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.
Bad value “X” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Space characters are not allowed in src attributes. Instead, they should be converted to %20. In this example, the first line is invalid and the second is valid:
<img src="https://example.com/?s=some term" alt="description" />
<img src="https://example.com/?s=some%20term" alt="description" />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 “accept” on element “input”: Expected a token character or “/” but saw “,” instead.
- Bad value “X” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
- Bad value “X” for attribute “href” on element “a”: Illegal character in query: 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.
- Element “img” is missing required attribute “src”.
- Element name “X” cannot be represented as XML 1.0.
- Internal encoding declaration “windows-1251” disagrees with the actual encoding of the document (“utf-8”).
- Text run is not in Unicode Normalization Form C.
- The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
- When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.