HTML Checking for Large Sites
Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator,
hosted on our own servers and integrated into our web crawler.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
<img> tags no longer accept a border attribute. This can be defined using CSS instead, for example:
<img src="..." alt="..." style="border:0;" />Related W3C validator issues
- An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
- Bad value “” for attribute “src” on element “img”: Must be non-empty.
- Bad value “X” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
- Bad value “X” for attribute “src” on element “img”: Illegal character in scheme data: space is not allowed.
- Bad value “X%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
- CSS: “background-image”: Parse Error.
- CSS: “filter”: "X" is not a “filter” value.
- CSS: “padding-top”: “-X” negative values are not allowed.
- CSS: Parse Error.
- CSS: “X”: Parse Error.
- Element “img” is missing required attribute “src”.
- The “align” attribute on the “td” element is obsolete. Use CSS instead.
- The “center” element is obsolete. Use CSS instead.
- The “valign” attribute on the “td” element is obsolete. Use CSS instead.
- The “width” attribute on the table (or td) element is obsolete. Use CSS instead.
- The “X” attribute on the “Y” element is obsolete. Use CSS instead.
- When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.