There will be a TYPO3 upgrade to version 9 today between 10:30am and lunch (CET). The Extension Repository will have a maintenance page in this time and will be not available.
Thanks for your patience!
Extends TYPO3's compressor for JS and CSS with minifier. This may save you up to 60% of default compressed file size. Also compresses HTML output of TYPO3. Full composer support.
Uploaded on 21 Dec 2018 by Armin Vieweg
This extension supports TYPO3: