Accessibility
Accessibility describes the technical and structural design of websites so they remain usable for all users – regardless of assistive technology, input devices, or bandwidth. It is built on semantic HTML, clear information hierarchy, and the principle of Progressive Enhancement . Accessible websites simultaneously improve Indexing by search engines and the user experience for all visitors.
Why is this relevant?
Without accessibility, people using screen readers, keyboard navigation, or with limited perception lose access to content. At the same time, search engines benefit from clearly structured markup. Clean heading hierarchies, descriptive link texts, and stable DOM structures improve both user experience and Indexing .
Common mistakes and misconceptions
Accessibility is often only checked at the end of a project. In reality, it must be considered from the structure of navigation, forms, and layout onward. Hover-only menus, missing focus indicators, or JavaScript without fallbacks contradict the principle of Progressive Enhancement . Missing semantic markup also hinders Indexing by search engines.
How we use it
At BTECH Solutions, we implement accessibility from the very first component: every Angular template uses semantic HTML elements, ARIA labels, and visible focus indicators. Our Lighthouse audit workflow checks contrast values (minimum 4.5:1) and keyboard navigation before each Deployment . Through Server-Side Rendering , screen readers receive complete HTML immediately – without waiting for JavaScript rendering. The result: better WCAG 2.1 AA scores and simultaneously optimized Barrierefreiheit compliance.