Accessibility Progress

Our automated weekly check re-ran against the live site on 26 September 2026. Sign-in and registration still fit a 320-pixel-wide screen without sideways scrolling after the Google button reflow fix shipped on 14 September. Twenty-two of twenty-three public CourseHouse pages had no automated WCAG issues; the course builder has one small touch-target item under review.

Pages with no automated WCAG A/AA issues

22 of 23

Pages that fit a 320-pixel-wide screen (400% zoom) without sideways scrolling

23 of 23

ChemIllusion public pages with no automated issues in default (dark) mode

10 of 10

ChemIllusion home page in light mode

2 contrast items under review

What we verified

• The “Continue with Google” button still resizes with the page on sign-in and registration, so those routes remain at 22 of 22 with no sideways scrolling at 320 pixels wide (first fixed and published 14 September 2026).
• Every other public CourseHouse route still passes the 320-pixel reflow check.
• The course builder has one automated touch-target finding on a small inline link; we are enlarging it.
• On chemillusion.com, the home page in light mode has two contrast items we are reviewing; all other sampled public routes are clean.

Our automated checks now run every week against the live site rather than only before a release. This week’s run found no automated issues on 21 of the 22 public pages, and one real problem: on sign-in and registration, the “Continue with Google” button kept the width it was first drawn at, so those two pages scrolled sideways on a narrow screen.

Pages with no automated WCAG A/AA issues

21 of 22

Pages that fit a 320-pixel-wide screen (400% zoom) without sideways scrolling

22 of 22 (was 20)

Sampled pages with no automated issues in dark mode

4 of 5

What changed

• The “Continue with Google” button now resizes with the page, so sign-in and registration fit a 320-pixel-wide screen, or 400% zoom, without sideways scrolling. The button is supplied by Google and is drawn at a fixed width; we now redraw it when the space around it changes.
• Links inside paragraphs are underlined on our chemistry site too, matching the change CourseHouse made in September, so they no longer rely on color alone.
• Our weekly check now records which element on the page failed, so anything it finds on a Monday can be fixed the same week instead of waiting for someone to hunt for it.

We fixed all 12 issues from the baseline and re-ran the same checks against this release before publishing it. We also moved to a newer version of our automated checker (axe-core 4.10), which tests more WCAG 2.2 rules, and fixed what it found.

Pages with no automated WCAG A/AA issues

20 of 20 (was 12)

Pages that fit a 320-pixel-wide screen (400% zoom) without sideways scrolling

20 of 20 (was 13)

Sampled pages with no automated issues in dark mode

5 of 5 (was 4)

Pages with a descriptive title, page language, one main heading and a skip link

20 of 20

What changed

• Color contrast is higher on the catalog’s stage labels, hint buttons, the partial-credit label, transition-guide labels, gray helper text, and dark-mode table headings and links.
• Our gray text color is slightly darker, so gray text anywhere on CourseHouse now meets the contrast minimum on every light background.
• Form fields and checkboxes each have their own ID, so screen readers announce the right label.
• The catalog’s feature table tells screen readers “Included” or “Not included” instead of showing check marks with no text.
• Buttons and labels wrap on narrow screens, so no page needs sideways scrolling at 320 pixels wide or 400% zoom.
• The course builder’s timeline playhead and selected-chapter ring are darker in light mode and stand out against the timeline.
• Links inside paragraphs are underlined, so they no longer rely on color alone (found by the newer checker).
• Every CourseHouse page title now names CourseHouse.

We checked 20 public CourseHouse pages against WCAG 2.2 Level A and AA: the home page, the course builder, the catalog, pricing, open textbooks, rights and provenance, flipped-classroom lessons, the three transition guides, our four trust pages, contact, sign-in, registration and the sample textbook.

Pages with no automated WCAG A/AA issues

12 of 20

Pages with a descriptive title, page language, one main heading and a skip link

20 of 20

Pages that fit a 320-pixel-wide screen (400% zoom) without sideways scrolling

13 of 20

Sampled pages with no automated issues in dark mode

4 of 5

Reduced-motion setting respected (home page and course builder)

Yes

12 small fixes we identified

• Stage labels on the course catalog had too little color contrast.
• The “Get a hint” button on practice questions had too little color contrast.
• The “Partial credit” label in the assessment gallery had too little color contrast.
• A numeric-answer field shared an internal ID with its unit menu, which can confuse screen readers.
• Checkboxes on the “Tell us what you are building” form shared one internal ID.
• The “Transition guide” label on our three guides had too little color contrast.
• Some gray helper text sat just under the contrast minimum, including the “or” divider on sign-in and registration and the reader’s Advanced settings button.
• Table headings on the catalog were too faint in dark mode.
• “Preview — try it” links on the catalog were too faint in dark mode.
• The catalog’s feature comparison table showed its check marks only as images with no text, so screen readers read those cells as empty.
• Buttons and labels that could not wrap forced sideways scrolling on narrow screens or at 400% zoom on seven pages.
• In the course builder’s light mode, the timeline playhead and the ring around a selected chapter were too faint against the timeline.