About Image Compression
Reduce image file sizes while maintaining visual quality. Perfect for optimizing images for web, email, or storage. All compression happens locally in your browser - your images never leave your device.
Features
- Compress JPG, PNG, WebP, and other image formats
- Adjustable quality slider (10-100%)
- Convert to JPG or WebP during compression
- Real-time file size comparison
- Visual before/after preview
- Percentage reduction display
- 100% browser-based (no uploads)
- Instant processing
How Image Compression Works
Image compression reduces file size by removing redundant data or using more efficient encoding. There are two types:
- Lossy Compression: Removes some image data to achieve smaller sizes (JPG, WebP). Quality setting controls how much data is removed.
- Lossless Compression: Reduces file size without losing any image data (PNG). No quality loss but less compression.
When to Compress Images
- Website Optimization: Faster page load times improve SEO and user experience
- Email Attachments: Stay under size limits and send faster
- Social Media: Upload faster and meet platform requirements
- Storage: Save disk space on your device or cloud storage
- Mobile Apps: Reduce app size and bandwidth usage
- Presentations: Keep file sizes manageable
Quality Guidelines
- 90-100%: Near-original quality, minimal compression. Use for print or archival.
- 80-90%: High quality, good compression. Ideal for most uses.
- 70-80%: Good quality, better compression. Great for web images.
- 60-70%: Acceptable quality, high compression. Suitable for thumbnails or social media.
- Below 60%: Noticeable quality loss. Only for very small images or when size is critical.
JPG vs WebP Compression
WebP is a modern image format developed by Google that provides superior compression compared to JPG. At the same quality level, WebP images are typically 25-35% smaller than JPG. WebP also supports transparency (like PNG) and animation (like GIF).
Browser Support: WebP is supported in all modern browsers including Chrome, Firefox, Edge, Safari (14+), and Opera.
Best Practices
- Start with high-quality source images for best results
- Test different quality settings to find the right balance
- Use WebP for web when browser support allows
- Compress images before uploading to websites or social media
- Keep original files as backups before compressing
- Consider your use case when choosing quality level
- Batch compress multiple images with the same settings
Privacy & Security
All image compression happens entirely in your browser using HTML5 Canvas API. Your images are never uploaded to any server, ensuring complete privacy and security. The compression is instant and works offline once the page is loaded.