Table 6 A list of the most commonly known accessibility problems for Achecker analysis
List of commonly known problems (Level AA) | Count | Category |
|---|---|---|
Element “B” or (bold) used | 494 | Perceivable |
Element “i” or italic used | 467 | Perceivable |
Image used as anchor is missing valid “alt” text | 70 | Perceivable |
Anchor contains no text | 53 | Operable |
Label text is empty | 31 | Understandable |
Element “img” missing “alt” attribute | 15 | Perceivable |
Input element type of “text” has no/missing associated label | 15 | Perceivable |
Input element type of “text” has no text in label | 12 | Perceivable |
Insufficient contrast between text color and its background | 7 | Perceivable |
Input element, type of “checkbox”, has no text in label | 6 | Perceivable |
Header nesting error | 5 | Operable |
Text area element missing an associated label | 5 | Perceivable |
Data table with more than one row/column of headers does not use id and headers attributes to identify cells | 5 | Perceivable |
Element selected missing an associated label | 4 | Perceivable |
Id attribute is not unique | 4 | Robust |
Input element, type of “checkbox”, missing an associated label | 4 | Perceivable |
On-mouseover event handler missing on-focus event handler | 1 | Operable |
Script not keyboard accessible—on-mouse-out missing on-blur | 1 | Operable |
Document language not identified | 1 | Understandable |
Document has invalid language code | 1 | Understandable |
Input element has alt attribute | 1 | Perceivable |
Right to left reading order not marked or marked incorrectly | 1 | Understandable |
Input element has more than one associated label | 1 | Perceivable |