Compress photo online free without quality loss. Compress image — JPEG, PNG, WebP, reduce size in browser.
Click or drag and drop images
JPG, PNG, WebP · up to 20 files, max 10 MB each
Files are not uploaded to a server — processed in your browser
Comparison: before and after
Download format
A tool for compressing images right in the browser without uploading to a server.
Adjust quality with the slider — lower values mean stronger compression and smaller file size.
Download the result in JPEG, WebP, or PNG — each shows file size and savings percentage.
Use the before/after slider for visual comparison of compression quality.
PNG uses lossless compression, so the quality slider does not affect it.
Upload multiple files for batch processing — compress all and download as ZIP.
Compress Photos Online — Reduce File Size Without Losing Quality
Compress photos and images (JPEG, PNG, WebP) right in your browser — free and without registration. Reduce file sizes by 50–80% with no visible quality loss to speed up your website and save storage.
Why compress images
Images account for 40–60% of total page weight on most websites. Uncompressed photos slow loading times, increase bounce rates, and lower Google rankings (PageSpeed Insights counts image optimization as part of Core Web Vitals).
Proper compression can reduce image file size by 50–80% with no visible quality loss — one of the most effective ways to speed up a website.
Image formats
| Format | Compression | Transparency | Best for |
|---|---|---|---|
| JPEG / JPG | Lossy | No | Photos, backgrounds |
| PNG | Lossless | Yes (PNG-24) | Logos, screenshots, icons |
| WebP | Lossy + Lossless | Yes | Web, replacing JPEG/PNG |
| AVIF | Lossy + Lossless | Yes | Modern web, best compression |
| GIF | Lossless (256 colors) | Yes (1-bit) | Simple animations |
| SVG | Vector (XML) | Yes | Icons, logos, illustrations |
Lossy vs Lossless compression
Lossy compression removes data the human eye can't detect. JPEG at 80% quality is typically indistinguishable from the original but 3–5× smaller. Each re-save with lossy compression further degrades quality.
Lossless compression compresses data without removing any information. Lossless PNG optimization (zopfli, oxipng) can produce files 10–30% smaller than standard PNG without losing a single pixel.
Web optimization tips
- Use WebP — supported by all modern browsers, 25–35% better compression than JPEG at the same quality
- Resize before compressing — don't upload a 4000px photo where 800px will be displayed
- Lazy loading —
loading="lazy"attribute defers off-screen image loading - srcset attribute — serve different image sizes for different screen sizes and DPI
- CDN — serve images from a CDN close to your users
FAQ
What JPEG quality setting should I use?
75–85% is optimal for web. At 85%, images are nearly indistinguishable from originals. At 75%, the difference is minimal while file size is significantly smaller. Below 60%, compression artifacts become visible.
PNG or JPEG for UI screenshots?
PNG for screenshots, icons, and images with sharp edges and text. JPEG compresses these poorly and creates artifacts around text. For photographs, use JPEG or WebP.
Should I switch to AVIF?
Yes, if your audience uses modern browsers. AVIF compresses 20–50% better than WebP at the same quality. Supported in Chrome, Firefox, and Safari since 2023. Use <picture> with WebP and JPEG fallbacks.
See also: image format converter, watermark tool.
Useful articles
AI Photo Restoration: How to Restore Old and Damaged Photos
How the GFPGAN neural network restores old and damaged photos: technology, capabilities, step-by-step guide, and tips.
AI Photo Colorization: How Neural Networks Bring Old Photos to Life
How neural networks colorize black and white photos: DDColor technology, method comparison, practical tips, and step-by-step guide.