Complete Directory

All 236+ Free Online Tools

Browse our complete collection of browser-based tools organized by category. Every tool processes your files entirely on your device - nothing is uploaded to any server. No accounts, no subscriptions, no limits.

Image Processing

39 tools

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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.

Barcode Reader & Scanner

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.

Chord Diagram Generator

Create chord diagrams for guitar, ukulele, and bass. Choose from chord library or build custom fingerings. Export as PNG or SVG.

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

Drawing Canvas & Whiteboard

Free online drawing canvas and whiteboard. Draw, sketch, and create with brushes, shapes, colors, undo/redo, and export to PNG or JPG.

GIF Maker - Create Animated GIFs from Images

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 Annotator

Annotate images with arrows, shapes, text, highlights, and blur regions. Perfect for screenshot markup, tutorials, and documentation.

Image Background Remover

Remove backgrounds from images with smart edge detection. Supports color picker, corner detection, and preset colors with adjustable tolerance.

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

Create beautiful photo collages with flexible grid layouts. Features customizable spacing, background colors, borders, and multiple arrangement options.

Image Color Grader

Professional color grading: adjust brightness, contrast, saturation, hue, shadows, highlights, and temperature. Create cinematic looks with color curves.

Image Color Palette Extractor

Extract dominant, vibrant, or muted colors from images. Generate color schemes with HEX, RGB, HSL values and export palettes for design projects.

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 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 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.

Image Edge Detector

Detect and highlight edges using Sobel, Canny, and other algorithms. Features threshold control, direction filters, and contour extraction.

Image Filters

Apply professional photo filters: blur, sharpen, grayscale, sepia, invert, vintage, and more. Features preset effects and custom adjustments for stunning results.

Image Format Converter

Convert images between PNG, JPG, WebP, AVIF, BMP formats. Features quality control, transparency support, and batch conversion for efficient workflow.

Image Histogram

Analyze color distribution with RGB, luminance, and individual channel histograms. Features exposure analysis, statistics, and comparison 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 Metadata Viewer

Read EXIF, IPTC, XMP metadata from images. View camera settings, GPS location, date taken, color profiles, and technical image properties.

Image Pixelator

Create pixelated effects with square, circle, diamond, or hexagon shapes. Features presets for retro gaming, mosaic art, and privacy blur effects.

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 Rotation & Flip

Rotate images to any angle and flip horizontally or vertically. Features precise degree control, 90° quick rotations, and straightening tools.

Image Text Extractor (OCR)

Extract text from images using advanced OCR. Supports 18+ languages, page segmentation modes, confidence scores, and multi-format export.

Image to ASCII Art

Convert images to ASCII text art with customizable character sets. Features width control, color/monochrome modes, and multiple character density options.

Image to Base64

Convert images to Base64 encoded strings for embedding in CSS, HTML, or JavaScript. Multiple output formats available.

Image to Icon Generator

Generate favicons and app icons in all required sizes. Supports iOS, Android, Windows, and web platforms with one-click preset generation.

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

Enlarge images up to 4x while preserving quality. Uses advanced interpolation algorithms (Bilinear, Bicubic, Lanczos) with optional sharpening.

Image Watermark

Add text or image watermarks to protect your photos. Features position control, opacity adjustment, tiled patterns, and batch processing for copyright protection.

Meme Generator

Create memes with customizable text overlays. Add multiple text layers, adjust fonts, colors, and positions.

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.

QR Code Reader & Scanner

Scan QR codes from images or using your camera. Supports URLs, WiFi, contacts, emails, phone numbers, and more. 100% offline - no data uploaded.

Screenshot Beautifier

Add beautiful backgrounds, shadows, and frames to screenshots. Perfect for presentations and social media.

Sprite Sheet Generator

Create sprite sheets from multiple images with JSON metadata, or slice existing sprite sheets into individual frames. Perfect for game development.

SVG Optimizer

Optimize and minify SVG files by removing unnecessary metadata, comments, and whitespace while preserving visual quality.

SVG to PNG/JPG

Convert SVG vector graphics to high-quality raster images (PNG, JPG, WebP) with custom scaling and background options.

Texture Generator

Generate seamless tileable textures using Perlin noise, Simplex noise, Voronoi cells, and FBM. Customize colors with gradient editor. Export at multiple resolutions.

