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Explain code line-by-line with persona modes, hallucination flagging, and security scanning.
An AI code explainer reads a piece of code and tells you what it does in plain English. Better ones explain why the code is structured a certain way, which patterns are used, and what could go wrong. The best ones adjust the explanation for your audience.
This explainer is the only free web tool with persona switching (5 audience modes), security scanning inline, hallucination flagging on referenced packages, accessibility mode for blind devs, and a private browser ghost mode for sensitive code.
Drop in any snippet. Single function, full file, or stack trace plus context. We auto-detect the language.
Beginner, Senior dev, Non-technical boss, Interview prep, or Teach a junior. The output adapts.
Hover any token to expand. Click any line for a deeper explanation. Share the explanation with a permalink.
Beginner, Senior, Non-tech boss, Interview prep, Teach a junior. Same code, right level for the reader.
Paste old + new code and get what changed and why. Cuts PR review time in half.
ReDoS, SQL injection, XSS, hardcoded secrets flagged inline with a one-line reason.
When the AI references an npm or PyPI package, we cross-check the registry. Real packages get a verified mark. Made-up ones get flagged red.
Paste an error trace plus surrounding code. The explainer pinpoints the line that caused the crash and suggests a fix.
Get the explanation in Spanish, Hindi, Arabic, Mandarin, and 30+ other languages. Code stays in English; explanation matches your reader.
Proper heading hierarchy, ARIA landmarks, skip anchors, plain-text fallback. Built for blind devs and dev educators.
Premium runs short explanations entirely in your browser. Sensitive code never leaves your device.
Copilot Chat caps free at 50 messages per month. We give you 10 per day. Most days that is enough for a small team.
Confidence badges show where the model is sure (Python, JS, Java) vs uncertain (COBOL, Verilog, niche frameworks). No fake confidence.
We never train on your code. Premium ghost mode runs locally. Lawyers, finance teams, and contractors can use it on client code.
The same explanation tweaked for a junior dev vs a senior architect vs your CFO. Saves you the rewrite.
Study mode quizzes you on the explanation. 'What happens if you change line 7 from < to <=?' Builds real understanding, not just copy-paste.
Beginner persona breaks down what each line does and why. Senior persona dives into design tradeoffs. Switch as you grow.
Non-technical boss persona translates dev work into business impact. Use it to brief stakeholders without becoming a translator.
Diff mode explains PRs faster. Security scan catches vulnerabilities before merge. Cuts review time in half.
Embed code explanations in docs. Multilingual output reaches global users. Accessibility mode covers all readers.
Inline vuln flagging with explanation. ReDoS detection. Hardcoded-secret detection. All in plain English.
How this explainer stacks up against Copilot Chat, Cursor, and Tabnine.
| Feature | Molixa | Copilot | Cursor | Tabnine |
|---|---|---|---|---|
| Web paste UX | Yes | No (editor only) | No (editor only) | No |
| Free daily limit | 10 explanations | 50 chats/month | 50 slow req/month | Trial only |
| Persona switching | 5 personas | No | No | No |
| Diff mode | Yes | Yes | Yes | No |
| Hallucination flagger | Yes | No | No | No |
| Security scan inline | Yes | Limited | No | Limited |
| Multilingual output | 30+ languages | Prompt only | Prompt only | Prompt only |
| Accessibility mode | Yes | No | No | No |
| Privacy / on-prem | Browser ghost mode | Enterprise only | Enterprise only | Best for enterprise |
Each persona is a different prompt template with its own vocabulary and depth. Beginner mode uses analogies and avoids jargon. Senior mode discusses tradeoffs and edge cases. Non-tech boss mode reframes everything in business impact.
When the AI references a package (npm, PyPI, crates), we hit the registry to verify it exists. Hallucinated packages get a red flag. Direct response to research that found 19.7% of LLM-suggested packages do not exist.
Python and JavaScript explanations get a high-confidence badge. COBOL, Verilog, Lean, Zig, and other niche languages get a low-confidence badge so you know to double-check. Honesty beats false certainty.
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The AI Code Explainer page is built, reviewed, and maintained by the Molixa team. We use the tool we ship and update the docs when the behavior changes.