What 400% Zoom Leaves Behind: An 82px Fixed Pixel Toll
A 320px reflow pass did not prevent severe vertical reading-space loss at short viewports. The loss was a fixed pixel cost, largely outside the application CSS.
Tags
Web Development
14 posts
CSS Cannot Hear Escape: Seven Tooltips Against SC 1.4.13
Seven tooltips, each measured against Dismissible, Hoverable and Persistent separately. Every CSS-only build fails Dismissible; popover="hint" fails Hoverable.
Chrome's agent skill: 138 guides, 2 on a11y, 0 on search
I counted the 138 guides in Chrome's Modern Web Guidance 0.0.180 and probed its search with 22 queries: UI 0.643, accessibility 0.508, structured data 0.267.
A 320px reflow test covers half of it: the 200px height at 400% zoom
WCAG 1.4.10 Reflow at three viewport heights: horizontal verdicts were identical. What 400% zoom changes is height. An 82px sticky header ate 41% of it.
I Widened Letter Spacing by 0.12em and 570 Elements Clipped
axe-core found zero WCAG 1.4.12 violations. Then I applied the four declarations the criterion asks for and 570 elements clipped. Which one does the damage.
axe-core vs W3C's ACT Answer Key: 37.5% of Failures Caught
W3C's ACT suite labels 1,213 HTML examples. axe-core caught only 145 of 387 failing ones under the matching criterion, and 22 of 36 criteria scored zero.
Zero Failures Tabbing Down, 16 Tabbing Up: Sticky Headers
Tabbing down six pages found zero WCAG 2.4.11 failures. Shift-Tabbing up the same pages found 16, because browsers align focus targets to the nearer edge.
Your Last Deploy Reset Every Cache Validator on the Site
A post untouched since October reports Last-Modified as yesterday. Its ETag is just file mtime and size in hex, so one deploy voids every 304 you could earn.
What a 26-page WCAG-EM sample missed in a 1,342-page build
W3C shipped WCAG-EM 2.0 in July 2026. I sampled 26 pages by its procedure, then swept the whole 1,342-page build. The sample caught one of four defect types.
I Authored Six of the Seven Places My Title Is Declared
Six title channels agreed across 1,296 pages. The seventh, inbound anchor text, matched the target heading on 0.7% of 18,296 links. One wrapper caused it.
24,948 of My 46,382 Internal Links Pointed at a 301
Across 1,334 pages, 24,948 of 46,382 internal links pointed at a slash-less URL that 301-redirects. The root cause, a four-stage fix, and the audit that hit zero.
What a div grid loses: a11y tree vs. text extraction
I built one opening-hours table four ways, then ran axe-core and five extractors over it. axe passed all four, yet three lost all 7 rows once HTML became text.
In sitemap.xml, lastmod Is the Only Field Google Actually Reads
Ship priority 1.0 with changefreq always and Google drops both. The only field it uses is lastmod, and only when verifiably accurate. I ran three sitemaps through the official XSD to see what really counts.
Tie Your JSON-LD Into One @graph Search and AI Can Read
My JSON-LD validated as three disconnected islands. Here's how @id references stitch Organization, WebSite, and Article into one @graph, measured with jsonld.