Image Compressor
Shrink JPEG, PNG and WebP files without uploading them.
Your image is decoded and re-encoded entirely on your own device, and the site is served with a Content-Security-Policy that permits connections only back to its own origin, so nothing on this page can upload it.
A photo straight off a phone is often several megabytes of detail nobody will ever see on a screen. This compressor re-encodes JPEG, PNG and WebP images at a quality you choose, and shows the result beside the original with both file sizes, so you can decide how far to push it before you download anything.
More about Image Compressor
Everything runs in your own browser. The file is read from your disk, re-encoded by your own device and handed back as a download, so there is no upload, no queue and no account. Most photographs still look fine at around 80 percent quality, which is where the slider starts, and the preview is there so you can judge that for yourself instead of trusting a number.
Format matters as much as the quality number. JPEG suits photographs, WebP is usually the smallest of the three at a comparable quality, and PNG is lossless, which makes it worth keeping only for screenshots, line art and images that need transparency.
- A quality slider from 10 to 100 percent for JPEG and WebP, with the result re-encoded a moment after each change.
- Reads JPEG, PNG and WebP files up to 25 MB and 40 megapixels.
- Saves as JPEG, PNG or WebP, with WebP offered only when your browser can encode it.
- Shows the original and the result side by side, with both file sizes and the percentage saved.
- Strips metadata such as GPS location and camera details as a side effect of re-encoding.
- Applies the orientation recorded by the camera, so portrait photos come out upright.
- Encodes off the main thread where the browser allows it, so the page stays responsive.
How to use it
- 1Drop a JPEG, PNG or WebP file onto the page, or click to choose one.
- 2Leave the output format as the original, or switch it to JPEG, PNG or WebP.
- 3Drag the quality slider, which applies to JPEG and WebP, until the size and the preview both look right.
- 4Compare the result with the original to confirm nothing you care about was lost.
- 5Download the result, which keeps the original file name with a compressed suffix.
Questions
Are my photos uploaded anywhere?
No. Images are read, decoded and re-encoded by your own browser, and the site's Content-Security-Policy permits connections only back to its own origin, so the page could not upload one even if it tried.
Why did my PNG barely get smaller?
PNG is lossless, so the quality setting does not apply to it and re-saving a PNG as PNG rarely removes much. Converting it to WebP or JPEG, or reducing its dimensions, is what actually makes it smaller.
Does this remove EXIF data such as GPS location?
Yes. Re-encoding rebuilds the file from decoded pixels, so GPS coordinates, camera model and timestamps are not written into the result.
What is the largest image I can compress?
Up to 25 MB and 40 megapixels. Larger images are refused after reading the file header and before any decoding, because decoding one can exhaust memory and crash the tab.
Which quality setting should I use?
Around 80 percent is a sensible starting point for photographs, and the comparison shows what each setting costs. Screenshots, text and line art usually need a higher setting, or a lossless format such as PNG.