Image Compressor
Reduce image file size without losing quality. Supports JPEG, PNG, and WebP. Everything runs in your browser — 100% private, no server upload.
Quality Guide
| Quality | Use Case | Typical Size Reduction |
|---|---|---|
| 90-100% | Photography, print | 10-30% |
| 75-85% | Web images, product photos | 50-70% |
| 60-74% | Blog posts, social media | 70-80% |
| Below 60% | Thumbnails, previews | 80-90% |
Frequently Asked Questions
No. All compression happens locally in your browser using the HTML5 Canvas API. Your images never leave your device. This tool works completely offline after the page has loaded.
PNG uses lossless compression — it can't reduce quality to save space. Converting a PNG to JPEG or WebP at 80% quality can reduce its size by 60-80% with minimal visible difference. Select JPEG or WebP as the output format for best results on PNG inputs.
For most web use, 70-80% is the sweet spot — files are 50-70% smaller and visually indistinguishable from 100%. Google PageSpeed Insights recommends serving images at 85% quality or below for performance guidelines.
WebP is 25-35% smaller than JPEG at the same visual quality and supports transparency like PNG. It's supported in all modern browsers. Use WebP for new projects; JPEG for maximum compatibility with older systems.