Is image compression really free and unlimited?

Yes. No accounts, no watermarks, no daily caps. Compress as many images as you like.

Are my images uploaded to a server?

No. Compression happens entirely in your browser using the Canvas API. Open DevTools → Network and you'll see zero uploads.

PNG is a lossless format — there's no quality setting to adjust. Switch to JPEG or WebP to use the quality slider.

For photos, JPEG at 70–80% quality is usually smallest. For flat graphics, WebP often wins. PNG stays lossless so it's rarely the smallest.

JPEG has no transparency, so transparent areas are filled with white. Use PNG or WebP to preserve transparency.

Shrink JPG, PNG & WebP files with a quality slider — private & instant.

100% private — no uploads Image ToolsFree & unlimited Read tutorial

Watch a quick simulation of this tool in action — no file needed.

Follow these steps — everything happens instantly in your browser.

1
Step 1. Drop an image (PNG, JPG or WebP) onto the zone.
2
Step 2. Pick an output format and drag the quality slider — the preview updates instantly.
3
Step 3. Compare the original and compressed sizes shown side by side.
4
Step 4. Click “Download compressed image” to save the smaller file locally.