Compress Images Online
Browser-based image compressor for JPG and PNG files — works offline, has no file size limits, and keeps your files private.
| What is it | Browser-based image compressor for JPG and PNG files — works offline, has no file size limits, and keeps your files private. |
|---|---|
| Pricing | Free |
| Free tier | Yes |
| Platform | Web Application |
| Best for | Reducing image file sizes for faster website loading, Preparing images for email newsletters |
| Domain registered | 2021 |
Data updated Aug. 1, 2026
What does Compress Images Online do?
Compress Images Online is a browser-based tool that reduces the file size of JPG and PNG images directly in your web browser. It processes images locally on your device using open-source compression libraries, which means your files are never uploaded to any server. This approach makes the compression process fast and keeps your images completely private. You can compress an unlimited number of images with no restrictions on file size, and the tool works even when you're offline.
The tool uses compressorJS for JPG compression and UPNG.js for PNG compression, both open-source libraries. It offers adjustable quality settings, automatic resizing options, and the ability to convert images to WebP format. What sets Compress Images Online apart is its client-side processing model, which eliminates server delays, removes privacy concerns, and has zero carbon footprint since no external servers are involved.
This tool is particularly useful for website owners who need to optimize images for faster page loading, bloggers preparing images for publication, and social media managers who need to reduce file sizes while maintaining visual quality. It's also ideal for anyone working with sensitive images who wants to ensure complete privacy during the compression process.
Key features
What makes it stand outWho is Compress Images Online for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardCompressImage.io
- Unlimited image compression
- No file size limits
- 100% private
- Works offline
- Low carbon footprint
- Auto resize image
- WebP conversion
Trust & presence
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