Overview
Step-by-step visual execution tracer with inline annotations on LeetCode.
CodeTracer is an interactive visual execution tracer for LeetCode. Step through your Python3 solutions line-by-line directly on LeetCode with: - Real-time step-by-step playback controls (Play, Pause, Step Forward/Backward, Slider) - Inline code annotations showing evaluated expressions and variables at each step - Interactive N×N Matrix / 2D Grid visualizer for grid problems (BFS/DFS/DP) - Dynamic tracking of Dictionaries, HashMaps, Sets, and Lists 100% private and offline: Powered by a local WebAssembly Python runtime (Pyodide). No code or personal data ever leaves your browser.
Details
- Version1.0.0
- UpdatedSeptember 20, 2026
- Size5.5MiB
- LanguagesEnglish
- Developer
Email
wardahjabeen36@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
