marlo Source
The numerator and the denominator

41 rules of 94

A coverage percentage with no denominator is the claim this whole project exists to argue with. So 94 sits next to every fraction here, including in the page title.

Every rule

Who reports it, and how Marlo's own version measured

"Reported by" is the router's pick from the calibration table. Where that is not Marlo, Marlo's rule measured worse and a better engine took it.

Filter by reporting engine
Marlo's own measurement per rule on the static renderer. Rules that need layout report as not evaluated, never as passing.
Rule Name Reported by Marlo P Marlo R Cases
047fe0 Document has heading for non-repeated content Marlo 1.000 0.750 14
09o5cg Text has enhanced contrast axe-core not measured not measured 29
23a2a8 Image has non-empty accessible name axe-core 1.000 0.800 18
24afc2 Important letter spacing in style attributes is wide enough Marlo 1.000 0.750 16
2779a5 HTML page has non-empty title axe-core 0.625 1.000 11
2ee8b8 Visible label is part of accessible name Marlo 1.000 1.000 13
36b590 Error message describes invalid form field value Marlo not measured 0.000 9
3ea0c8 Id attribute value is unique Marlo 1.000 1.000 10
46ca7f Element marked as decorative is not exposed Marlo 1.000 1.000 10
4e8ab6 Element with role attribute has required states and properties Marlo 1.000 1.000 8
59796f Image button has non-empty accessible name Marlo 1.000 1.000 12
5b7ae0 HTML page lang and xml:lang attributes have matching values Marlo 1.000 1.000 12
5c01ea ARIA state or property is permitted Alfa not measured 0.000 15
5f99a7 ARIA attribute is defined in WAI-ARIA Marlo 1.000 1.000 7
674b10 Role attribute has valid value Marlo 1.000 1.000 10
6a7281 ARIA state or property has valid value Alfa 0.909 1.000 24
6cfa84 Element with aria-hidden has no content in sequential focus navigation axe-core 0.750 1.000 14
78fd32 Important line height in style attributes is wide enough Marlo 1.000 0.833 21
7d6734 SVG element with explicit role has non-empty accessible name axe-core 1.000 0.750 10
8fc3b6 Object element rendering non-text content has non-empty accessible name axe-core 0.800 1.000 14
97a4e1 Button has non-empty accessible name axe-core 0.833 1.000 17
9e45ec Important word spacing in style attributes is wide enough Marlo 1.000 0.750 16
9eb3f6 Image filename is accessible name for image Marlo not measured 0.000 15
afw4f7 Text has minimum contrast axe-core not measured not measured 28
b40fd1 Document has a landmark with non-repeated content Marlo 1.000 1.000 8
b4f0c3 Meta viewport allows for zoom axe-core 0.750 0.750 11
b5c3f8 HTML page has lang attribute Marlo 1.000 1.000 7
bc4a75 ARIA required owned elements Alfa 0.600 0.429 19
bc659a Meta element has no refresh delay Alfa 1.000 0.500 15
bf051a HTML page lang attribute has valid language tag axe-core 0.500 0.250 7
bisz58 Meta element has no refresh delay (no exception) Alfa 1.000 0.500 14
c487ae Link has non-empty accessible name axe-core 1.000 0.273 28
cae760 Iframe element has non-empty accessible name axe-core 0.800 1.000 10
cf77f2 Bypass Blocks of Repeated Content Marlo not measured 0.000 14
de46e4 Element with lang attribute has valid language tag axe-core 0.600 0.667 19
e086e5 Form field has non-empty accessible name axe-core 0.750 0.429 17
e6952f Attribute is not duplicated Marlo not measured 0.000 10
e88epe Image not in the accessibility tree is decorative Marlo not measured 0.000 20
ff89c9 ARIA required context role Alfa 0.500 0.250 15
ffd0e9 Heading has non-empty accessible name axe-core 1.000 0.500 15
ye5d6e Document has an instrument to move focus to non-repeated content Marlo 1.000 0.333 12

That filter is radio inputs and a CSS :has() selector. There is no JavaScript on this site, so where :has() is unsupported every row stays visible, which is the right way round to fail.

Want a rule that is not on the list?

One file, one registry line, one fixture set. A rule that measures badly still gets merged, published with its real numbers, and routed to a better engine. The only kind that cannot be merged is one with no measurement at all.