Web Content Accessibility

Every form input must have a corresponding, explicitly associated <label> element so screen readers can announce what information is required. Placeholder text is not a substitute for a label. Ensure error messages are text-based, clear, and explain how to fix the issue.

Every image that conveys meaning must have descriptive alternative (alt) text. This allows screen readers to describe the visual content to users who are blind or have low vision. If an image is purely decorative, it should be marked as such (using an empty alt attribute, alt="") so screen readers can skip it.

Any multimedia embedded on your web pages must be accessible. Provide synchronized closed captions for all pre-recorded audio and video content. Captions benefit not only users who are deaf or hard of hearing, but also individuals watching in noisy environments or non-native language speakers.

Never rely on color alone as the only visual means to convey meaning, prompt a response, or distinguish a visual element. For example, if required form fields are highlighted in red, they must also include a text label or an asterisk so colorblind users can identify them.

Text and essential visual elements must stand out clearly against their background. Low contrast makes content unreadable for users with low vision or color vision deficiencies. Aim for a contrast ratio of at least 4.5:1 for standard text and 3:1 for large text and interface components.

Structure your content using proper heading tags (<h1>, <h2>, <h3>, etc.) in a logical, nested, sequential order. Do not skip heading levels (e.g., jumping from an H2 to an H4). Proper heading structure allows screen reader users to understand the page outline and jump directly to the sections they need.

Ensure that all interactive elements—like links, buttons, form fields, and menus—can be accessed and activated using only the Tab, Enter, Spacebar, and arrow keys. Provide clear, highly visible focus indicators (outlines) so users know exactly which element is currently active, and avoid trapping the user's keyboard focus within any specific component.

Link text should be descriptive and tell the user exactly where they are going, even when read out of context. Avoid vague phrases like "click here," "read more," or "learn more." Instead of "To view our policies, click here," use "View our accessibility policies."

Use your CMS or text editor's built-in tools for bulleted (<ul>) or numbered (<ol>) lists rather than manually typing dashes, asterisks, or numbers. Using proper semantic list tags ensures that screen readers announce the list properly and communicate exactly how many items it contains.

Avoid designing content that flashes more than three times per second, as this can trigger seizures. For any moving, blinking, scrolling, or auto-updating information (like carousels or background videos), provide a mechanism for the user to pause, stop, or hide it.

Write clearly and concisely. Avoid unnecessary jargon, complex sentence structures, and overly dense paragraphs. Plain language benefits all users, especially those with cognitive disabilities or those whose first language is not English.

Provide a "Skip to Main Content" link at the very top of the page. This allows keyboard and screen reader users to bypass repetitive navigation blocks that appear on every page and jump straight to the unique content.

Use HTML tables exclusively to present tabular data and relationships, never to control visual page layout. When creating data tables, designate clear row and column headers using the <th> tag so screen readers can associate data cells with their appropriate headers as a user navigates through the grid.

Write clean, valid HTML. Ensure that elements are nested correctly, do not contain duplicate IDs, and have complete start and end tags. Valid markup is crucial because assistive technologies rely on a predictable, well-structured Document Object Model (DOM) to parse and interpret your webpage accurately.