About this tool
Paste code and understand what it does, line by line.
Free AI code explainer. Paste any code and understand what it does line by line.
How to use Explain code with AI
-
1
Type or upload
Type what you want in the box above — or upload the file if the tool asks for one.
-
2
Generate
Click the main button. Wait 2-30 seconds depending on the model and input size.
-
3
Download or share
Download the result or share the direct link. No watermark, ready to use.
Frequently asked questions
What languages does Explain Code with AI support?
Explain Code with AI handles all mainstream languages: Python, JavaScript / TypeScript, Java, C / C++, Rust, Go, Swift, Kotlin, PHP, Ruby, SQL, Bash, R. Also frameworks (React, Vue, Django, Spring) and formats like Dockerfile, YAML, JSON, GraphQL, Terraform.
Does Explain Code with AI work with entire repos or just snippets?
Explain Code with AI accepts full files pasted or multiple functions at once. Models with large context (Qwen3 Coder with 262K tokens, Gemini 2.5 Pro with 1M, Claude Sonnet 4) can load entire modules, for full repositories client them in context or work on the relevant files.
Is the code generated by Explain Code with AI safe to use?
Explaining code with AI produces reasonable code, but it does NOT replace human review. Review any code before merging: AIs occasionally invent functions that do not exist, use deprecated APIs, or introduce subtle vulnerabilities (SQL injection, secrets in logs, race conditions).
Does Explain Code with AI use my code to train models?
No, the code you paste into Explain Code with AI travels to the model provider (Anthropic, OpenAI, etc.) under our corporate account, not associated with you, and not used for training. For code under strict NDA, we recommend using open-weight models (Llama, Qwen) — they run without sending anything to the original provider.
Can I integrate Explain Code with AI into my editor or CI?
Yes, the REST API returns the code in JSON ready to embed — useful for pre-commit hooks, CI agents, or editor extensions. Your API token bearer is in /api/; tokens are discounted just like on the web.