Leetcode Notes

Take comprehensive notes for LeetCode problems with auto-save, themes, and cross-session sync.

Take notes right where you solve. LeetCode Notes adds a notes sidebar to every LeetCode problem, so your approach, mistakes and solution are there when you need them again, especially the night before an interview. ✨ NEW IN 2.0: REBUILT FROM THE GROUND UP • Completely redesigned sidebar with a sleek OLED-black dark theme (light theme too) • Import your past accepted LeetCode solutions in one click • Flag problems "To review" and keep a revision list • Organize notes into folders with drag-and-drop • Share any note with a link • LeetCode code and topic tags can fill in automatically • Your settings sync to your account across devices 📝 WRITE • Capture the idea and approach, plus the mistakes that tripped you up • Record time and space complexity, with one-click quick-fill (O(1), O(n), O(n log n)…) • Auto-copy your solution code from the LeetCode editor, or pull it in with a click • Auto-add the problem's LeetCode topic tags, plus your own custom tags • Everything auto-saves as you type and syncs to your account 📂 BROWSE • Folders for patterns like Sliding Window, DP and Graphs, or create your own • Drag notes between folders and sort folders your way • Search by title, tag or code • Filter by difficulty (Easy / Medium / Hard) and date (today, this week, this month, custom range) • Right-click a note or folder for quick actions: review, share, delete • Open any note in full detail, copy its code, or jump back to the problem on LeetCode 📊 STATS • Total notes with an Easy / Medium / Hard breakdown • Your "to review" count, so you know what to revisit • Your most-used topic tags at a glance ⬇️ IMPORT FROM LEETCODE Already solved hundreds of problems? Go to Settings → Import from LeetCode to bring your past accepted solutions into your notes, using the LeetCode account you're signed into in this browser. 🚀 HOW IT WORKS 1. Open any problem on leetcode.com 2. Click the LeetCode Notes logo next to the Submit button 3. Sign in, then write your notes. Everything saves automatically. 4. Use Browse and Stats to review your notes anytime 💡 PERFECT FOR • Coding interview preparation • Spotting and remembering problem-solving patterns • Spaced review of problems you got wrong • Building a personal DSA knowledge base 🔔 UPGRADING FROM 1.x? Version 2.0 asks for access to leetcodenotes.com (where your notes are stored), and you'll need to sign in once more. Your notes are safe. We're constantly improving based on user feedback. Have suggestions? Contact us at solocoderdev@gmail.com Start building your LeetCode knowledge base today!