Free Image Compressor Online
Reduce JPG, PNG, and WebP image file sizes by up to 80% with no visible quality loss. Compression runs locally in your browser — images never leave your device. Free, no sign-up, drag-and-drop, and no watermark.
Drop images here or click to browse
JPG, PNG, WebP, AVIF — up to 25 files
Quick presets
Lower = smaller file
AVIF beats WebP by 20-50% but browser support is still emerging.
🔒 All processing happens in your browser. Your images never leave your device.
📦 EXIF metadata (camera info, GPS) is stripped automatically — useful for privacy.
How to compress an image
- Drag a JPG, PNG, or WebP file into the upload area, or click to browse files on your device.
- Set the compression quality. Most photos look identical at 80% quality but are 60-80% smaller.
- Optionally resize the image — most websites only need 1920px or 1280px wide images, not the full camera resolution.
- Download the optimized file. Use it on your website, in email attachments, or upload to social media.
Why compress images?
Faster page loads
Images are typically 60-70% of a webpage's weight. Halving their size makes the site feel twice as fast.
Better Google ranking
Core Web Vitals (LCP especially) reward fast image loading. Compressed images directly improve SEO.
Lower bandwidth bills
For sites with serious traffic, reducing image weight by 70% can save thousands per year in CDN costs.
Email and chat limits
Gmail caps attachments at 25 MB, WhatsApp at 100 MB. Compress before sending high-resolution photos.
Which format should I use?
| Format | Best for | Transparency |
|---|---|---|
| JPG / JPEG | Photos, complex images | No |
| PNG | Logos, icons, screenshots | Yes |
| WebP | Modern web (smallest size) | Yes |
| AVIF | Cutting-edge web (even smaller) | Yes |
Frequently asked questions
Is image compression lossy or lossless?
JPG and WebP are lossy by design — the encoder discards information the human eye is unlikely to notice. PNG is lossless. This tool uses smart lossy compression for JPG/WebP and lossless optimization for PNG.
Will the compressed image look worse?
At typical compression levels (70-85% quality) the difference is invisible to the eye but file size drops by 60-80%. Very aggressive settings (under 50%) start to show JPG artifacts around sharp edges.
Are my images uploaded to a server?
No. Compression runs locally in your browser using the Canvas API. Your photos never leave your device, which is essential for private, client, or NSFW content.
What is a good file size for a website image?
For full-width hero images, target 150-300 KB. For inline content images, 50-150 KB is ideal. Thumbnails should be under 30 KB. Anything above 500 KB will hurt Core Web Vitals and Lighthouse scores.
What is the difference between JPG, PNG and WebP?
JPG is best for photos (lossy, no transparency). PNG is best for logos, icons, and graphics with transparency (lossless). WebP combines the strengths of both — smaller than JPG at the same quality, supports transparency like PNG, and is supported in all modern browsers.
Other free tools
Compress JPEG, PNG, and WebP images by 50-80% without visible quality loss — all in your browser. Side-by-side preview, batch support, customisable quality.
How to use
- 1Drop your images (multiple at once supported).
- 2Set target quality (75-90% is the sweet spot).
- 3Preview compressed vs original side-by-side.
- 4Download individually or as a ZIP.
Why use this tool
- Local processing — large files never upload to a server.
- Batch mode for compressing 50+ images at once.
- Quality preview before downloading.
Real-world examples
Website hero image
5 MB JPEG → 800 KB at 85% quality, no visible difference. Page loads 3× faster on mobile.
Email attachment
20 photos → batch compress to ~80% smaller → email goes through without size errors.