Metacritic search fixer is a browser add-on for Chrome developed by Stainboy. This free extension aims to solve the issue of adding Metacritic to the search engines in Chrome. Previously, when attempting to add Metacritic as a search engine, users would encounter problems if the search term contained more than one word, as Metacritic uses a unique search string that replaces spaces with a "+", while Chrome assumes that a space should be replaced with "%20".

Metacritic search fixer builds upon FearJiri's Google-Chrome-URL-Replacer-Extension hosted on GitHub, with a few additional lines of code to ensure compatibility with modern Chrome browsers. The extension also includes icons for an enhanced visual experience.