validator/validator

Nu Html Checker – Helps you catch problems in your HTML/CSS/SVG

JavaMIT

Pinned issues

self-closing tag report a warning

#1433 opened 2 years ago by pchampin

Closed22

file upload with validator.w3.org/nu times out (java.util.concurrent.TimeoutException: Idle timeout expired: 30000/30000 ms)

#1434 opened 2 years ago by rtonsing

Open7

Issues

non-deterministic parsing order makes replicating #1217 difficult
#1667 opened 10 days ago by stephen-huan
3
Error Code 429 - too many requests
#1715 opened a month ago by MatinF
2
OKLCH is not a "color" value
#1725 opened 13 days ago by jake9wi
0
misuse of aria-label
#1724 opened 15 days ago by Elgie007
0
support framework attributes
#1722 opened a month ago by PatrickJS
6
Element dialog is missing required attribute role
#1714 opened 2 months ago by kantoche
1
Nu Html Checker - Warning: Possible misuse of aria-label
#1687 opened 4 months ago by dave-d1
1
False positive on valid CSP `sandbox` values
#1720 opened a month ago by Seirdy
0
Bad value onion-location for attribute http-equiv on element meta.
#1719 opened a month ago by Troughy
1
Icon for "verified html"
#1701 opened 3 months ago by pvdv
2
Misunderstood language
#1717 opened a month ago by Codeweb1010
2
<a> must not appear as a descendant of <button>
#1718 opened a month ago by speedyhoon
0
Warnings about non supported, non global ARIA attributes use on ARIA roles
#1716 opened a month ago by spectranaut
0
No error when using ASCII upper alphas in Attribute Name for Custom Data Attributes
#1704 opened 3 months ago by taconasu
1
bad my compute
#1711 opened 2 months ago by ChwingumBird
0
Button with type="button" doesn't support role="combobox"
#1713 opened 2 months ago by admrwe
0
CSS text-wrap and shape-margin throwing validator errors
#1712 opened 2 months ago by redesigned
0
WordPress Gutenberg Block Library CSS incorrect validation
#1698 opened 3 months ago by umangbhanvadia-multidots
3
the XML syntax is not recommended
#1710 opened 2 months ago by mtrootyy
0
Add shadowrootserializable attribute to template element
#1709 opened 2 months ago by mtrootyy
0
Possible misuse of aria-label. (If you disagree with this warning
#1708 opened 2 months ago by juhilinksture
0
has parse error
#1678 opened 5 months ago by j212r
1
Add writingsuggestions attribute
#1703 opened 3 months ago by mtrootyy
0
No warning for validator
#1699 opened 3 months ago by zannager
2
Add "onpageswap" attribute to "body" element
#1697 opened 3 months ago by mtrootyy
0
Misidentified Language
#1679 opened 5 months ago by ChuckTerry
0
CSS being identified as html thus giving error
#1696 opened 3 months ago by Lfauzia
0
`<noscript>` invalid as direct descendant of `<body>`?
#1694 opened 3 months ago by doriantaylor
0
Why HTTP/1.0?
#1693 opened 4 months ago by catharsis71
1
Check for use of aria-hidden paired with hidden=until-found
#1692 opened 4 months ago by scottaohara
0
mailchimp aria-label
#1691 opened 4 months ago by Julius-88
1
Add shadowrootclonable attribute to template element
#1689 opened 4 months ago by mtrootyy
0
Ion icons
#1688 opened 4 months ago by engy-dev
0
confusing validator outcome
#1685 opened 4 months ago by Parker648
0
There's no head element, still it complains that it's missing the title element.
#1668 opened 4 months ago by tbytedev
6
Please make a new release / latest is over 3 years old
#1684 opened 4 months ago by hannob
0
@font-feature-values CSS at-rule incorrectly marked as an error.
#1683 opened 4 months ago by Electricz0
0
Validator is adding any empty lang tag and then marking it as an error - ignores the existing lang tag
#1681 opened 4 months ago by CorrineS
1
client tool does not report info message about trailing slash that online validator reports
#1682 opened 4 months ago by hannob
1
The "onpagereveal" attribute was added to "body" emelent
#1677 opened 5 months ago by mtrootyy
0
Missing </head> tag not detected
#1676 opened 5 months ago by tungxuando
1
Language misidentification
#1675 opened 5 months ago by Henrycaraballo
1
The pubdate attribute for time element should be valid
#1674 opened 5 months ago by CViniciusSDias
0
unable to access local website within dockerized validator
#1669 opened 6 months ago by modernNeo
1
Error: Bad value https:// for attribute value on element input: Invalid host: empty host.
#1666 opened 7 months ago by deadjdona
0
Language misidentified
#1665 opened 7 months ago by Reetha20
0
Consider adding warnings when a DL element contains duplicate DT names
#1662 opened 7 months ago by EricDunsworth
0
'rotate' CSS property incorrectly reported as 'doesn't exist'
#1661 opened 7 months ago by GitThingsDan
2
"Attribute `w3-include-html` not allowed on element div at this point."
#1658 opened 7 months ago by mig281
2
'shadowrootmode' & 'shadowrootdelegatesfocus' attribute were added to 'template' element
#1659 opened 7 months ago by mtrootyy
0