Image Compressor
Compress JPG, PNG and WebP images right in your browser. Adjust quality with a live side-by-side preview and see the exact size reduction before you download.
Drop your image here
Drag & drop or click to browse. Supports JPG, PNG, WebP, GIF, BMP.
Choose ImageFree Image Compressor — Live Preview, Accurate Size
Reduce the file size of your images in seconds without leaving your browser. Upload a JPG, PNG, or WebP, drag the quality slider to see a real-time side-by-side comparison, and download when you're happy with the result. No server, no account, no watermarks.
👁️ Live Preview
Side-by-side original vs compressed view updates instantly as you move the quality slider.
📏 Accurate Sizes
File size is calculated from the real binary output — not an estimate from the base64 string length.
🎛️ Format Choice
Output as JPEG for maximum compatibility or WebP for even smaller files in modern browsers.
🔒 Private
Your image never leaves your device. All processing is done locally using the HTML5 Canvas API.
How to Compress an Image
- Click Choose Image or drag and drop your image onto the upload zone.
- A side-by-side preview appears showing the original and compressed versions.
- Drag the Quality slider left to compress more, right to keep higher quality.
- Optionally switch the output format between JPEG and WebP.
- Check the size stats, then click Download Compressed Image.
Frequently Asked Questions
At quality 70–80% the difference is usually invisible to the naked eye and the file is 40–60% smaller. Below 50% artefacts become noticeable. The live preview lets you judge for yourself.
No. Everything is processed locally using the HTML5 Canvas API. Your image never leaves your device.
Input: JPG, PNG, WebP, GIF, BMP. Output: JPEG or WebP (your choice). PNG output is not offered because it is lossless and cannot be further compressed this way.
PNG is a lossless format, often producing large files. Converting to JPEG or WebP applies lossy compression, which typically yields much smaller files.
WebP is a modern image format developed by Google. It typically produces files 25–35% smaller than JPEG at the same visual quality. Use it for websites — all modern browsers support it.
There is no hard limit. Very large images (e.g. 50 MP+ photos) may be slow to process on low-end devices due to browser memory constraints.