Blocks the fonts you want to block. Right click on an annoying custom web font and click "Block custom font" to add it to the local database. The font will be blocked immediately.
What is Font blocker?
Font Blocker is a Firefox add-on that enables you to block custom web fonts that you find annoying. By simply right-clicking on the font and selecting 'Block custom font,' it will be immediately blocked and no longer displayed on websites.
Font blocker is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Font blocker if you trust the publisher.
Font blocker is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.