Easily block (nullify) undesired Web API(s) and improve your privacy.
WebAPI Blocker is a lite addon that lets you easily block and nullify a desired web API.
Simply open the toolbar popup UI and choose an API from the drop-down list (top left side). Then, click on the (+) button to add the item to the API list. Once you add an item, you can remove it from the list by clicking on the "remove" button next to each item. Moreover, you can deactivate an item by removing the checkmark from the list. There is also a "reload" button at the top toolbar to reload the active tab. On the right side, you can add desired domains to the whitelist table. Please enter a domain name in the input field and then click on the (+) sign to add it to the table. To remove a domain, please click on the cross sign next to each item.
Note: please be careful when you block (nullify) a web API. Because certain API(s) may cause websites to not fully load or even make them unresponsive. Therefore, please do enough research before disabling an API.
To report bugs, please fill the bug report form on the addon's homepage (https://mybrowseraddon.com/webapi-blocker.html).