PR Explainer doesn't just throw your diff at an LLM and hope for the best. It builds a context graph — resolving dependencies, tracing call sites, classifying changes by severity — so every tour and review references real code at verified line numbers. Narrated walkthroughs that explain what changed. Code review findings that flag what's wrong. Both grounded in actual code analysis, not guesswork.
How it works
Any PR, any size. Run "Explain PR" from the command palette.
A voice walks you through each change while the relevant lines light up. Pause, skip, or rewind.
See severity-graded findings inline while you listen. Actually understand what you're approving. Export as video for the rest of the team.
Features
Playback
The narration walks through each change while the relevant lines light up. No context switching, no re-reading diffs.
Code Review
Severity-graded findings — critical bugs, warnings, good practices — shown inline with gutter markers in the editor. Run reviews standalone or combined with narrated tours.
Export
Export tours as MP4 with captions. Reviewers watch the walkthrough before diving into the diff.
Detail Levels
Quick 30-second overview or a thorough file-by-file breakdown. You pick how deep to go.
Smart Caching
Tours are cached by content hash. Revisit a PR and it plays back instantly — no regeneration, no waiting.
Multiple Providers
Claude, GPT, Gemini — use whichever LLM you prefer. Managed mode picks the best available; local mode uses your own API keys.
Pricing
Want unlimited tours? Join the Pro waitlist
See it in action
Representative demo based on a real tour · Open in new tab ↗
Screen recording of a live tour in VS Code
Take back control of code review. Understand every change before you hit approve.
PR Explainer