Does the add-on work out of the box?
Yes, once installed it is automatically enabled. Be aware though, minification is disabled for registered users by default. Also, dashboard pages won't be minified. Please note that if you have full page caching enabled, you should empty the cache to see any changes!
Could this add-on break my site?
Minification doesn't work, help?!
HTML minification won't work when:
Why is minification disabled for dashboard pages?
My page renders differently after installing Minify HTML
If you encounter problems, disable the add-on and check the page again. If you think the minification causes problems, please submit a support ticket. Also, make sure your HTML is valid. A good checker is the one from W3C: https://validator.w3.org
Is the code up-to-date?
If you run 8.4.0 or higher, you'll be served with a newer version of the add-on.