps and human-readable dates. Supports seconds and milliseconds with timezone information
- [Font Converter](https://loopaloo.com/tools/font-converter): Convert fonts between TTF, OTF, WOFF, and WOFF2 formats. Preview fonts with custom text, view font details, and generate CSS @font-face code.
- [File Encryption](https://loopaloo.com/tools/file-encryption): Encrypt and decrypt files using AES encryption. Your data never leaves your browser for complete privacy.
- [Morse Code Translator](https://loopaloo.com/tools/morse-code-translator): Convert text to Morse code and back. Play audio of the Morse code with adjustable speed and tone.
- [NATO Phonetic Alphabet](https://loopaloo.com/tools/nato-phonetic-alphabet): Convert text to NATO phonetic alphabet (Alpha, Bravo, Charlie...) and back. Includes pronunciation guide and text-to-speech.
- [Punycode Converter](https://loopaloo.com/tools/punycode-converter): Convert internationalized domain names (IDN) between Unicode and Punycode ASCII encoding. Support for non-ASCII domains.

### Web Tools

- [SRI Hash Generator](https://loopaloo.com/tools/sri-hash-generator): Generate Subresource Integrity (SRI) hashes for scripts and stylesheets. Protect against CDN compromise and tampering
- [Subnet Calculator](https://loopaloo.com/tools/subnet-calculator): Calculate IPv4 and IPv6 subnet details including network address, broadcast, host range, netmask, and wildcard mask
- [What's My IP](https://loopaloo.com/tools/whats-my-ip): Find your public IP address, location, timezone, and ISP information instantly. Free, fast, and private IP lookup tool
- [HTTP Status Codes Reference](https://loopaloo.com/tools/http-status-codes): Complete HTTP status code reference with descriptions. Search all 1xx, 2xx, 3xx, 4xx, and 5xx status codes with explanations
- [User Agent Parser](https://loopaloo.com/tools/user-agent-parser): Parse and analyze user agent strings to extract browser, OS, device type, and rendering engine information
- [Password Generator](https://loopaloo.com/tools/password-generator): Generate ultra-secure passwords with presets (Simple to Paranoid), strength analysis, entropy calculation, crack time estimation, password history, and bulk generation
- [Password Strength Checker](https://loopaloo.com/tools/password-strength-checker): Analyze password security with 10 criteria checks, entropy calculation, crack time estimation, character breakdown, warnings, and improvement suggestions
- [Timer & Stopwatch](https://loopaloo.com/tools/timer-stopwatch): Dual-mode time tracker with stopwatch including lap times (fastest/slowest highlighting), countdown timer with presets, sound alerts, and browser notifications
- [Pomodoro Timer](https://loopaloo.com/tools/pomodoro-timer): Focus timer using Pomodoro technique with work/break sessions, circular progress, presets (Classic 25/5, Deep Work, 52/17), stats tracking, and auto-start options
- [CSS Gradient Generator](https://loopaloo.com/tools/gradient-generator): Create stunning CSS gradients with linear/radial/conic types, angle control, position control, multiple color stops, 11 presets, and reverse/randomize features
- [CSS Box Shadow Generator](https://loopaloo.com/tools/box-shadow-generator): Design complex box shadows with multi-layer support, inset shadows, visibility toggle, layer reordering, opacity control, and 12 professional presets
- [CSS Border Radius Generator](https://loopaloo.com/tools/border-radius-generator): Create custom border radius with individual corner control, linked/unlinked mode, px/% units, interactive corner sliders on preview, and 12 shape presets
- [CSS Button Generator](https://loopaloo.com/tools/css-button-generator): Design custom CSS buttons with text, background (solid/gradient), border, shadow, and hover effects controls. 12 presets including 3D, Neon, Ghost, and Pill styles
- [Color Picker](https://loopaloo.com/tools/color-picker): Professional color picker with saturation-brightness canvas, hue slider, HEX/RGB/HSL/HSB formats, saved colors palette, contrast calculation, and preset colors
