Code Review Focus Picker

A Code Review Focus Picker is a tool that randomly selects a specific aspect or area for you to concentrate on during your next code review. Instead of trying to check everything at once—which often leads to superficial reviews—this tool helps you go deep on one area at a time, making your reviews more thorough and effective over multiple sessions.

Humans naturally develop "review blindness"—we tend to look at the same things repeatedly (like naming conventions) while overlooking other critical areas (like security vulnerabilities or error handling edge cases). Randomizing your focus ensures comprehensive coverage and prevents habitual bias, leading to more well-rounded and effective code reviews.

This tool brings structure and variety to your reviews. By picking one focused aspect per review session (or per pull request), you systematically cover more ground. It also includes detailed tips for each aspect, guiding you on exactly what to look for. Over time, this builds muscle memory and makes you a more well-rounded reviewer who instinctively checks a broader range of issues.

The tool includes seven categories: Security (vulnerability checks, injection risks), Performance (query optimization, caching), Readability (naming, comments, structure), Maintainability (DRY, coupling, modularity), Error Handling (exceptions, fallbacks, logging), Architecture (design patterns, SOLID principles), and Testing (coverage, edge cases, mock usage). You can filter categories and even add your own custom aspects.

Yes! Use the "Add Custom Aspect" panel to create your own aspects with a category and an optional review tip. Custom aspects are saved in your browser's local storage, so they persist across sessions. This allows you to tailor the tool to your team's specific coding standards and recurring pain points.

A good practice is to pick a new focus for each pull request or each review session. For larger PRs, you might even pick 2-3 aspects to check. The key is consistency—using the tool regularly helps you build a habit of looking beyond the obvious. Some teams rotate focuses daily during their review cycles.

Yes. The tool automatically excludes recently picked aspects (up to 5) to ensure variety. You can also manually exclude any aspect using the "Exclude" button. Excluded aspects are shown as chips below the main card, and you can clear them anytime. If all available aspects are excluded, the exclusion list is automatically reset.

A regular code review often involves scanning for "anything that looks wrong," which is vague and inconsistent. A focused review means you deliberately concentrate on one dimension—like security or performance—and examine it deeply. This structured approach catches more nuanced issues and reduces the cognitive load of trying to evaluate everything simultaneously.

Share the tool link with your team and encourage each reviewer to pick a random focus before starting a review. You can also rotate focuses across team members—one person checks security, another checks performance, etc. For teams practicing pair reviews, each person can pick a different aspect and cross-check findings, creating a comprehensive review in a single session.