Image compressor
Lower means a smaller file. 70 to 80 is a good balance for photos.
Smaller pixel size shrinks files a lot. Small images are never enlarged.
Getting a smaller file without an obvious loss
For most photos, a quality of 70 to 80 looks almost the same as the original at a fraction of the size. The biggest savings come from limiting the longest side: a 4000 pixel photo shown on a phone screen does not need all those pixels.
If compressing a file would not make it smaller, the tool hands back your original instead of a bigger copy. Need a precise limit like 100 KB for a form? Use Compress image to size.
Good to know
- Your images are processed in your browser and never uploaded.
- PNG files are converted to JPG or WebP, because PNG has no quality setting.
- Add up to 50 images and download them together as a ZIP.
A quick routine for a batch of photos
Add all the photos at once, pick one quality setting, and check the first result before downloading the rest. If the result is too large, lower quality a little or choose a smaller longest side; if it looks rough, raise quality. Small images are never enlarged, so adding a small photo to a batch will not stretch it.
Questions
Are my photos uploaded?
No. Compression happens in your browser, so your photos stay on your device.
What quality should I choose?
Try 75. If you can see a difference, move the slider up. If the file is still too big, move it down or limit the longest side.
Why did a file stay the same size?
It was already well compressed, and re-saving it would have made it bigger. In that case the original is returned unchanged.
How is this different from compressing to an exact size?
Here you choose a quality and get whatever size results. To reach a specific limit such as 50 KB, use the Compress image to size tool.
Does it work offline?
Yes. After your first visit the tool keeps working without an internet connection.
What is a good starting point for email photos?
The hint in the tool says 70 to 80 is a good balance for photos. Start there, and lower the longest side if the files are still too large for your email or upload.
Do I need to compress each photo separately?
No. Add up to 50 images, choose one setting, and each image is compressed with it. You can download them one by one or together as a ZIP.