This page opens in Quality mode at 75 with the output set to JPG, so photos in other formats (PNG, WebP, HEIC in Safari) are converted to JPG as they are compressed. Drop your photos and each one is re-encoded on your device.
What JPG quality means
A JPG stores a photo as 8 × 8 blocks of patterns rather than individual pixels. The quality number controls how finely those patterns are kept: at 90 and above almost nothing is thrown away; at 75 fine texture such as grass and fabric is simplified, which most people never notice on a screen; below about 50 the blocks and color smudges become visible, first around sharp edges and in smooth skies. Moving from quality 95 to 75 often halves a photo’s size or better.
The quality scale isn’t a percentage of the picture kept, and it isn’t the same between programs: quality 75 in one app can look like 80 in another. Judge by eye. The compare view shows the original on the left and the new JPG on the right; drag the divider across a face or a piece of text, and use Zoom to 100% to see the real pixels.
Make JPGs smaller without losing quality you can see
- Reduce the pixels first. A 4000-pixel phone photo shown in an email or on a web page at 1600 pixels carries six times the pixels it needs. Setting Maximum size to 1920 or 1600 cuts the file far more than lowering the quality would.
- Then lower the quality until you just start to see a difference, and go one step back up.
- Remove the metadata. Camera data, the embedded preview image and the location can add tens of kilobytes to a small JPG. They are removed by default.
If a form limits the file size instead, switch to the Target size tab or use the page for 100 KB.
JPG or something else?
JPG has no transparency, so a PNG logo on a transparent background gets a white background. For screenshots and graphics with sharp text, PNG usually looks better at the same size, and for your own website WebP makes smaller files than JPG at the same quality.
The settings on this page
| Mode | Quality |
|---|---|
| Quality | 75 |
| Format | JPG |
| Maximum size | Original dimensions |
| Metadata | Removed (EXIF, GPS location) |
Every setting can be changed in the tool above; the page only chooses where it starts.