Note: The counts for categories are not accurate counts, but are based on estimates.
High priority
- Table tag that should be deleted (68 errors)
- Duplicate IDs (692 errors)
- Misnested tag with different rendering in HTML5 and HTML4 (32 errors)
- Miscellaneous issues (3 errors)
- Multiline table in list (8 errors)
- Multiple unclosed formatting tags (5 errors)
- Paragraph wrapping bug workaround (3 errors)
- Self-closed tags (37 errors)
- Old behaviour of link-wrapping font tags (41 errors)
- Whitespace parsing bug (0 errors)
- Unclosed quote in heading (0 errors)
Medium priority
- Bogus file options (141 errors)
- Fostered content (14 errors)
- Misnested tags (103 errors)
- Multi colon escape (28 errors)
- Links in links (29 errors)
Low priority
- Empty headings (54 errors)
- Missing end tag (237,614 errors)
- Missing end tag in heading (10 errors)
- Background color inline style rule exists without a corresponding text color (6,303,767 errors)
- Obsolete HTML tags (806 errors)
- Stripped tags (2,151 errors)