GitGuessr Mapper

Create, reviews and updates GitGuessr map files while browsing GitHub

Use this extension to maintain your own code maps for GitGuessr. It lets you create new maps or takes existing maps in JSON format as input. Browse a GitHub repo at a specific commit to easily add locations to a map by highlighting the line numbers in the GitHub UI. You can also step through all locations for a map. All data is stored locally only, nothing is sent to a server. After making changes to a map within the extension, download the map in JSON format again and upload it to GitGuessr.