Accessibility statement

We want every student and reader to be able to use VALREXA, including people who use screen readers, keyboards, magnification or other assistive technology.

Our goal

VALREXA aims to conform to the Web Content Accessibility Guidelines (WCAG) 2.1, Level AA, the standard most U.S. colleges and universities use when choosing digital course materials.

What we do

Readable text: body text and links meet WCAG AA color contrast, and pages can be zoomed to 200% without losing content.
Keyboard access: menus, drop-downs, flashcards, quizzes, the practice generator and other tools can be used with a keyboard, with a visible focus outline. A “Skip to content” link is available on every page.
Screen readers: pages use proper headings, labeled search boxes and form fields, page language settings, and text descriptions for images and molecule models.
Mobile: every page adapts to phone and tablet screens without sideways scrolling.
Plain language: we write for clarity and define technical terms in our glossary.
Printing: study pages print cleanly, and the amino acid chart is available as a PDF.

Known limitations

Interactive charts and 3D molecule models are visual. The key numbers they show, such as pKa values, pI and molecular weight, are also given as text on the same page.
Some VALREXA Originals videos do not yet have captions. We are adding them.
Embedded videos from other organizations and linked external sites are outside our control.

How we check

We test pages with automated accessibility checks (images, labels, link names, headings and contrast), keyboard-only navigation and mobile screen sizes, and we review new tools before they are published.

Report a problem

If anything on VALREXA is hard to use, or you need content in another format, please tell us. Email contact@valrexa.com or call (863) 280-2616, Monday to Friday, 9 AM to 5 PM ET. We aim to respond within 2 business days.

Last reviewed November 2026.