Palefill Web Technologies Polyfill Add-on

Palefill is an add-on for Pale Moon that injects polyfills into pages to improve compatibility.
Features

Polyfills are specified as “fixes” that are applied based on selector rules. Fixes currently can be:

• scripts that must be loaded
• injected inline-scripts
• Content-Security-Policy adjustments
• script content changes

It is possible to specify any combination of required fixes for a site. See the technical documentation for more details.
Supported Platforms

Palefill is developed and tested on the most recently released version of the Pale Moon browser. New features and fixes always target this browser and the then-current state of the web.