Code Forge

Pick Python or JavaScript, work through short exercises, and run real code right in your browser — with instant pass/fail feedback and an optional AI explanation.

Exercises
Ask AI to explain

Free to use — shares a limited daily capacity. Used only when you click "Explain this".

CODE FORGE — LOADING NOT RUN YET

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Output

Run your code to see output here.

About Code Forge

Code Forge teaches Python and JavaScript with short exercises. Your code runs for real in your browser, with instant pass or fail feedback and an AI explanation.

How to use Code Forge

  1. Choose Python or JavaScript and describe what you want to learn.
  2. Press “Start lesson”.
  3. Run the examples, answer the exercises, and continue at your pace.

Do I need to install Python?

No. Python and JavaScript both run right in your browser.

Is Code Forge free?

Yes. It is free to use, with no account, no watermark and no paywall. The AI uses a free shared allowance; if it is busy or at its daily limit, try again later or add your own Gemini key.

Are my files uploaded?

Only the text you give the AI leaves your device: it is sent to Google’s Gemini model through MigaBuilder’s free AI service, or through your own Gemini key if you add one. Editing, previews and downloads all happen in your browser.

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View source on GitHub (MIT licensed) →