Understand unfamiliar code
Inheriting someone else’s code — or reading a snippet from the web — can be slow going. This tool walks through what the code does step by step, in plain language, and flags anything risky or surprising. It is a fast way to learn a new codebase, review a pull request, or study an example.
How to use it
- Paste the code snippet.
- Click Explain code.
- Read the step-by-step breakdown and any warnings.
Frequently asked questions
Which languages does it support? Most common languages — JavaScript, Python, Java, C#, SQL, Go, PHP and more.
Is the explanation always correct? AI is very capable but not infallible — verify anything you will rely on.
Is my code stored? It is sent to the AI provider to generate the explanation and is not saved by us. Avoid pasting secrets.