Compress an Image
Your image stays in your browser and is never uploaded. Maximum 10 MB and 25 megapixels.
What this tool does
Choose dimensions in pixels, a percentage, or centimeters with DPI. See the result and expected file size immediately. Your image stays in your browser.
What people use this for
- Smaller website files
- Set dimensions in pixels, percentages or cm
- Use DPI for print work
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Leave a review on Google tooFrequently asked questions
What does DPI mean in this tool?
DPI determines how many pixels per inch are used when you enter a physical size in centimeters. The tool converts cm to pixels; for print, the downloaded file may still need separate DPI metadata.
Can I preview the result?
Yes. After each change the preview shows the new dimensions, the estimated file size and the difference from the original, so you can judge the trade-off before downloading. Compare at the size the image will actually be displayed at — artefacts that are obvious at 400 percent zoom are usually invisible in the page itself.
Which format is downloaded?
The download is always WebP. That is a deliberate choice: at comparable image quality WebP typically produces files a quarter to a third smaller than JPEG, and it is now supported by every mainstream browser. If you specifically need JPEG or PNG — for a system that will not accept WebP, say — use the convert tool, where you choose the output format yourself.
Is the original changed?
No. The tool reads your file, produces a new version and offers it as a download; the original on your disk is untouched and never overwritten. Keep that original, because compression is not reversible: the detail that was discarded does not return by compressing less heavily later. Always work from the original for any further edit.