How To Audit Website Accessibility Compliance

Before running automated scans, you must establish a clear inventory of your website pages. A typical account with a large product catalog might start by auditing key templates like the homepage, product pages, contact forms, and checkout flows. Categorizing your pages helps you manage the workload effectively while ensuring that high-traffic areas receive priority. Once you have your list, use a combination of automated tools and manual checks to identify common issues like missing alt text or poor color contrast.

Automated tools serve as a helpful first layer to catch technical errors quickly. For example, browser extensions can scan individual pages to find missing form labels or incorrect heading structures. However, these tools often catch only about 30 percent of potential accessibility barriers. The remaining issues require human interaction to verify if the content makes sense when navigated via a keyboard or screen reader. A balanced approach ensures that you address both the technical code and the actual user experience.

Manual testing is the most reliable way to confirm that your site meets the needs of diverse users. Start by unplugging your mouse and navigating your site using only the Tab, Shift+Tab, Enter, and Spacebar keys. If you cannot reach a specific link, submit a form, or close a modal window using these keys, your site has a significant accessibility barrier. This simple test reveals how a keyboard-only user interacts with your digital architecture, highlighting areas that need better focus indicators.

Another critical manual task involves checking your text content for clarity and screen reader compatibility. Listen to your pages using a built-in screen reader like VoiceOver or NVDA to observe how it reads your headings and links. If the screen reader skips sections or reads navigation elements in an illogical order, you need to adjust your document object model (DOM) structure. Proper labeling of landmarks and regions ensures that users can easily skip to the content they actually want to read.

The Web Content Accessibility Guidelines (WCAG) provide the technical framework for all audits. Most professionals aim for level AA compliance, which covers a wide range of requirements for web content. These requirements include color contrast ratios, text resizing, and providing text alternatives for non-text content. Focusing on these standards helps you build a predictable experience across your entire digital presence, ensuring that users can rely on consistent site behavior.

• Contrast ratio: Ensure text has at least a 4.5:1 ratio against the background.
• Alt text: Provide descriptive text for every image used to convey information.
• Keyboard access: Ensure all interactive elements are reachable without a mouse.
• Heading structure: Use H1, H2, and H3 tags in a logical, hierarchical order.
• Form labels: Every input field must have an explicit label for screen reader clarity.

Automated tools are excellent for identifying errors that follow strict rules, but they cannot replace human judgment. For instance, a tool can check if an image has an alt tag, but it cannot determine if the text in that tag is actually meaningful or relevant to the image content. Relying solely on automation often leaves major usability gaps. You must use tools to find the low-hanging fruit, then follow up with manual human testing to ensure the site is truly functional for all visitors.

Many developers use browser-based scanners that provide a percentage score. While these scores are useful for tracking improvement, they should not be treated as a final certification. A site might achieve a high automated score while still being difficult to use for people with motor impairments. Always prioritize the actual flow and logic of the user interface over the raw percentage points provided by software. A functional, accessible site is one where every user reaches their goal without frustration.

Effective auditing requires a clear system for logging issues and tracking their resolution. We recommend using a spreadsheet or a dedicated project management tool where you can record the URL of the issue, the specific WCAG success criterion affected, the severity level, and a link to the fix. Tracking these details helps you explain the progress to stakeholders and ensures that no reported issue is forgotten during the development process. Consistent documentation makes it easier to conduct future audits, as you already have a history of past changes.

• Issue ID: Assign a unique number to each accessibility bug.
• Page location: Note the exact URL where the issue occurred.
• WCAG Reference: Link the issue to the specific standard it violates.
• Priority: Label items as high, medium, or low based on user impact.
• Status: Track whether the fix is in progress, tested, or deployed.