Free Image Compressor & Converter - Compress JPG, PNG, WebP, AVIF Online

Compress and convert images 100% locally in your browser. Free, fast, and private. Reduce image file sizes by up to 70% without quality loss. No upload required - your images never leave your device.

Configure & Upload Images

Adjust compression settings and drop your images for instant processing. Choose output format (WebP, JPEG, PNG, AVIF), set quality level, and optionally resize images.

Supported Formats

  • Input: JPEG, PNG, WebP, AVIF, GIF, SVG
  • Output: JPEG, PNG, WebP, AVIF

Key Features

  • 100% browser-based - no file uploads to any server
  • Batch processing - compress multiple images at once
  • Format conversion - convert between JPEG, PNG, WebP, and AVIF
  • Quality control - fine-tune compression from 1-100%
  • Image resizing - scale images with aspect ratio preservation
  • Metadata stripping - remove EXIF data for privacy
  • ZIP download - batch download all compressed images
  • Side-by-side preview - compare original and compressed images

Why Choose Our Image Compressor?

Unlike other image compression tools that upload your files to remote servers, our tool processes everything directly in your browser. This means complete privacy, instant results, and no file size limits.

Privacy First

Your images never leave your device. All compression and conversion happens locally using advanced Web APIs and WebAssembly technology. We cannot see, access, or store your images.

Professional Results

Our compression engine uses the same algorithms found in professional image editing software. Achieve up to 70% file size reduction with minimal visible quality loss.

Free Forever

No subscription fees, no usage limits, no account required. Compress unlimited images for free, whether for personal or commercial use.

How It Works

  1. Choose Settings: Select output format (WebP, JPEG, PNG, AVIF), quality level, and resize options
  2. Upload Images: Drag and drop or click to select images from your device
  3. Process Locally: Images are compressed in your browser using WebAssembly - no uploads
  4. Download Results: Download individually or as a ZIP archive

Learn more about how browser-based image compression works

Image Format Guide

Not sure which format to use? Here's a quick overview:

  • WebP: Best for most web images. 25-35% smaller than JPEG with 95%+ browser support.
  • AVIF: Maximum compression. 50% smaller than JPEG but 70% browser support.
  • JPEG: Universal compatibility for photographs and complex images.
  • PNG: Best for graphics, logos, and images requiring transparency.

Read the complete image formats comparison guide