- [Favicon Generator](https://loopaloo.com/tools/favicon-generator): Create favicons from text, emojis, or images with all device sizes (16x16 to 512x512), background/text color customization, border radius control, and batch download
- [Font Pairing Suggester](https://loopaloo.com/tools/font-pairing-suggester): Discover beautiful font combinations with 12 curated Google Fonts pairings, live preview, mood filters, usage tags, CSS import/variables export, and favorites
- [To-Do List](https://loopaloo.com/tools/todo-list): Organize tasks with priorities (low/medium/high), due dates, tags, smart filtering, search, sorting, stats dashboard, import/export, and local storage persistence
- [Checklist Creator](https://loopaloo.com/tools/checklist-creator): Create reusable checklists with nested items, 4 templates (Project Launch, Travel Packing, Weekly Review, Event Planning), progress tracking, and Markdown export
- [Zettelkasten Notes](https://loopaloo.com/tools/zettelkasten-notes): Build a personal knowledge base with [[bidirectional links]], tags, backlinks, search, note metadata, and import/export. Implements Zettelkasten method
- [URL Safety Analyzer](https://loopaloo.com/tools/url-safety-analyzer): Analyze any URL for phishing, suspicious patterns, and security risks. Detects login keywords, suspicious TLDs, encoded characters, brand impersonation, and more
- [Cron Expression Builder](https://loopaloo.com/tools/cron-expression-builder): Build and understand cron expressions with a visual interface. See next scheduled runs, use common presets, and generate cron syntax for scheduled tasks
- [Mock Data Generator](https://loopaloo.com/tools/mock-data-generator): Generate realistic fake data for testing and development. Create names, usernames, emails, addresses, phone numbers, and more. Export to JSON or CSV format
- [Certificate Decoder](https://loopaloo.com/tools/certificate-decoder): Decode and analyze PEM-encoded X.509 SSL/TLS certificates. View subject, issuer, validity, extensions, and fingerprints
- [CSR Generator](https://loopaloo.com/tools/csr-generator): Generate Certificate Signing Requests (CSR) for SSL/TLS certificates with RSA key pairs. Submit to CAs for certificate issuance
- [Self-Signed Certificate Generator](https://loopaloo.com/tools/self-signed-cert-generator): Generate self-signed SSL/TLS certificates for local development and testing. Includes Subject Alternative Names support
- [SSL Certificate Checker](https://loopaloo.com/tools/ssl-checker): Check if a website has valid SSL/TLS certificate. Verify HTTPS connection and get tools for detailed certificate analysis
- [SSH Key Generator](https://loopaloo.com/tools/ssh-key-generator): Generate secure SSH key pairs (Ed25519, RSA) for server authentication and Git. Creates public/private keys with fingerprints
- [CSP Builder](https://loopaloo.com/tools/csp-builder): Visual Content Security Policy builder. Create CSP headers to protect against XSS and code injection attacks
- [PEM/DER Converter](https://loopaloo.com/tools/pem-der-converter): Convert certificates and keys between PEM (Base64) and DER (binary) formats. Supports certificates, keys, and CSRs
- [.gitignore Generator](https://loopaloo.com/tools/gitignore-generator): Generate .gitignore files for any project. Pre-built templates for Node.js, Python, React, Java, Go, Rust, and 50+ more technologies.
- [HTML Entity Encoder/Decoder](https://loopaloo.com/tools/html-entity-encoder): Encode and decode HTML entities. Supports named entities (&), numeric (&), and hex (&) formats. Escape special characters for HTML.
- [CSS Animation Generator](https://loopaloo.com/tools/css-animation-generator): Create custom CSS keyframe animations visually. Add keyframes, adjust timing, and preview animations in real-time.
- [CSS Clip Path Generator](https://loopaloo.com/tools/clip-path-generator): Create custom CSS clip-path shapes visually. Drag points to customize polygons, circles, and complex shapes.
