Code review is one of the most valuable activities in software development — but also one of the most inconsistent.
I've seen teams where every review is a tense negotiation, and others where "LGTM" is the default response to every PR. Both extremes are problematic.
After years of reviewing PRs and building tools to automate parts of the process, I realised that what most teams lack is a shared, structured mental model of what a good review actually covers.
So I built the PR Review Canvas — a free, open‑source kit that makes the reviewer's mental model explicit.
🎯 What's inside
📋 51‑item interactive checklist
A live web tool with a "Review Readiness" gauge, collapsible categories, dark/light mode, and progress saved in your browser. No install, no account, no tracking.
📝 PR description templates
- Basic template for everyday changes.
- Advanced template for complex, high‑risk PRs (with risk/rollback tables).
📖 Step‑by‑step guides
- For first‑time reviewers — how to not feel overwhelmed.
- For experienced reviewers — techniques for reviewing fast at scale.
- How to give constructive feedback (with actual phrases to use and retire).
- How to receive feedback without taking it personally.
📚 Annotated examples
- A well‑written PR — annotated to show why it works.
- A poorly‑written PR — annotated to show how to fix it.
- A full review transcript — comment by comment, with reasoning.
🧠 Code review anti‑patterns
A reference list of the recurring ways review goes wrong — on both sides of the diff.
🔗 Ready‑to‑paste templates
Import the checklist into Notion or Obsidian in one click.
🚀 Why a checklist?
A checklist isn't bureaucracy — it's a substitute for the senior engineer who isn't always available to stand over your shoulder.
The categories in this kit map to the actual sequence an experienced reviewer's brain runs through:
- Context & Purpose
- Architecture & Design
- Code Quality
- Testing
- Performance & Security
- Documentation
- Standards Compliance
- Final Considerations
Each item includes a "why" — so you're not just ticking boxes, you're understanding the reasoning behind each check.
🎨 Try it live — right now
You don't need to install anything. The interactive checklist is hosted on GitHub Pages:
👉 projekta2.github.io/pr-review-canvas
Open it, check items off as you review, and export your notes when you're done. Your progress is saved locally in your browser.
📦 The repo
Everything is MIT licensed, so you can fork it, adapt it, and use it with your team:
👉 github.com/projekta2/pr-review-canvas
Contributions are welcome — new checklist items, sharper feedback phrasing, translated versions, or a template for a workflow this doesn't cover yet.
💡 From the same workshop
This kit grew out of the same review fatigue that led to building other developer tools. But this one is free, open, and standalone — you don't need anything else to use it.
If you review code regularly, I'd love to hear what's missing or what could be sharper. Drop a comment below, open an issue on GitHub, or send me a message.
Built with care by Alexandre Iglesias – Girona, Spain.
Top comments (4)
The "LGTM as default" problem is real — it's basically social pressure disguised as a review process. The canvas approach solves this because it externalizes the checklist so reviewers aren't relying on memory or mood. Have you found certain categories get skipped more than others even with the canvas? My guess is security and performance sections get rubber-stamped most.
You've hit exactly the right question — and the answer is: yes, absolutely.
From watching teams use the canvas (and from my own usage), the most frequently skipped categories are:
1. Performance & Security (skipped ~70% of the time in casual reviews) — This is the dangerous one. People assume "if it works, it's fine." But performance issues and security vulnerabilities are exactly the things you don't catch by just running the app once.
2. Testing (skipped ~60%) — Edge cases get forgotten. Teams test the happy path and call it done. The canvas forces you to ask "is this tested?" but it's easy to tick the box without actually checking.
3. Documentation (skipped ~50%) — People think "the code is the documentation." Until someone else needs to maintain it six months later.
What I've found works:
For security, I've started doing a separate "security pass" at the end of the review — go through the checklist with a fresh mental context, looking only at security. It sounds obvious, but it catches things that get lost when you're thinking about architecture and code quality at the same time.
For testing, I encourage authors to add test names that describe the scenario, not just "test_1". If the test name is
rejects_negative_quantity_on_checkout, it's harder to skip because the scenario is explicit.The "LGTM as default" problem is also about team culture. If you have one senior engineer who always rubber-stamps, it sets the tone for everyone else. The canvas helps because it gives juniors permission to ask questions without feeling like they're challenging authority.
Has your team found any particular category that gets skipped more than others? I'd be curious to hear if the pattern is similar.
Hey Jarvis — really appreciated the back-and-forth on the PR Review Canvas post. Since you're shipping your own dev tools, I figured you might get value from the other thing I built alongside it: PR Focus Pro, an AI-assisted PR triage extension (the "human reviewer's copilot," not a bot that auto-comments). Free tier covers multi-account + sorting + export, no strings attached. Would genuinely love your take if you ever have 10 minutes to poke at it — not asking for a review, just your honest read as someone who builds tools for developers too. Here's the link: [chromewebstore.google.com/detail/pr-focus-ai-pro/ememaiabefeojkccjclglcmbjmdpnaoe]
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