![]() However, it must be installed at the server-level. Brotliīrotli is intended as a replacement for the ubiquitous gzip compression that can be applied to the actual HTML code of your page, as well as JavaScript, CSS, and other text-based content on your site. Our favorite JPG encoder is mozjpeg, and to date, I have not seen a better lossless JPG optimizer. They can be further compressed by any standard JPG optimizer using progressive encoding. That's already considered "slow" by many, but Guetzli sets a new bar for "slow" at nearly 6 minutes, and the compression is much worse than TinyJPG with only 26% savings.Īdditionally, images produced by Guetzli are not optimized. For example, compressing a 1.2MB JPG takes about 7 seconds with TinyPNG, and results in 60% savings. Guetzli uses ridiculous amounts of CPU and memory (the default memory limit is set at 6GB, ouch). The HUGE disadvantage to Guetzli is the resource consumption. Then, and only then, does it beat "normal" JPG encoders. It is meant to be used when saving a JPG from a PNG image or other lossless/high-quality input. First of all, Guetzli is NOT a JPG optimizer. Once you've saved a JPG, it is not useful to re-compress the image with Guetzli. It is a JPG compressor, one time only. Guetzli is no exception to that, but the hype is a bit ridiculous on this one. GuetzliĪnytime Google does something new, folks pay attention. This is why we use their software to power the Premium Plus level of our own API. However, TinyPNG and TinyJPG use much better algorithms that excel at preserving image quality while also achieving a high rate of compression. Most common techniques simply see how far you can go without completely destroying the image quality. They use a very different approach compared to images produced by Google's PSI testing tool, or any of the more common JPG libraries. The folks behind TinyPNG and TinyJPG have come up with something pretty amazing. If you don't see it in this list, shoot me a note and I'll see if it warrants a section here. ![]() I've covered many of the WordPress plugins in a separate article, but there are a few others that you might be wondering about. There are a lot of tools out there for compressing images. ![]()
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