Simple button to open html files.
The extension was made due to lack of the functionality
in Firefox on some operating systems.
You can use it to open HTML files in Firefox on Android.
WARNING! Because of Firefox bug #12731 and maybe some other Firefox bugs with tab memory clearing all tabs including tabs that were opened with Simple button to open html files extension may try to reload its content. But in case of tabs that were opened with Simple button to open html files it leads to full tab memory clearing.
Use Addons.mozilla.org (AMO) link to install the extension.
On Android you can install the extension in Firefox Browser (Nightly for Developers) only and by Expanded extension support in Firefox for Android Nightly instruction only.
JsChardet under LGPL 2.1 License. It is used to detect encoding
https://github.com/aadsm/jschardet