Accessibility
Accessibility
Every library at this address is meant to work with a keyboard, a screen reader or a phone held sideways. This page says what is built in across all three, where they differ, what falls short for now, and how to ask for an alternative format.
What is built in everywhere
Every page in every library has one heading structure with a single top-level heading, a skip link to the content and a visible focus outline. Diagrams are drawn into the page rather than loaded as images, and each carries a caption and an accessible name. Animation respects your reduced-motion setting: with it on, both the interface transitions and the animations inside diagrams stop. The revision tools, the flashcards, the checklist and the question practice can all be worked from the keyboard, and every question can be answered on paper and self-marked without the on-screen sketch box.
Where the libraries differ
Physics and maths publish equations three times over from one source: the drawn layer you see, a MathML twin a screen reader can walk through, and a plain-text line that copying yields. Biology has no equation layer because it has no equations to give one to.
The control that enlarges a figure into a dialog a keyboard can open, close with Escape and return from is on physics pages only. On maths and biology pages a browser's own zoom is the way to make a diagram bigger, which works but is not as good, and bringing the dialog to the other two is outstanding rather than declined.
Physics and maths have an account and an Android app; biology has neither, so nothing about signing in applies there.
Known limitations
The printable workbook and card-pack PDFs are generated files and their internal tagging is not yet at the standard of the web pages. The same content is always available as ordinary HTML on the topic pages, which is the accessible route today. Nobody has audited these libraries against WCAG to a published conformance level, so there is no badge on this page and there will not be one until there is something real behind it.
If a page, a figure or a download does not work with your setup, that is a defect rather than a policy, and we would like to know.
Another format, or a problem
Write to support@inkphysics.co.uk and say which page and what you need. Reports of anything unusable with a screen reader, keyboard or switch device get fixed with the same priority as a wrong answer.