Audio Processing

21 tools

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Audio Equalizer (10-Band)

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.

Audio Fade In/Out Creator

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.

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

Combine multiple audio files into one track. Drag and drop to reorder, merge MP3s, WAVs, and other formats. Create seamless audio compilations online.

Audio 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 Spectrum Analyzer

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.

Audio Speed Changer

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 Trimmer & Cutter

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 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.

Audio Waveform Generator

Generate beautiful waveform visualizations from audio files. Choose from bars, mirror, line, or circular styles. Customize colors and export as PNG.

BPM Detector

Detect the tempo (BPM) of any audio file. Includes tap tempo feature and genre reference guide.

Noise Gate & Audio Cleaner

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.

Online 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.

Online 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.

Reverb Effect 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.

Ringtone Maker

Create custom ringtones from any audio file. Select portion, add fade effects, export for iPhone (.m4r) or Android (.mp3).

Silence Detector & Remover

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

Convert text to speech using browser Web Speech API. Choose from multiple voices, adjust speed and pitch, and play audio directly.

Tone Generator

Generate pure audio tones with sine, square, sawtooth, and triangle waveforms. Create multiple oscillators, binaural beats, and export as WAV.

Vocal Remover / Karaoke Maker

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.

Voice Changer & Effects

Transform voices with 9 effects: Chipmunk, Deep Voice, Robotic, Alien, Echo, Telephone, Monster, Whisper, and Helium. Includes pitch shift, filters, distortion, and modulation controls.

Video Processing

19 tools

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Green Screen Remover - Chroma Key Online

Remove green screen backgrounds with professional chroma key. Adjustable color picker, similarity threshold, and edge blending. Export with transparency (MOV with alpha channel).

Screen Recorder - Record Screen & Webcam Online

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 Compressor - Reduce Video File Size Online

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 Cropper - Crop & Resize Video Dimensions

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 Format Converter - MP4, WebM, MOV, AVI, MKV

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 Frame Rate Converter - Change FPS Online

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

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 Merger - Combine & Join Multiple Videos

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 Mute / Audio Remover

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.

Video Quality Adjuster - Change Resolution & Bitrate

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.

Video Reverser - Play Video Backwards Online

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 Rotation Tool - Rotate & Flip Videos Online

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 Speed Controller - Speed Up or Slow Down Videos

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 Subtitle Burner - Hardcode Subtitles

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.

Video Thumbnail Extractor - Extract Frames as Images

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 Audio Extractor - Extract MP3 from Video

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 to GIF Converter - Create Animated GIFs Online

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 Trimmer - Cut & Clip Videos Online

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 Watermark Adder - Add Text or Logo to Videos

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.

Document & Text

20 tools

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Code Minifier & Beautifier

Minify or beautify code in 7 languages: JavaScript, TypeScript, CSS, HTML, JSON, XML, SQL with compression visualization

Code Syntax Highlighter

Add syntax highlighting to code in 22 languages with 7 color themes, line numbers, and export to HTML

Haiku Generator

Generate haiku poems with 10 themes: Nature, Zen, Ocean, Love, Technology, Space. Save favorites, custom words, export as image

HTML ↔ Markdown Converter

Bidirectional HTML and Markdown converter with GitHub Flavored Markdown, tables, live preview, and customizable output styles

JSON Formatter & Validator

Format, validate, minify JSON with JSONPath queries, tree view explorer, schema validation, diff comparison, and sort keys. Multiple indent styles

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.

Lorem Ipsum & Placeholder Generator

Generate placeholder text in 8 styles: Classic Lorem, Hipster, Corporate, Pirate, Bacon, Zombie, Space, and Custom vocabulary with words/sentences/paragraphs

Markdown Editor & Preview

Full-featured Markdown editor with live preview, GitHub Flavored Markdown, syntax highlighting, table of contents, export to HTML/PDF, and multiple themes

Markdown Table Generator

Create Markdown tables with a visual editor. Add columns, rows, set alignment, and export perfectly formatted tables.

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.

Regex Tester & Debugger

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

SQL Formatter

Format and beautify SQL queries with syntax highlighting. Supports multiple dialects and customizable formatting options.

