Skip to main content
L
Loopaloo
Buy Us a Coffee
All ToolsImage ProcessingAudio ProcessingVideo ProcessingDocument & TextPDF ToolsCSV & Data AnalysisConverters & EncodersWeb ToolsMath & ScienceGames
Guides & BlogAboutContact
Buy Us a Coffee
L
Loopaloo

Free online tools for developers, designers, and content creators. All processing happens entirely in your browser - your files never leave your device. No uploads, no accounts, complete privacy.

support@loopaloo.com

Tool Categories

  • Image Tools
  • Audio Tools
  • Video Tools
  • Document & Text
  • PDF Tools
  • CSV & Data
  • Converters
  • Web Tools
  • Math & Science
  • Games

Company

  • About Us
  • Contact
  • Blog
  • FAQ

Legal

  • Privacy Policy
  • Terms of Service
  • Disclaimer

Support

Buy Us a Coffee

© 2026 Loopaloo. All rights reserved. Built with privacy in mind.

Privacy|Terms|Disclaimer
  1. Home
  2. Image Processing
  3. Image Compressor
Add to favorites

Loading tool...

You might also like

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.

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.

About Image Compressor

Large image files slow down websites, eat through mobile data, and bloat email attachments. This compressor reduces file sizes significantly — often by 50-80% — while keeping visual quality high. You control the quality-vs-size tradeoff with a simple slider, and a real-time preview lets you verify the result before downloading. Processing happens entirely in your browser, so your images stay private.

Quick Start Guide

  1. 1Upload an image (JPG, PNG, or WebP)
  2. 2Drag the quality slider to set your desired compression level
  3. 3Compare original and compressed versions side by side
  4. 4Check the resulting file size reduction
  5. 5Download the compressed image

Capabilities

  • Adjustable quality slider with real-time preview
  • Before/after comparison view
  • File size reduction percentage displayed
  • Supports JPG, PNG, and WebP
  • Batch compression for multiple images
  • Maintains EXIF data or strips it (your choice)
  • No file size limits

Who Uses This

  • Website performance

    Compress hero images, product photos, and thumbnails to speed up page loads and improve Core Web Vitals scores.

  • Email attachments

    Shrink photos to fit within email size limits without resorting to zip files or cloud links.

  • Storage savings

    Reduce the space your photo library uses on disk or cloud storage.

  • Mobile optimization

    Create lighter images that load fast on cellular connections.

Technical Details

For JPG files, compression works by adjusting the quantization step in the DCT (Discrete Cosine Transform) pipeline — higher compression means more aggressive rounding of frequency coefficients, which discards fine detail the eye is less sensitive to. For PNG, the tool optimizes the deflate compression and can reduce color depth where appropriate. WebP uses both lossy and lossless techniques depending on your quality setting. The before/after comparison shows exactly where quality trade-offs become visible, so you can find the sweet spot for each image.

Frequently Asked Questions

How much can file size be reduced?

It depends on the image and format, but 50-80% reduction is typical for JPGs at quality settings that still look great. PNGs may see smaller reductions since they are already lossless.

Is the compression lossy or lossless?

JPG compression is always lossy. PNG optimization is lossless. WebP supports both modes. The quality slider controls the lossy trade-off.

What quality setting should I use?

For most web images, 75-85% quality is a good balance. Below 60%, artifacts start becoming noticeable. Use the preview to judge for your specific image.

Can I compress images without visible quality loss?

Often yes, especially for JPGs saved at maximum quality. Reducing from 100% to 85% quality typically cuts file size in half with no perceptible difference.

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.