Heavy images slow down web pages and bounce off email size limits, but you rarely need full quality to get the job done. The Compress Image tool re-encodes your picture at a quality level you control and shows you the resulting file size, so you can find the exact point where the image still looks great but weighs a fraction of the original.
How to use the Compress Image tool
- Upload a JPG, PNG or WEBP image.
- Drag the quality slider and watch the preview.
- Click Compress.
- Download the smaller file and check its reported size.
Why compression is worth it
Every kilobyte you trim makes a page load faster and an email send more reliably. For a website, lighter images directly improve speed scores and the experience for visitors on mobile data. For everyday sharing, compression turns an image that is "too big to attach" into one that slips through without complaint. The trick is that human eyes barely notice moderate compression on photos, so the size saving is often dramatic while the visible change is tiny.
Tips for smart compression
- Photos compress best; JPG and WEBP respond strongly to the quality slider.
- For PNG line art, resizing usually saves more than quality changes.
- Resize first if the image is larger than it needs to be — that is the biggest saving of all.
- Stop lowering quality the moment you start to see fuzziness.
All processing is local, with no upload and no watermark, so you can compress as many images as you like in complete privacy.
Quick reference
| Property | Detail |
|---|---|
| Input | JPG, PNG, WEBP |
| Control | Quality slider |
| Live size | Shown after compressing |
| Watermark | None |
| Upload | None |