Gineko is a code search extension for GitHub, available for Chrome.

Features 🔥
🔎 Search Code: Press Cmd+Shift+F to quickly search over all files in the current branch.
🗂 Jump Files: Press Cmd+/ to open the file list and let you navigate to any file
🎨 Support Dark Theme and Rich icons
↔️ Resizable layout

Github repo: https://github.com/codolab/gineko
Chrome store: https://chrome.google.com/webstore/detail/gineko-github-code-search/kcehbgaiaeifnpdhleceeckldighdlgk