This is the image compressor for professionals, specifically designed for tasks where you have to squeeze out the last byte of your images. But you can use it of course for all your images. It's free to use.
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.
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.
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.
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.
Many thanks to the MINISTRY Group for hosting COD.
A closer look at how to load different preview images from progressive JPEGs with the help of Ajax and HTTP range requests. Also, @McSodbrenner introduces the Embedded Image Preview (EIP) technique ↬ Faster Image Loading With Embedded Image Previews smashingmagazine.com/2019/08/faster…
Have you ever had the problem that you wanted to compress a transparent product image and it should be on a certain background color? From now on you can set the color which will be used instead of the transparency. Thanks to @axelsalder for his idea! compress-or-die.com/jpg
A small but nice update at Compress-Or-Die. compress-or-die.com/analyze now shows the estimated quality for all quantization tables contained in a JPEG. To improve the privacy for all of us, I now also use Matomo instead of Google Analytics and have completely removed Addthis.