I made two extensions actually. The first one being
Polymoji: It's a browser extension that allows users to replace standard system emojis with alternative emoji families (such as Google, Twitter/X, or Facebook styles) via a content delivery network (CDN). It enables consistent, customized, and colorful emoji rendering across different websites in the browser. You can get it here
On Firefox: https://addons.mozilla.org/en-US/firefox/addon/polymoji/
On Microsoft Edge: https://microsoftedge.microsoft.com/addons/detail/mnbppeknlhhielpeobipchmpdiaehcak

I also made Typeshift. It's an extension for Microsoft Edge and Firefox designed to change the typography on websites. It Includes over 100 built-in fonts, allows uploading custom .ttf, .woff, or .otf font files, works on social media sites, and includes accessibility features like OpenDyslexic.