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conformance · v139

v139 · support-font-feature-settings-descriptor-in-font-face-rule — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://www.w3.org/TR/css-fonts-4/#font-rend-desc chromestatus: #5102801981800448 generated 2026-06-05T08:25:30Z by manual-codex-devtools
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id contract kind verdict detail
font-feature-settings-descriptor-via-cssom CSSOM keeps valid font-feature-settings descriptors attached to @font-face rules. spec ↗ script
font-feature-settings-normal-descriptor The descriptor accepts the normal keyword inside @font-face. spec ↗ script
font-feature-settings-off-normalization The descriptor normalizes an off feature value to its numeric disabled value. spec ↗ script
invalid-feature-tag-dropped Malformed OpenType feature tags are rejected rather than retained on @font-face rules. spec ↗ script
css-font-face-rule-exposed CSSFontFaceRule is exposed as the CSSOM type backing @font-face descriptor rules. typeof
descriptor-can-live-without-element-property A font-feature-settings descriptor can live on the font family while matching elements omit the element-level property. spec ↗ script