Compress Image
Reduce image size by adjusting quality. Runs right in your browser.
Drop your image here
JPG · PNG · WebP
Choose filesHow to use
- Upload an image (JPG · PNG · WebP).
- Pick the output format (JPG / WebP) and quality.
- Click Compress to see before/after sizes, then download.
Frequently asked questions
What quality should I choose?+
For web uploads, 60–80% works well. At the same quality, WebP is smaller than JPG.
Is transparency (PNG) preserved?+
JPG has no transparency and fills it with white. Choose WebP if you need transparency.
Are my files uploaded?+
No. Compression happens in your browser, so images never leave your device.
Is the pixel size reduced too?+
No. The pixel dimensions stay the same — only the encoding quality changes, so the image looks the same size on screen.
How much smaller will it get?+
It depends on the original, but a phone photo saved as WebP at 70–80% quality typically shrinks to less than half its size.
Guide
What determines an image's file size?
Three things: pixel count (resolution), file format, and compression quality. This tool keeps the pixel count untouched and reduces size by adjusting the format and quality.
JPG and WebP use lossy compression — they discard detail the human eye can barely perceive. The quality slider controls exactly how much is discarded.
What quality should I pick?
For websites and forum uploads, 60–80% is plenty — the difference is hard to notice while the savings are large. For photos you want to keep, 85–90% is a safer choice.
Prefer WebP as the format: at the same visual quality it is usually 25–35% smaller than JPG, and it supports transparency. If the file must open in older software, stick with the universally compatible JPG.
Where it helps
Images published on the web load noticeably faster after compression, which also helps search-engine rankings (SEO).
It is just as handy for upload forms with size limits, application portals, and slimming down email attachments.