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

Text Diff & Compare Tool

Compare texts with side-by-side and unified diff views, line-by-line or character-level comparison, change statistics, and export to patch file

Text Encryption & Encoding

Encrypt text with 12 methods: Caesar, Vigenère, XOR, Atbash, ROT13, Base64, Morse, Binary, Hex, Affine, Rail Fence ciphers

Text Statistics Analyzer

Analyze text complexity, readability, and detailed statistics

Word Counter & Text Analyzer

Count words, characters, paragraphs, sentences with reading time, speaking time, readability scores (Flesch, Gunning Fog), and word frequency analysis

XML Formatter & Tools

Format, validate XML with XPath queries, interactive tree view, XML-to-JSON conversion, and multiple color themes

XPath Tester

Test and debug XPath expressions against XML documents. See matched nodes, values, and counts in real-time.

YAML Formatter & Converter

Format, validate, and convert between YAML and JSON formats. Live validation, syntax highlighting, and bidirectional conversion.

PDF Tools

17 tools

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CSV & Data Analysis

20 tools

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CSV Column Filter

Filter and select specific columns from CSV files

CSV Column Renamer

Rename CSV columns with live preview

CSV Data Transformer

Transform CSV columns with 25+ operations: text manipulation (uppercase, lowercase, trim), number formatting, date conversion, extraction patterns, and custom pipelines

CSV Data Type Detector

Automatically identify column data types

CSV Data Validator

Validate CSV data against custom rules

CSV Duplicate Remover

Identify and remove duplicate rows from CSV files

CSV File Comparator

Compare two CSV files side-by-side, find added/removed/modified rows, key-based or positional matching, highlight differences, and download comparison report

CSV Formatter & Validator

Pretty-print, validate, and clean up CSV files

CSV Merger

Combine multiple CSV files into one

CSV Missing Data Analyzer

Find and report empty cells and missing values

CSV Pivot Table Generator

Create pivot tables with 11 aggregation types including sum, count, avg, median, stddev, first, last, and concatenate

CSV Row Filter

Filter rows based on custom criteria and conditions

CSV Search & Replace

Find and replace values with regex support

CSV Sorter

Sort CSV data by multiple columns with custom ordering

CSV Splitter

Split large CSV files into smaller chunks by row count

CSV Statistics Generator

Calculate min, max, average, median, and more for CSV data

CSV to Excel Converter

Export CSV files as Excel (XLSX/XLS) format

CSV to JSON Converter

Convert between CSV and JSON formats

CSV to SQL

Generate SQL INSERT and CREATE TABLE statements

CSV Viewer & Editor

View and edit CSV files in a spreadsheet-like interface

Converters & Encoders

22 tools

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Barcode Generator

Generate barcodes in CODE128, CODE39, EAN13, UPC formats

Base64 Encoder/Decoder

Encode and decode text or files to/from Base64

Checksum Calculator

Calculate file checksums and verify integrity (MD5, SHA-1, SHA-256)

Color Converter

Convert between HEX, RGB, HSL, and CMYK color formats

Color Palette Generator

Generate harmonious color schemes using color theory

Currency Converter

Convert between 30+ world currencies with offline exchange rates

File Encryption

Encrypt and decrypt files using AES encryption. Your data never leaves your browser for complete privacy.

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.

Hash Generator

Generate MD5, SHA1, SHA256, SHA384, SHA512 hashes from text

JWT Builder

Create and sign JSON Web Tokens (JWT) with custom claims. Support for HS256, HS384, HS512 HMAC algorithms

JWT Decoder

Decode and inspect JSON Web Tokens (JWT). View header, payload, claims, expiration status, and signature without needing the secret key

Morse Code Translator

Convert text to Morse code and back. Play audio of the Morse code with adjustable speed and tone.

NATO Phonetic Alphabet

Convert text to NATO phonetic alphabet (Alpha, Bravo, Charlie...) and back. Includes pronunciation guide and text-to-speech.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal

Punycode Converter

Convert internationalized domain names (IDN) between Unicode and Punycode ASCII encoding. Support for non-ASCII domains.

QR Code Generator

Generate QR codes from text or URLs

Slug Generator

Create URL-friendly slugs from text for SEO and clean URLs

Timezone Converter

Convert time between different timezones worldwide

Unit Converter

Convert length, weight, temperature, and volume units

Unix Timestamp Converter

Convert between Unix/Epoch timestamps and human-readable dates. Supports seconds and milliseconds with timezone information

URL Encoder/Decoder

URL encode or decode text for safe use in URLs

UUID Generator

Generate random v4 UUIDs with multiple format options

Web Tools

39 tools

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.gitignore Generator

Generate .gitignore files for any project. Pre-built templates for Node.js, Python, React, Java, Go, Rust, and 50+ more technologies.

