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FREE · EMAIL TO DOWNLOADNode.js

Code Explainer: paste code → plain-English explanation + line-by-line

Paste any code snippet, pick an audience (junior dev, PM, or future self), get an overview plus a line-by-line breakdown. Two-pass detect-then-explain pipeline.

Stack: Node.js / Next.js·OSS difficulty: easy·Email to download
Try it now

Live demo, in your browser.

Test the wrapper before you download. The free demo routes through qwen2.5:3b on our VPS (free, slower). Want to test with your own Claude, OpenAI, or Ollama URL? Use the bring-your-own-model panel below the demo. The download lets you swap providers freely.

Default: free qwen2.5:3b running on our VPS (~10-30s per request). Switch to your own model below for faster output.

Output will appear here after you run the demo.
What is in the ZIP

Code, guide, samples. Enough to ship in 30 minutes.

  • Node 20 + Express server, POST /api/explain runs two Claude calls (detect + explain)
  • 3 audience modes: junior dev, product manager, yourself in 6 months
  • Line-by-line JSON breakdown with verbatim code and one-sentence explanations
  • Vanilla HTML/JS frontend, dark theme, no build step
  • Ships with 3 samples across Python, JavaScript, and SQL
  • Swap-in guide: Claude Haiku 4.5 to Ollama Llama 3.1 8B in 4 env-var lines
  • Layman-language guide on the OSS swap (no jargon, no assumed expertise)
  • README with copy-paste setup commands
  • Sample inputs and reference outputs

Adding it takes about 30 minutes

1
Enter your email.

Free wrapper. Email confirms the download link, no account.

2
Download the ZIP.

Working Node.js app, README, sample inputs, reference outputs, the OSS-swap guide.

3
Run it locally in 30 minutes.

Follow the README. Ships with the Claude path wired. Swap to Llama whenever you want free.

Common questions