Table 8.
The WAVE Tool Error Analysis
| Error Type | Category | Guideline | Success Criteria | Websites affected | Frequency | Error % |
|---|---|---|---|---|---|---|
| Empty link | Operable | 2.4 | 2.4.4 Link Purpose | 12 | 195 | 42.76 |
| Missing alternative text | Perceivable | 1.1 | 1.1.1 Non-text Content | 12 | 79 | 17.32 |
| Linked image missing alternative text |
Perceivable Operable |
1.1 2.4 |
1.1.1 Non-text Content 2.4.4 Link Purpose |
9 | 65 | 14.25 |
| Broken ARIA reference |
Perceivable Robust |
1.3 4.1 |
1.3.1 Info and Relationships 4.1.2 Name, Role, Value |
4 | 37 | 8.11 |
| Empty button |
Perceivable Operable |
1.1 2.4 |
1.1.1 Non-text Content 2.4.4 Link Purpose |
10 | 26 | 5.70 |
| Missing form label | Perceivable | 1.3 | 1.3.1 Info and Relationships | 8 | 21 | 4.61 |
| Broken ARIA menu | Robust | 4.1 | 4.1.2 Name, Role, Value | 2 | 18 | 3.95 |
| Document language missing | Understandable | 3.1 | 3.1.1 Language of Page | 5 | 5 | 1.10 |
| Empty heading | Perceivable | 1.3 | 1.3.1 Info and Relationships | 3 | 5 | 1.10 |
| Marquee | Operable | 2.2 | 2.2.2 Pause, Stop, Hide | 1 | 2 | 0.44 |
| Image map area missing alternative text |
Perceivable Operable |
1.1 2.4 |
1.1.1 Non-text Content 2.4.4 Link Purpose |
1 | 1 | 0.22 |
| Image map missing alternative text | Perceivable | 1.1 | 1.1.1 Non-text Content | 1 | 1 | 0.22 |
| Missing or uninformative page title | Operable | 2.4 | 2.4.2 Page Titled | 1 | 1 | 0.22 |
| Total | 456 | 100 |