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.

JPEG Compressor

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

Compress your image

PNG Compressor

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

Compress your image

GIF Compressor

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

Compress your image

WEBP Compressor

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

Compress your image

SVG Compressor

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

Compress your image

Analyze your image

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

Analyze your image

Article The 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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Article Finally 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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Article Finally 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.

Become a patron
News
2021-05-08 Bielefeld, Germany

In order to push compress-or-die.com a little bit, I'm looking for testimonials who would like to be published on the website with a fancy picture. If you are interested, feel free to reply to this tweet or write me: compress-or-die.com/feedback

Open tweet 2 4


2021-05-04 Sevilla, España

¿Has probado https://t.co/FRpDEqBPLF de @johnlindquist ?

Si tienes un Mac y te gusta trastear te lo recomiendo al 200%.

Script para mandar una imagen a https://t.co/wzD1cuI9bn de @McSodbrenner para comprimir, con Drag & Drop o desde el menú de finder: https://t.co/4AQti2vZyR https://t.co/bFpmM8YbtV

¿Has probado scriptkit.com de @johnlindquist ? Si tienes un Mac y te gusta trastear te lo recomiendo al 200%. Script para mandar una imagen a compress-or-die.com de @McSodbrenner para comprimir, con Drag & Drop o desde el menú de finder: github.com/johnlindquist/…

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2021-04-07 Bielefeld, Germany

Here it is, the brand new SVG Compressor: https://t.co/SDiJoHxSlk 🌟 It's actually based on "svgo", but I added an "Extreme compression" option which reduced the file size by 6 to 16% in my experiments. At the moment it is experimental 🧪 and I appreciate your feedback. https://t.co/5XJkAfvebF

Here it is, the brand new SVG Compressor: compress-or-die.com/svg 🌟 It's actually based on "svgo", but I added an "Extreme compression" option which reduced the file size by 6 to 16% in my experiments. At the moment it is experimental 🧪 and I appreciate your feedback.

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2021-02-22 Asse, Belgium

I wrote a blog post to give an overview/comparison of the next-gen image codecs #JXL, #AVIF, #WebP, predicting once again the end of the #JPEG, but this time for real (I hope).
 https://t.co/CEIQim8iVN https://t.co/gNQs04kpKB

I wrote a blog post to give an overview/comparison of the next-gen image codecs #JXL, #AVIF, #WebP, predicting once again the end of the #JPEG, but this time for real (I hope). cloudinary.com/blog/time_for_…

Open tweet 232 617


2021-02-15 Bielefeld, Germany

A devoted Compress-or-Die user ("mad scientist") sent a welcome surprise of an unsolicited donation of $100.00 and mentioned how important the tool is to her business. She said she wanted to show her appreciation in a tangible way. I'm overwhelmed. With this donation [1/2]

Open tweet 1 18

News
2021-05-08 Bielefeld, Germany

In order to push compress-or-die.com a little bit, I'm looking for testimonials who would like to be published on the website with a fancy picture. If you are interested, feel free to reply to this tweet or write me: compress-or-die.com/feedback

Open tweet 2 4