Accessibility Statement

Given voluntarily for yiquan.wiki. Last updated: 27 September 2026.

This website is a private, non-commercial project. There is no legal obligation here to make it accessible — neither under the German accessibility regulation for public bodies (BITV 2.0) nor under the Accessibility Strengthening Act (BFSG), which addresses economic operators. This statement is therefore given voluntarily. It nevertheless follows the structure familiar from official statements, because the point is the same: you should know what you can rely on here — and what you cannot.

Scope

This statement applies to the website yiquan.wiki and all its pages, in both the German and the English version.

Conformance status

By the operator's own assessment the website is largely conformant with the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA. “Largely” means: the automated audit reports no violations, and the points that are nevertheless open are named below. It does not mean the site is free of faults.

Standard applied and method of assessment

The site was assessed against WCAG 2.2 level AA — the same yardstick the European standard EN 301 549 builds on. The method:

• Automated with axe-core 4.12 across the rule sets for WCAG 2.0, 2.1 and 2.2 (levels A and AA). Every page of the site was covered, in both the German and the English version, each in the light and the dark design. Result: no violations.
• By hand, because tools cannot see most of it: keyboard-only operation, focus visibility at every stop, zoom to 400 % at a 320 px window width, Windows contrast mode, and spot checks of the browser's accessibility tree.
• By calculation for the colours: every value was checked against every surface it appears on, not merely the most common one. Body text reaches at least 4.5:1, controls and the focus ring at least 3:1. The colours live in exactly one place in the project, and a checking script recomputes every pairing on each change — it fails as soon as a threshold is missed.

Limitations of the method: the assessment was carried out by the operator, not by an independent body. There has been no test with people who use a screen reader or another assistive technology day to day. Such tests reliably surface things no checklist covers.

What you can rely on

• The entire site can be operated by keyboard; the focus is visible at every point.
• Under Adjust the display on the start page you can set text size (up to 150 %), contrast, motion, line spacing, read-aloud and the audio cues. Your choice is remembered and applies across the whole site.
• Read aloud puts a button on every article that reads it out using the operating system’s voice and then continues into the next article; the paragraph currently being spoken is highlighted. The speech rate setting applies to it as well. It stays off until someone turns it on — anyone using a screen reader should not hear two voices at once. Reading stops on Esc or on a click anywhere on the page, with any mouse button; only the read-aloud buttons, the transport bar and Adjust the display are exempt.
• The read-aloud buttons grow to five times their size under the pointer and on keyboard focus — in running text they are otherwise barely 15 pixels across.
• The audio cues give the same orientation for the ear, in two steps. Tone is a sonar on the read-aloud buttons: as the pointer approaches one it pings, faster and higher the closer it gets, turning into a continuous tone on the button itself. Tone + speech additionally says what lies under the pointer — menu items, headings, controls — and only after a brief pause, so that sweeping across the navigation does not produce a cascade of half-started words. While an article is being read aloud the announcements stay silent; they would cut it off. Both require Read aloud: On and are off by default — sound that starts by itself has to be switchable.
• The Contrast: High setting switches the site to yellow on deep black — in both themes; the light or dark design you chose steps back there. Body text in pure yellow (19.6:1), headings, links and the brand mark in white (21:1); the knowledge graph keeps four distinguishable signal colours, as its legend would otherwise be worthless. All text values exceed 7:1 (WCAG AAA).
• System settings are honoured: reduced motion, increased contrast, Windows contrast mode, and the default text size set in your browser.
• Zooming to 400 % produces no horizontal scrolling.
• The knowledge graph and the lineage tree are additionally available as a complete text list below each graphic — with every node, connection and lineage relation.
• Chinese terms are marked up as Chinese and are therefore spoken with a Chinese voice by your screen reader; each also has a pronunciation recording. The transliteration beside them is a reading aid for the eye and is deliberately not spoken. The site’s read-aloud function skips both: a German or English voice makes nothing useful of Chinese characters, and for the pronunciation there is a dedicated button beside each term.
• Tables have associated column headers and a caption naming their subject.
• The search can be operated with the arrow keys and announces the number of matches.
• The site embeds no third-party content — with one exception: the music page loads YouTube, but only after an explicit click. There are no PDFs or other documents for download.

Known limitations

• The knowledge graph and the lineage tree can only be explored with a mouse (dragging, zooming, hovering over nodes). Their content is available in full as a text list underneath, but the visual exploration itself cannot be done by keyboard.
• The interactive explainer pages (concept analogies) print their state as text, but do not announce a change to the screen reader on their own — you have to move to the text again.
• The Adjust the display panel exists only on the start page. The settings chosen there take effect on every page, but they can only be changed there.
• The read-aloud function exists only on the start page, because that is where the articles are. It uses the operating system’s voice — how good it sounds is therefore not up to this site. On Linux it is often missing altogether; in that case the read-aloud buttons stay inert and say so.
• Within search result snippets, Chinese characters are not marked up as Chinese; in the running text of the pages they are.
• The Chinese language version is prepared technically but has no content yet.

These points are known, not forgotten. They are listed here so that you do not have to stumble over them first.

Feedback

Did you run into something you could not operate? Please write to me — small things included. It helps if you mention which page it concerned, what you were trying to do and with what (browser, screen reader, magnification).

E-mail: loading …

This is one person's after-hours project — I answer as quickly as I can, but cannot promise a deadline.

About this statement

Created on 12 August 2026, last updated on 27 September 2026, on the basis of the operator's own assessment described above. It is updated whenever something changes on the site that is stated here.