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Dataset 20260827-2142-2f1b575 · measured 2026-08-27 21:42 UTC
The parser accepts the name, yet our rendering is byte-identical with and without the declaration while Chrome's is not. The declaration is being swallowed.
Each example is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
translate:20px 50%✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:50%✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px 20px✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px 20px 20px✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px 40%✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:40%✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px 20px 4px✓pixel-exact
Our renderChromeIdentical to Chrome: nothing differs, so there is no difference map to show.
translate:20px calc(40% + 20px)✕parsed, no effect
Our renderChrome29,280 pixels differ from Chrome, the largest by 204 of 255 on one channel.
translate:calc(40% + 20px)✕parsed, no effect
Our renderChrome24,000 pixels differ from Chrome, the largest by 204 of 255 on one channel.
translate:20px 20px calc(20px + 4px)✕parsed, no effect
Our renderChrome12,000 pixels differ from Chrome, the largest by 204 of 255 on one channel.
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 6 branches; 5 of them carry a measurement. The publishing ceiling is 12 examples per property — a branch past it is left out by our choice, not by accident.
| Value | Measured |
|---|---|
| 20px | ✓pixel-exact |
| 50% | ✕parsed, no effect |
| 20px 20px | ✓pixel-exact |
| 20px 50% | ✕parsed, no effect |
| 20px 20px 20px | ✕parsed, no effect |
| none | not measured |
Secondary evidence: 5 Web Platform Tests carry a spec anchor pointing at this property. Only 1,254 tests in the whole corpus carry such an anchor, so an empty list here means nothing at all.
Measured against Chrome 148.0.7778.96 on 2026-08-27, with up to 40 candidate values tried per property. All properties · How the measurement works