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Compress image

Shrink the file size of a photo or screenshot so you can email it, upload it to a website or save space. You choose the quality, see the resulting size before downloading, and everything happens in your browser.

  • Free
  • No sign-up
  • In your browser

Drag an image here

JPG, PNG or WebP · max. 25 MB

How to use this tool

  1. Drag a JPG, PNG or WebP image into the box, or click “or choose a file”.
  2. Pick the output format (JPG or WebP) and move the quality slider. To save even more, enter a maximum width in pixels.
  3. Compare the original size with the compressed size and the percentage saved, which are recalculated every time you change a setting.
  4. Click “Download”. If your settings wouldn't make the image any smaller, the original is kept unchanged: you'll never download a bigger file.

How an image's file size is reduced

This tool uses lossy compression: when saving as JPG or WebP at a quality below 100, the encoder throws away fine details the eye barely notices, such as small variations in color or texture. The lower the quality, the smaller the file and the more visible the artifacts become: blocks, blurry edges or banding in gradients.

The other effective way to save space is to reduce the dimensions. A phone photo usually has far more pixels than are shown on a web page or in a chat, and lowering the width reduces the total number of pixels that have to be stored.

Which quality to choose

There's no perfect value for every image, because it depends on the content. As a rough starting point:

  • 75 to 85: usually a good balance for photos that will be viewed on screen.
  • 50 to 70: much lighter files; check the preview, especially faces, text and skies.
  • Above 90: the visual difference is minimal, but the file grows a lot and can sometimes end up bigger than the original.

JPG or WebP

JPG is the most compatible format: any device, program or platform can open it. WebP usually produces smaller files at similar quality and also supports transparency. Current browsers display it without issue, but some older programs and certain web forms still don't accept it.

If your image has transparent areas (a PNG logo, for example), WebP is selected by default. If you prefer JPG, transparent areas are filled with white, because JPG doesn't support transparency.

Metadata and privacy

The image is re-encoded from scratch in your browser, so the resulting file doesn't keep the original's EXIF metadata, such as the date, camera model or GPS location if the photo had one. The photo's orientation is preserved: it's applied directly to the pixels.

For the same reason, embedded color profiles aren't kept either. It isn't noticeable in most photos, but it's worth checking for print work or professional photography.

Examples

A phone photo to send by email

A 4000 × 3000 px photo at quality 80 with a maximum width of 1600 px usually takes up a fraction of the original file and still looks good on screen. The exact saving depends on the photo; the tool shows you the real size before you download.

A PNG logo with a transparent background

When you load it, WebP is selected to keep the transparency. If you switch to JPG, you'll see a warning: the transparent background will become white.

A screenshot with lots of text

Text suffers before photos do as quality drops. Start at 85, check the preview and lower it gradually. If those settings can't reduce the size, the tool keeps the original.

Frequently asked questions

Are my images uploaded to a server?

No. The image is read, compressed and prepared for download inside your browser. It isn't sent to Utilio or anyone else, and it disappears when you close or reload the page.

What if my image is already well optimized?

If the original was already saved at low quality, re-encoding it can't bring back detail and sometimes only adds size. In that case the tool won't give you a bigger file: it keeps the original unchanged and tells you so. Maximum quality is 95 because above that the file grows a lot with no visible improvement.

Can I compress a PNG without losing quality?

This tool creates lossy JPG or WebP files, which is what reduces size the most. If you need every pixel intact, as in diagrams or pixel art, it's better to keep the original PNG or reduce its dimensions with the image resizer.

What's the maximum size?

Files up to 25 MB. If the image is larger than about 16.7 megapixels, the result is scaled down automatically so processing also works on phones, and you'll be told the final dimensions.

Are EXIF data and the photo's location kept?

No. When the image is re-encoded, the new file doesn't include EXIF metadata, so it doesn't include the GPS location either. The orientation is applied to the image, so it won't appear rotated.

Related tools

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