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

JPEG XLCompressor

Converts your image files into the next-generation image format JPEG XL 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

Repairyour image

Repairs and fixes your corrupted and broken PNG images.

Repair your image

  • Made in Germany
  • EU GDPR compliant

What professionals are saying …

ArticleThe nasty red JPG compression artifacts

Why, JPG, why?

During an exchange with an illustrator about another article, he asked me why the JPEG format is so bad at handling the color red. As an explanation, I have already run across several variants. So I simply answered the questions with the variant that seemed most plausible to me.

But was that really the right answer? And if we knew the right answer.... then can't we do something about it?

15 min read

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ArticleBetter image quality in your Twitter tweets

An abstract twitter image

Every now and then I come across tweets where users are upset about the lousy quality of their posted images after Twitter compresses them and doesn't speak well of Twitter.

But is the quality really that bad? Does Twitter really not care about image quality? Is Twitter trying to save storage space on its servers at all costs? Or are the users themselves to blame and have already uploaded their images in poor quality?

I took a closer look at what Twitter actually does with your images in the tweets.

18 min read

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ArticleThe big image compression tool comparison

Logos of compress-or-die, optimizilla, JPEGmini, Compressor.io, tinyjpg, kraken.io

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!

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News

Have you ever wondered why the JPEG format shows such strong compression artifacts on red areas? Me too... and took a look at it in detail. 🧐 I also show a solution that can achieve better results with some images. compress-or-die.com/The-nasty-red-…

2023-01-0900Bielefeld, Germany

⚡ Important update to my article "Better image quality in your Twitter tweets": It is indeed possible to preserve the original quality of a JPG in a tweet if you follow some specific rules. 😮 Read more here: compress-or-die.com/Better-image-q…

2022-12-2101Bielefeld, Germany

Now and then I come across tweets where users are upset about the lousy quality of their posted images after Twitter compresses them. Does Twitter really not care about image quality? I took a closer look 🧐at what Twitter actually does with your images. compress-or-die.com/Better-image-q…

2022-12-091849Bielefeld, Germany

I assume the Chrome team is preparing a more detailed rationale for their decision on JPEG XL. It would have been better to first collect all the evidence and arguments, involve internal and external experts and the community in general, agree on what the facts are and ... (1/3)

2022-11-05119Asse, Belgium

At the moment something worrying is going on regarding the hope of the image compression "JPEG XL". Because it's a bit much for a tweet, I've summarized the latest here:urz zusammengefasst: patreon.com/posts/google-k… #jpegxl #chrome

2022-10-3112Bielefeld, Germany