php extensions should work as well

[Thejuggy]

Does not work with html in a file with a php extension (.php)

[ehedaya]

Also .jsp files, which often contain HTML code in them. If you change the page type in the bottom right corner to "HTML" it works just fine, but that's a hassle. Seems like adding support for other file types that could contain HTML would be a great addition. Thanks!

[ehedaya]

I've worked around this by commenting out the grammar checking code entirely.

[uzyn]

That's a legit feedback. We could probably use an option to disable and/or customize grammar checking.