Certificate Decoder

Decode and analyze PEM-encoded X.509 SSL/TLS certificates. View subject, issuer, validity, extensions, and fingerprints

Checklist Creator

Create reusable checklists with nested items, 4 templates (Project Launch, Travel Packing, Weekly Review, Event Planning), progress tracking, and Markdown export

Color Picker

Professional color picker with saturation-brightness canvas, hue slider, HEX/RGB/HSL/HSB formats, saved colors palette, contrast calculation, and preset colors

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

CSP Builder

Visual Content Security Policy builder. Create CSP headers to protect against XSS and code injection attacks

CSR Generator

Generate Certificate Signing Requests (CSR) for SSL/TLS certificates with RSA key pairs. Submit to CAs for certificate issuance

CSS Animation Generator

Create custom CSS keyframe animations visually. Add keyframes, adjust timing, and preview animations in real-time.

CSS 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 Box Shadow Generator

Design complex box shadows with multi-layer support, inset shadows, visibility toggle, layer reordering, opacity control, and 12 professional presets

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

CSS Clip Path Generator

Create custom CSS clip-path shapes visually. Drag points to customize polygons, circles, and complex shapes.

CSS Flexbox & Grid Playground

Visual layout builder for CSS Flexbox and Grid. Toggle between modes, adjust properties interactively, use presets, and copy generated CSS code.

CSS Gradient Generator

Create stunning CSS gradients with linear/radial/conic types, angle control, position control, multiple color stops, 11 presets, and reverse/randomize features

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

Discover beautiful font combinations with 12 curated Google Fonts pairings, live preview, mood filters, usage tags, CSS import/variables export, and favorites

Glassmorphism Generator

Create beautiful frosted glass CSS effects with customizable blur, transparency, and border settings.

HTML Entity Encoder/Decoder

Encode and decode HTML entities. Supports named entities (&), numeric (&), and hex (&) formats. Escape special characters for HTML.

HTTP Status Codes Reference

Complete HTTP status code reference with descriptions. Search all 1xx, 2xx, 3xx, 4xx, and 5xx status codes with explanations

Invoice Generator

Create professional invoices and download as PDF. Add items, taxes, discounts, and customizable details.

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.

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

Open Graph Preview

Preview how your links will appear when shared on Facebook, Twitter, LinkedIn, Discord, Slack, WhatsApp, and iMessage.

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

Analyze password security with 10 criteria checks, entropy calculation, crack time estimation, character breakdown, warnings, and improvement suggestions

PEM/DER Converter

Convert certificates and keys between PEM (Base64) and DER (binary) formats. Supports certificates, keys, and CSRs

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

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.

Self-Signed Certificate Generator

Generate self-signed SSL/TLS certificates for local development and testing. Includes Subject Alternative Names support

SRI Hash Generator

Generate Subresource Integrity (SRI) hashes for scripts and stylesheets. Protect against CDN compromise and tampering

SSH Key Generator

Generate secure SSH key pairs (Ed25519, RSA) for server authentication and Git. Creates public/private keys with fingerprints

SSL Certificate Checker

Check if a website has valid SSL/TLS certificate. Verify HTTPS connection and get tools for detailed certificate analysis

Subnet Calculator

Calculate IPv4 and IPv6 subnet details including network address, broadcast, host range, netmask, and wildcard mask

Timer & Stopwatch

Dual-mode time tracker with stopwatch including lap times (fastest/slowest highlighting), countdown timer with presets, sound alerts, and browser notifications

To-Do List

Organize tasks with priorities (low/medium/high), due dates, tags, smart filtering, search, sorting, stats dashboard, import/export, and local storage persistence

URL Safety Analyzer

Analyze any URL for phishing, suspicious patterns, and security risks. Detects login keywords, suspicious TLDs, encoded characters, brand impersonation, and more

User Agent Parser

Parse and analyze user agent strings to extract browser, OS, device type, and rendering engine information

What's My IP

Find your public IP address, location, timezone, and ISP information instantly. Free, fast, and private IP lookup tool

Zettelkasten Notes

Build a personal knowledge base with [[bidirectional links]], tags, backlinks, search, note metadata, and import/export. Implements Zettelkasten method

Math & Science

20 tools

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3D Graphing Calculator

Plot and visualize 3D mathematical functions and surfaces

Aspect Ratio Calculator

Calculate aspect ratios, resize dimensions while maintaining proportions. Common presets for video, photo, mobile screens, and social media

BMI Calculator

Calculate your Body Mass Index with metric or imperial units. Visual scale, health categories, ideal weight range, and health tips.

