NOTE: This project is now being maintained as cross-browser, WebExtension based extension called Web API Manager.

This extension allows users to choose which parts of the Web API they expose to websites, using a technique that minimizes the effect of the desirable parts of browser functionality.

This extension was built for versions of Firefox before Mozilla started enforcing code-signing on extensions, and before they deprecated parts of their previous add-on API.

As a result, running the extension requires running a previous version of Firefox (version 43.0.4) and using a special profile configured to not require code signing. Such a profile is included in this repository, and is configured to already have the extension installed.

You can run the extension with the following steps.

1. Download Firefox 43.0.04 for your platform.
2. Run that version of Firefox so that it uses the included profile: For example, on OSX you would run: <path to version 43.0.04 Firefox.app>/Contents/MacOS/firefox --profile <path to this archive>/n7hzhgm2.Control.

Once you're running Firefox with the extension installed, you can configure it through the following steps:

1. Go to the "Add-Ons" screen in Firefox
2. Click the "Preferences" button next to the "Web Standard Blocker" extension
3. Click "Configure WebAPI Settings" on the next page.

The resulting page allows you to configure which WebAPI standards are enabled by default (for newly encountered pages). It also allows you to set custom rules for other domains, using regular expression patterns.

If a custom rule's pattern matches a visited domain, that particular Web API configuration will be used. Otherwise, the "default" rule set will be used.

Note that you must restart Firefox in order for these changes to become active. This is an implementation detail of doing this modification at the extension level. Pushing this work into the browser itself would not require this additional step.