Use the most advanced image compressors for free

Trusted by professionals around the globe to compress their images to a minimum. Compare these tools with any other app.

JPEGCompressor

Converts your lossless PNGs or high quality JPEGs into lossy JPEGs with the smallest filesize possible.

Compress your image

PNGCompressor

Converts your lossless PNGs or high quality JPEGs into lossy PNGs with the smallest filesize possible.

Compress your image

GIFCompressor

Converts your GIFs into lossy GIFs with the smallest filesize possible.

Compress your image

WEBPCompressor

Converts your lossless PNGs or high quality JPEGs into lossy WebPs with the smallest filesize possible.

Compress your image

SVGCompressor

Converts your SVG vector files into SVGs with the smallest filesize possible.

Compress your image

Analyzeyour image

Gives you a lot of information found in the given image (JPEG, PNG, WebP, GIF and SVG).

Analyze your image

What users are saying …

ArticleThe big image compression tool comparison

There are a lot of articles about online image compression tools in the net, most of them are very superficial. Usually they end with a simple: "It generates smaller pictures, so it's got to be better."

Learn why such statements are most of the time meaningless, understand the technical background, and find out which tool you should use as of today.

18 min read

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ArticleFinally understanding JPEG

Image of man painting with color

If you always wanted to know how the JPEG compression works under the hood I want to recommend this article to you. It was important to me to write an article that is reasonable for every level of understanding.

Furthermore it contains 7 valuable tricks to reduce the file size of your JPEGs by exploiting the technical functionality of the JPEG compression algorithm.

22 min read

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ArticleFinally understanding PNG

Boy laughing when understand something written in a book

Ever wondered why some of your PNGs are of large file size while similar PNGs are so small?

Since this question comes up so often, I have written a follow-up to my article "Understanding JPEG" to explain the bare necessities of the PNG compression algorithm in layman's terms.

At the end you will also get 7 tips on how to get your PNGs to a REALLY small file size.

15 min read

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That's me

Christoph Erdmann

Hi! I’m Christoph, working as a programmer/developer in Bielefeld/Germany.

Since I was building an advertising tool, I had to learn a lot about image file formats and compression.

This tool is some kind of a by-product and turned out to be my sweet little baby. So have fun using it! I hope it will help you as much as it does for me.

Thank you very much!

With their great support, the following patrons ensure that Compress-Or-Die is kept alive.

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News

Thanks to your images sent to me for review, I was now able to solve the problem of many GIFs. A large part of the GIFs sent in were ... cut off. The end of the file was simply missing. I now discarded the last invalid frame of the file and added an end marker, making ... [1/2]

2021-08-2505Bielefeld, Germany

... the file processable again. Interestingly, browsers do this on their own when displaying, which meant the GIFs didn't look broken. [2/2]

2021-08-2503Bielefeld, Germany

Thank you so much for sending me your pictures which make problems in Compress-Or-Die. That helps a lot. 🤗 I got lots of broken images 😵 and was able to provide the first fixes. The following images should no longer cause problems: [1/2]

2021-08-2016Bielefeld, Germany

💣 Images which pretend to include a color profile but don't have one. 💣 RGB images with an embedded CMYK color profile (whatever sense that should make). 💣 CMYK images without a color profile. Happy compressing! [2/2]

2021-08-2002Bielefeld, Germany

I just added a gamma correction to 2.2 in compress-or-die.com . Before this correction, the image from this page, for example, generated the apple and not the pear: sudonull.com/post/128633-An… Nice test image for a lot of image compressors :)

2021-07-0103Bielefeld, Germany
News

Thanks to your images sent to me for review, I was now able to solve the problem of many GIFs. A large part of the GIFs sent in were ... cut off. The end of the file was simply missing. I now discarded the last invalid frame of the file and added an end marker, making ... [1/2]

2021-08-2505Bielefeld, Germany