Compress image
Pick the quality and your images, and see how much each one shrank before you download. All in your browser.
Lower quality, lighter file. Between 60% and 80%, the difference is hard to see.
JPG, PNG, WebP, GIF or HEIC. Up to 20 MB each and 20 at a time.
Your images never leave your device: everything happens in the browser, nothing is uploaded.
How to compress an image in 3 steps
Pick the quality
The default is 75%. Lower quality makes the file lighter.
Choose your images
Tap Choose images and select one or many. The list shows the size before and after each one.
Download
Tap Download image, or Download all to get a .zip.
Changed the quality after choosing the images? The tool redoes everything on its own, and the new sizes show up in the list. That way you find the right spot without downloading several times.
What compression does
Image compression throws away detail the eye barely notices, such as tiny color changes in similar areas. That’s what JPG and WebP do, and the quality setting says how much to drop: at 90%, almost nothing; at 50%, quite a lot.
What stays out of it:
- width and height don’t change. A 4000 px photo stays 4000 px. Making the dimensions smaller is what cuts the file the most, and that’s on the image resizer page;
- the format only changes when it helps. A PNG without transparency becomes JPG; with transparency, WebP;
- the file never gets bigger. If the image was already light and compressing didn’t shrink it, you get the original.
Quality and size
| Quality | When to use it |
|---|---|
| 85% to 95% | Photos to print or for a portfolio |
| 70% to 80% | Everyday use: websites, shops, email, messages |
| 50% to 65% | When the size limit is tight |
| Below 50% | Thumbnails only: blotches show up |
Many forms accept attachments of up to 1 or 2 MB, and light images make websites and shops faster. Start with the default 75% and only go lower if it’s still over the limit.
Your image never leaves your device
Many online compressors upload your photo to a server. Here, everything happens in the browser: the image is opened and saved again in your device’s memory, with no upload. The compressed version also comes out without the photo’s hidden data (EXIF), such as location.
Limits
Up to 20 images at a time, up to 20 MB each. Huge images are scaled down to fit the device’s memory, and the screen tells you when that happens.
More image tools
To change the format, use the image to JPG converter, which also does PNG to JPG. To download a Pin’s image at the largest size stored, use the Pinterest image downloader.
Frequently asked questions
How much smaller does the image get?
It depends on the photo and the quality you choose. A phone photo at 75% often drops to less than half. The list shows the size before and after each image, and the total.
Which quality should I pick?
Between 60% and 80%, the difference is hard to see on a phone screen. Below 50%, blotches and blurry edges start to appear. The default is 75%.
Does the image keep its format?
JPG stays JPG and WebP stays WebP. A PNG without transparency becomes JPG, which is much lighter. A PNG with a transparent background becomes WebP, so the transparency isn’t lost.
Why did one image keep its original size?
Because compressing didn’t make the file smaller: it was already light. In that case you get the original file, unchanged. We never hand back a file bigger than the one you brought.
Do the dimensions change?
No. Width and height stay the same. To make the dimensions smaller too, use the image resizer.
How do I get an image under 1 MB or 500 KB?
Lower the quality step by step and watch the size in the list: it redoes everything on its own after each change. If 50% still isn’t enough, resize it first and compress again.
Is the image uploaded to a server?
No. Compression happens in your browser, using your device’s memory. The image never leaves it and nothing is kept.
How many images can I compress at once?
Up to 20, up to 20 MB each. Download all gives you a .zip with the compressed images, with “-min” at the end of each name.
Does it work on iPhone?
It works in Safari. Since Safari can’t save WebP, a PNG with a transparent background stays PNG and, if it doesn’t get smaller, you keep the original. JPG photos compress normally.