Image Compressor
Image Compressor shrinks the file size of a photo by lowering its quality setting, in your browser and free, without uploading it. You move a quality slider, watch the before and after sizes, and download the smaller file when you are happy with it.
Last updated: 30 October 2026 · Free · No signup
Large photos cause real problems: they fail form uploads, they take a long time to send, and they slow down web pages. Compression is the fix, because most photos contain far more detail than a screen or a form actually needs. The trick is finding the point where the file gets much smaller but the photo still looks good. This tool makes that visible, with the original and compressed sizes shown side by side, so you are not guessing.
Start at a high quality setting and lower it slowly. For photos that will be viewed on a phone or a website, a moderate setting is often enough, and going very low will show blocky patches in skies and skin. If the compressed photo will be printed, keep the quality high and accept a larger file.
Privacy: this tool runs entirely in your browser — no upload, no signup, and your files never leave your device.
Shrink the file size of a photo so it sends quickly on WhatsApp, email or a website. Move the slider and watch the size change live.
How to use Image Compressor
- Choose or drop a photo into the tool.
- Move the quality slider to the level you want.
- Compare the original and compressed file sizes.
- Download the compressed photo.
Key facts
| Control | A quality slider, so you choose the trade-off |
|---|---|
| Formats | JPG, PNG and WebP output, depending on the source |
| Size display | Original and compressed sizes shown before download |
Frequently asked questions
How much can I compress an image before it looks bad?
It depends on the photo. Simple graphics and screenshots tolerate more compression than detailed photographs. Lower the quality in small steps and check faces, text and smooth areas such as skies, because those show compression first.
Does compressing an image change its dimensions?
No, compression here changes the file size, not the width and height. If you also need a smaller image in pixels, use the Image Resize tool first, then compress the resized result.
Why is my compressed image still large?
Some photos are already well compressed, and some formats store detail less efficiently. Try a different output format, or resize the photo as well, because fewer pixels almost always means a smaller file.
Is my photo sent anywhere when I compress it?
No. Compression runs entirely in your browser. The photo is never uploaded, and closing the page clears it.