Building a Chrome Extension to Make LeetCode Prep More Practical

Published: (January 2, 2026 at 04:50 AM EST)
1 min read
Source: Dev.to

Source: Dev.to

The idea

Build a simple Chrome extension that shows company tags directly on LeetCode problem pages, inside the LeetCode UI itself.

  • No new tabs.
  • No distractions.
  • Just information where it’s needed.

Get it on GitHub: LeetCo Here

LeetCo screenshot

What I built

The extension injects a small UI block below the problem title and displays:

  • Companies that have asked the problem
  • Interview relevance at a glance

The goal isn’t to replace LeetCode—just to make practice more intentional.

Extension UI example

Feedback welcome

This started as a learning exercise, but I’d love feedback from:

  • People who’ve built Chrome extensions
  • Anyone doing interview prep
  • Developers who enjoy building small productivity tools

Suggestions, issues, and PRs are always welcome.

Thanks for reading — and happy LeetCoding 🚀

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