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TheToolZip
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Image Compressor

Reduce the file size of your images, many at once, right in your browser.

Your files never leave your device

Drop JPG, PNG, or WebP files here

or

Up to 100 MB per file. Add as many files as you like.

75%

Applies to JPG and WebP. PNG is lossless: choose WebP or JPG for bigger savings.

How to compress images

  1. 1Drag your images into the box above, or click to choose them. JPG, PNG and WebP are supported.
  2. 2Choose a quality. 70–80% makes files much smaller while photos still look good.
  3. 3Optionally, pick a different output format. WebP usually gives the smallest files.
  4. 4Click Compress, then download each image or all of them as a ZIP file.

How image compression works

Photos from phones and cameras are often several megabytes, which is too large for many email attachments, upload forms and websites. Compression removes detail your eyes barely notice, making files much smaller.

The quality setting controls the balance. At 70–80%, most photos look almost identical to the original but are often 50–80% smaller. Lower settings save more space but can make images look blocky.

PNG is a lossless format, so it can't be compressed much by lowering quality. For PNG images, choose WebP as the output format for the biggest saving while keeping transparency, or JPG for photos without transparency.

If compression wouldn't make a file smaller, the original is kept, so you never end up with a bigger file.

Your files stay private

This tool runs entirely in your browser. Your files are never uploaded to a server, so nobody else can see them, not even us.Read our privacy policy

Frequently asked questions

How much smaller will my images be?

It depends on the image. Large phone photos often shrink by 50–80% at 75% quality. Images that were already compressed shrink less.

What quality setting should I use?

75–80% is a good choice for most photos. Use 85–90% if you'll print or zoom into the image, and 50–60% when file size matters most.

Why didn't my PNG get smaller?

PNG is lossless, so it keeps every pixel exactly. Choose WebP or JPG as the output format to make it significantly smaller.

Does compression change the image size in pixels?

No. The width and height stay the same. To make images smaller in pixels too, use the image resizer.

Is photo information (EXIF) kept?

Compressed images have their metadata, such as the camera model and GPS location, removed, which also saves a little space. If an image is already so well compressed that we keep your original, it stays exactly as it was.

Are my files uploaded to a server?

No. The conversion happens entirely in your web browser, on your own device. Your files are never sent to us or anyone else, so they stay completely private.

Is it really free?

Yes. There is no sign-up, no watermark and no limit on how many files you convert. The only limit is your device: very large files need more memory.

Does it work on my phone?

Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux. Very large files may take longer on older phones.

Learn more

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