- [Glassmorphism Generator](https://loopaloo.com/tools/glassmorphism-generator): Create beautiful frosted glass CSS effects with customizable blur, transparency, and border settings.
- [Invoice Generator](https://loopaloo.com/tools/invoice-generator): Create professional invoices and download as PDF. Add items, taxes, discounts, and customizable details.
- [Robots.txt Generator](https://loopaloo.com/tools/robots-txt-generator): Create robots.txt files to control how search engines crawl your website. Support for multiple user-agents, allow/disallow rules, sitemaps, and crawl-delay.
- [Meta Tag Generator](https://loopaloo.com/tools/meta-tag-generator): Generate SEO meta tags, Open Graph, and Twitter Card tags for your website. Preview how your page appears in search results and social media.
- [Open Graph Preview](https://loopaloo.com/tools/open-graph-preview): Preview how your links will appear when shared on Facebook, Twitter, LinkedIn, Discord, Slack, WhatsApp, and iMessage.
- [CSS Flexbox & Grid Playground](https://loopaloo.com/tools/flexbox-grid-playground): Visual layout builder for CSS Flexbox and Grid. Toggle between modes, adjust properties interactively, use presets, and copy generated CSS code.

### Math & Science

- [Scientific Calculator](https://loopaloo.com/tools/calculator): Advanced calculator with scientific functions and history
- [Graphing Calculator](https://loopaloo.com/tools/graphing-calculator): Plot and visualize mathematical functions with multiple overlays
- [3D Graphing Calculator](https://loopaloo.com/tools/graphing-calculator-3d): Plot and visualize 3D mathematical functions and surfaces
- [Statistics Calculator](https://loopaloo.com/tools/statistics-calculator): Calculate mean, median, mode, standard deviation and more
- [Equation Solver](https://loopaloo.com/tools/equation-solver): Solve linear and quadratic equations with step-by-step solutions
- [Chemistry Calculator](https://loopaloo.com/tools/chemistry-calculator): Calculate molar mass, pH, and molarity for chemistry problems
- [Physics Calculator](https://loopaloo.com/tools/physics-calculator): Calculate force, energy, kinematics, and power in physics
- [Geometry Tool](https://loopaloo.com/tools/geometry-tool): Calculate area, perimeter, volume, and surface area of shapes
- [Finance Calculator](https://loopaloo.com/tools/finance-calculator): Calculate loans, mortgages, compound interest, and ROI
- [Time Calculator](https://loopaloo.com/tools/time-calculator): Add, subtract, and calculate time differences
- [Fraction Calculator](https://loopaloo.com/tools/fraction-calculator): Add, subtract, multiply, divide, and simplify fractions
- [Prime Number Checker](https://loopaloo.com/tools/prime-number-checker): Check if a number is prime and find prime factorization
- [Matrix Calculator](https://loopaloo.com/tools/matrix-calculator): Perform matrix operations including multiply, transpose, and inverse
- [Date & Age Calculator](https://loopaloo.com/tools/date-age-calculator): Calculate exact age in years, months, and days. Find date differences, countdowns, zodiac signs, and detailed time breakdowns
- [Aspect Ratio Calculator](https://loopaloo.com/tools/aspect-ratio-calculator): Calculate aspect ratios, resize dimensions while maintaining proportions. Common presets for video, photo, mobile screens, and social media
- [Tip Calculator](https://loopaloo.com/tools/tip-calculator): Calculate tips and split bills easily. Service quality presets, custom percentages, bill splitting, and rounding options.
- [BMI Calculator](https://loopaloo.com/tools/bmi-calculator): Calculate your Body Mass Index with metric or imperial units. Visual scale, health categories, ideal weight range, and health tips.
- [Percentage Calculator](https://loopaloo.com/tools/percentage-calculator): Calculate percentages, percentage changes, increases, decreases, and find original values. Multiple calculation modes with formulas.
