by chengyin

The core of WhatFont Tool

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WhatFont is a JavaScript script to detect what font in the stack is being used on any elements of a web page.

Here in the repo is the core component with out wrappers, the wrapped Chrome/Safari extensions are available at


How to Use

is the core script. It adds
into the global scope. WhatFont then runs in a closure created by the

An controller object is returned by

function. The controller will be used to set up the dependencies (jQuery and stylesheet) and initialize WhatFont.

This controller has the following functions:

  • setJQuery(jQ)

    WhatFont requires jQuery (v1.5.2), if jQuery has already been loaded into the global scope, the script finds it automatically. Otherwise

    needs to be called to set up jQuery object.
  • setCSSURL(url)

    WhatFont injects its stylesheet file into the webpage. The script comes with a default URL setting, if you want to change the setting, calling this function.

  • getVer()

    Return the version of WhatFont.

  • init()

    Initialize WhatFont and inject to the current

  • restore()

    Remove WhatFont from current



wf = _whatFont();       
wf.setjQuery(jQuery);       // Setup jQuery
wf.init();                  // Load WhatFont
wf.restore();               // Remove WhatFont

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