Chemistry Calculator

Calculate molar mass, pH, and molarity for chemistry problems

Date & Age Calculator

Calculate exact age in years, months, and days. Find date differences, countdowns, zodiac signs, and detailed time breakdowns

Equation Solver

Solve linear and quadratic equations with step-by-step solutions

Finance Calculator

Calculate loans, mortgages, compound interest, and ROI

Fraction Calculator

Add, subtract, multiply, divide, and simplify fractions

GCD & LCM Calculator

Calculate Greatest Common Divisor and Least Common Multiple of multiple numbers. Shows prime factorization and common divisors.

Geometry Tool

Calculate area, perimeter, volume, and surface area of shapes

Graphing Calculator

Plot and visualize mathematical functions with multiple overlays

Matrix Calculator

Perform matrix operations including multiply, transpose, and inverse

Percentage Calculator

Calculate percentages, percentage changes, increases, decreases, and find original values. Multiple calculation modes with formulas.

Physics Calculator

Calculate force, energy, kinematics, and power in physics

Prime Number Checker

Check if a number is prime and find prime factorization

Scientific Calculator

Advanced calculator with scientific functions and history

Statistics Calculator

Calculate mean, median, mode, standard deviation and more

Time Calculator

Add, subtract, and calculate time differences

Tip Calculator

Calculate tips and split bills easily. Service quality presets, custom percentages, bill splitting, and rounding options.

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.

Games

19 tools

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2048 Game

Slide numbered tiles to combine and reach 2048! Features touch/swipe support, undo functionality, and score tracking

Blackjack

Casino blackjack card game. Hit, stand, or double down! 6-deck shoe, dealer stands on 17, blackjack pays 3:2

Breakout

Ball and paddle brick breaker game. Break all bricks for points! Mouse/touch controls, colored brick rows

Conway's Game of Life

Classic cellular automaton simulation. Draw cells, load famous patterns (Glider, Pulsar, Gosper Gun), and watch complex behavior emerge from simple rules.

Dice Roller

Roll virtual dice for tabletop games. Supports d4, d6, d8, d10, d12, d20, d100 with modifiers and history.

Flappy Bird

Navigate through pipes in this side-scrolling game. Features animated bird, increasing difficulty, and high scores

Hangman

Word guessing game with 5 categories (animals, countries, food, technology, sports), SVG animation, and hints

Mastermind

Code-breaking puzzle game. Guess the secret color code with feedback pegs. Three difficulty levels

Memory Match

Card matching memory game with 4 emoji themes (animals, food, sports, nature), 3 difficulty levels, and timer

Minesweeper

Classic minesweeper with right-click flagging, timer, first-click safety. Beginner, Intermediate, Expert modes

Simon Says

Color pattern memory game with audio feedback. Repeat the sequence as it gets longer. Three speed settings

Snake Game

Classic snake game with three speed levels, pause/resume, mobile D-pad controls, and high score tracking

Sudoku

Sudoku puzzle generator and solver with auto-generated valid puzzles, hint system, and error highlighting

Tetris

Classic block-stacking puzzle game. Rotate and place falling tetrominoes to clear lines. Level up for faster drops.

Tic-Tac-Toe

Classic tic-tac-toe game with AI opponent using minimax algorithm. Three difficulty levels: Easy, Medium, Hard

Trivia Quiz

Test your knowledge with trivia! 5 categories (science, history, geography, entertainment, sports), timer, streaks

Typing Speed Test

Test your typing speed and accuracy with WPM tracking, accuracy measurement, high scores, and three difficulty levels

Whack-a-Mole

Click-based reflex game. Whack moles for points, grab golden moles for bonus, avoid bombs! Combo system

Wordle

Guess the 5-letter word in 6 tries. Color-coded hints show correct, present, and absent letters. Track your stats and streaks.