- [Truth Table Generator](https://loopaloo.com/tools/truth-table-generator): Generate complete truth tables for boolean expressions. Supports AND, OR, NOT, XOR, NAND, NOR, IMPLIES, IFF with sub-expression evaluation and tautology detection.
- [GCD & LCM Calculator](https://loopaloo.com/tools/gcd-lcm-calculator): Calculate Greatest Common Divisor and Least Common Multiple of multiple numbers. Shows prime factorization and common divisors.

### Games

- [2048 Game](https://loopaloo.com/tools/2048): Slide numbered tiles to combine and reach 2048! Features touch/swipe support, undo functionality, and score tracking
- [Tic-Tac-Toe](https://loopaloo.com/tools/tic-tac-toe): Classic tic-tac-toe game with AI opponent using minimax algorithm. Three difficulty levels: Easy, Medium, Hard
- [Snake Game](https://loopaloo.com/tools/snake-game): Classic snake game with three speed levels, pause/resume, mobile D-pad controls, and high score tracking
- [Flappy Bird](https://loopaloo.com/tools/flappy-bird): Navigate through pipes in this side-scrolling game. Features animated bird, increasing difficulty, and high scores
- [Memory Match](https://loopaloo.com/tools/memory-match): Card matching memory game with 4 emoji themes (animals, food, sports, nature), 3 difficulty levels, and timer
- [Simon Says](https://loopaloo.com/tools/simon-says): Color pattern memory game with audio feedback. Repeat the sequence as it gets longer. Three speed settings
- [Hangman](https://loopaloo.com/tools/hangman): Word guessing game with 5 categories (animals, countries, food, technology, sports), SVG animation, and hints
- [Mastermind](https://loopaloo.com/tools/mastermind): Code-breaking puzzle game. Guess the secret color code with feedback pegs. Three difficulty levels
- [Sudoku](https://loopaloo.com/tools/sudoku): Sudoku puzzle generator and solver with auto-generated valid puzzles, hint system, and error highlighting
- [Minesweeper](https://loopaloo.com/tools/minesweeper): Classic minesweeper with right-click flagging, timer, first-click safety. Beginner, Intermediate, Expert modes
- [Breakout](https://loopaloo.com/tools/breakout): Ball and paddle brick breaker game. Break all bricks for points! Mouse/touch controls, colored brick rows
- [Whack-a-Mole](https://loopaloo.com/tools/whack-a-mole): Click-based reflex game. Whack moles for points, grab golden moles for bonus, avoid bombs! Combo system
- [Trivia Quiz](https://loopaloo.com/tools/trivia-quiz): Test your knowledge with trivia! 5 categories (science, history, geography, entertainment, sports), timer, streaks
- [Typing Speed Test](https://loopaloo.com/tools/typing-speed-test): Test your typing speed and accuracy with WPM tracking, accuracy measurement, high scores, and three difficulty levels
- [Blackjack](https://loopaloo.com/tools/blackjack): Casino blackjack card game. Hit, stand, or double down! 6-deck shoe, dealer stands on 17, blackjack pays 3:2
- [Dice Roller](https://loopaloo.com/tools/dice-roller): Roll virtual dice for tabletop games. Supports d4, d6, d8, d10, d12, d20, d100 with modifiers and history.
- [Wordle](https://loopaloo.com/tools/wordle): Guess the 5-letter word in 6 tries. Color-coded hints show correct, present, and absent letters. Track your stats and streaks.
- [Conway's Game of Life](https://loopaloo.com/tools/game-of-life): Classic cellular automaton simulation. Draw cells, load famous patterns (Glider, Pulsar, Gosper Gun), and watch complex behavior emerge from simple rules.
- [Tetris](https://loopaloo.com/tools/tetris): Classic block-stacking puzzle game. Rotate and place falling tetrominoes to clear lines. Level up for faster drops.