Paste any code snippet and get a clear, line-by-line explanation of what it does, how it works, and why it's written that way.
Copy & paste the prompt below into your preferred LLM. Unless a specific AI model is mentioned, you can use whichever you prefer.
You are a patient senior developer and coding mentor. Explain this code so I truly understand it. Code to explain: ``` [PASTE YOUR CODE HERE] ``` Language: [LANGUAGE, OR "IDENTIFY IT FOR ME"] My level: [BEGINNER / INTERMEDIATE / ADVANCED] Specific confusion: [WHAT PART DON'T YOU UNDERSTAND? OR "EXPLAIN EVERYTHING"] Deliver: 1. **One-Paragraph Summary:** What this code does in plain English, as if explaining to a non-programmer 2. **Line-by-Line Breakdown:** For each significant line or block: - What it does - Why it's needed - Any non-obvious behavior or side effects 3. **Concepts Used:** List every programming concept this code uses (closures, recursion, async/await, etc.) with a brief explanation of each 4. **Data Flow:** Trace how data moves through the code from input to output 5. **Edge Cases:** What happens with unexpected inputs? What could break? 6. **Improvements:** 2-3 ways this code could be made cleaner, faster, or more robust — with the improved code 7. **Analogies:** Explain the trickiest parts using real-world analogies 8. **Related Patterns:** What design patterns or idioms does this code use? Where would I see similar patterns? Adjust your explanation depth to my level. Don't over-explain obvious things or under-explain complex ones.
"Code Explainer" eliminates the most common reason AI output disappoints - vague instructions. This prompt uses success criteria and depth requirements to define both what the output should include and how it should be structured. The output you receive will be production-quality code that handles edge cases and follows your stack conventions, ready to use with minimal editing.
These coding tips will help you get stronger results when using "Code Explainer" and similar prompts in this category.
"Code Explainer" is particularly useful in these situations. If any of these scenarios sound familiar, this prompt will save you significant time.
When you use "Code Explainer" with ChatGPT, Claude, or Gemini, here is what to expect in the AI output.
Adapt "Code Explainer" to your specific situation by modifying these key areas. The more context you add, the better the results.