Compress JPEG

Reduce a JPEG file size in your browser with a single quality slider.

Your files stay on your device — nothing is uploaded.

How to compress a JPEG

  1. Drop your JPEG on the box above, or click to choose it.
  2. Move the quality slider and watch the file size change.
  3. Check the picture still looks good in the preview.
  4. Press Download to save the smaller JPEG.

How JPEG compression works

JPEG shrinks a photo by dropping fine detail that the eye barely notices. The quality slider sets how much it drops. A higher number keeps more detail and a larger file. A lower number throws away more and makes a smaller file. This tool re-saves your JPEG at the quality you choose, so you can find the point where the file is small but still looks fine.

A tip about saving twice

Every time a JPEG is saved, it loses a little more detail. So it is best to compress from the original photo, not from a copy that has already been squeezed several times. If your image already looks soft, compressing it again will not help much and may add more blur.

Good quality settings

For a photo you will view on a screen, a quality around 70 keeps it looking clean while cutting the file size a lot. For printing, stay higher, near 85 to 95. For a quick web thumbnail, you can go lower. Watch the preview as you slide.

FAQ

Will compressing blur my photo?

At high quality the change is very hard to see. As you lower the slider, soft blocks and fuzzy edges start to show. Stop before that point.

Does the image get smaller on screen?

No. The width and height stay the same. Only the file size drops. Use the resize tool to change the pixel size.

Why did my file barely shrink?

If the JPEG was already saved at low quality, there is little left to remove. Compressing an already small file gives little gain.

Should I keep the original?

Yes. Compress from the original when you can, since each save loses a little detail.

Are my files uploaded?

No. The work runs in your browser and nothing is saved.

Is compress JPG the same as compress JPEG?

Yes. JPG and JPEG are one format with two file endings, so this JPEG compressor handles both. It will shrink a JPG by re-encoding at a lower quality, which can reduce JPEG file size by half or more with little visible change.