usability.cat
Issue Wiki

Issue Wiki

The cat's encyclopedia of web issues — plain-English guides for every problem our scanner finds, with copy-paste fixes.

Welcome to the Issue Wiki. Every time the cat finds something wrong with your site, it links here so you can understand what the problem is, why it matters, and how to fix it — no web development degree required.

Browse by category

Accessibility

The cat checks whether everyone can use your site — including people who navigate with a keyboard, use screen readers, or have low vision. These fixes often have the biggest paw impact.

Can visitors actually find their way around? The cat looks for clear menus, proper page structure, and obvious calls-to-action.

Visual Design

First impressions matter. The cat spots inconsistent spacing, typography problems, and layouts that look unfinished or chaotic.

Forms

Forms are where your visitors convert into users. The cat checks for proper labels, validation feedback, and mobile-friendly inputs.

Content & Readability

Can people actually read your content? The cat flags tiny text, low contrast, and walls of text that scare visitors away.

Performance

Slow sites lose visitors. The cat checks for bloated DOM, missing optimizations, and render-blocking resources.

Mobile

Over half your visitors are on phones. The cat checks touch targets, viewport settings, and navigation that works with thumbs.

Security

The cat sniffs out exposed API keys, XSS vulnerabilities, missing CSRF protection, and other security issues hiding in your code.

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