Need a lighter file? This compressor re-encodes your image at an optimised quality that cuts the size substantially with no visible loss for photos. For graphics where you must keep transparency, stick with PNG output from the background remover instead.
How lossy compression buys you a smaller file
Compression works by discarding detail the eye barely notices — subtle gradations in tone and high-frequency texture that you would never spot at normal viewing sizes. Re-encoding at a tuned quality of around 72 keeps photos looking clean while typically removing the bulk of the file weight. The result loads faster, uploads quicker, and sails under attachment limits.
The trade-off is transparency. This tool outputs JPG, which has no alpha channel, so it is the wrong choice for a cut-out you want to keep see-through. For graphics that must stay transparent, hold onto the PNG straight from the background remover instead, and reach for the compressor only on flat photographic images.
When to compress and when to leave it alone
Reach for compression on photographs — product shots, portraits, scenery — where smooth tones hide the discarded detail. Be more cautious with screenshots, line art, or text-heavy graphics, where lossy encoding can smear sharp edges.
- Resize first with the image resizer — fewer pixels means a smaller file before compression even begins.
- Compress photos destined for the web or email here.
- Keep cut-outs from the JPG background remover as PNG when transparency matters.
Done in that order, you end up with the lightest possible file that still looks right at the size people actually view it.