FreeImageToolkit
Image Compressor — Compress JPG, PNG & WebP Online
Our free image compressor reduces file sizes by up to 90% while maintaining visual quality. Upload multiple images at once, adjust the quality slider, and download all compressed files as a ZIP.
Why Compress Images?
- Faster websites — Smaller images load quicker
- Save storage — Reduce disk space usage
- Email friendly — Meet attachment size limits
- Better SEO — Page speed affects rankings
Batch Compression
Select multiple images at once or drag and drop a batch. All processing happens in your browser — your images never leave your device.
Need a file under a specific limit, like 50 KB or 100 KB, for an online form? Use Compress to KB, which finds the right quality automatically. Need to compress animated GIFs? Try our GIF Compressor that preserves animation.
How to Compress Images
- Drop JPG, PNG or WebP images into the upload area above. You can add many at once.
- Set the Quality slider. 70–80% gives big savings with no visible difference for most photos.
- Check the original and compressed size of every file.
- Download a single image, or all of them as one ZIP.
Recommended Settings
| Use case | Quality | Why |
|---|---|---|
| Website and blog images | 70–80% | Fast loading, quality loss not visible |
| Email attachments | 60–75% | Fits attachment size limits |
| Social media | 80–85% | Platforms re-compress anyway |
| Printing or archiving | 90–100% | Keep maximum detail |
Good to Know
Each image is compressed in its original format: a JPG stays JPG and a PNG stays PNG. Very large images are scaled down so the longest side is at most 4096 px, which is still more than enough for screens and the web.
For the biggest saving on a website, convert photos to WebP with the JPG to WebP converter. Read how to compress images without losing quality for more tips.
Frequently Asked Questions
How much can I reduce image size?
Typical photos shrink by 50–80% at 70–80% quality without visible change. Images that are already heavily compressed shrink less.
Does compressing an image reduce its quality?
Compression removes detail the eye is unlikely to notice. At 70% quality and above, most people cannot tell the difference in normal viewing.
Can I compress multiple images at once?
Yes. Add as many JPG, PNG and WebP files as you need and download them all as a ZIP.
Is there a file size limit?
There is no upload limit because nothing is uploaded. Very large images are scaled to at most 4096 px on the longest side during compression.
Are my images uploaded to a server?
No. Everything is processed locally in your browser. Your files never leave your device, so the tool is safe for private photos and confidential documents.
Learn More
Read our guides: How to Compress Images Without Losing Quality and Image Optimization for Web Performance.