Unlike other extensions, this one doesnt automatically provide Arial as fallback, to respect designers second choise of font family.
You can Follow the below Step By Step procedure to install the Remove Helvetica Neue Chrome Extension to your Chrome Web browser.
It is the Remove Helvetica Neue Chrome extension download link you can download and install Chrome Browser.
Change the appearance of the web instantly
Changes all the UI font to a user-given font.
Force the use of custom fonts for web pages. If you are professional in using CSS, the extension 'Stylish' is suggested.
Inserts CSS to optimize page text.
Font Rendering Enhancer for Chrome. Darker and clearer text on the pages (http and https).
Blocks the fonts you want to block.
Replaces Helvetica, Arial, Roboto with San Francisco, the System Font for OS X El Capitan. (Requirement: OS X 10.11 or later)