Fixes by subject
All 432 techniques, filed the way you would look for them.
W3C files its techniques by the technology that implements them, so they arrive labelled G, F, H, ARIA, PDF and SCR. Nobody looks for technique G94. They look for how to write alt text. These are the same 432 guides sorted by subject instead, and a technique can belong to more than one subject, so the counts below add up to more than 432.
- 41 techniquesImages and alt textEvery image is either meaningful or decorative, and each needs the opposite treatment. These are the techniques for both.Browse the techniques →
- 59 techniquesForms and errorsEvery other accessibility failure costs somebody effort. A broken form costs them the whole task, and unlike a missing alt attribute you feel it in your numbers.Browse the techniques →
- 88 techniquesStructure and headingsHeadings are how most screen reader users get around a page, and 1.3.1 reaches a lot further than headings.Browse the techniques →
- 52 techniquesKeyboard and focusIf one check had to stand for all of accessibility, it is this one. Everything has to work without a mouse.Browse the techniques →
- 29 techniquesColour and contrastThe most-failed rule on the web. Also the one people are most confident a machine has already settled for them.Browse the techniques →
- 43 techniquesVideo, audio and mediaCaptions, transcripts and audio description are three different obligations, and almost everybody treats them as one.Browse the techniques →
- 32 techniquesLanguage and readabilitySetting the page language takes one attribute. Everything else here is about being understood the first time.Browse the techniques →
- 35 techniquesTiming and motionTime limits and moving content both take control away from the user. These techniques give it back.Browse the techniques →
- 53 techniquesZoom, reflow and spacingLow-vision users zoom. The thresholds are 200% for text and 400% for the page, and a layout that only holds together at 100% misses both.Browse the techniques →
- 60 techniquesLinks and navigationScreen reader users pull up a list of every link on the page. Whatever still makes sense in that list is what your link text is worth.Browse the techniques →
- 63 techniquesARIA and custom widgetsARIA changes what gets announced and adds no behavior of its own. Used well it makes a custom widget work. Used badly it lies with total confidence.Browse the techniques →
- 23 techniquesPDF and documentsA PDF carries no structure by default. These are the techniques that give it some.Browse the techniques →
- 38 techniquesScripting and dynamic contentContent that changes after load is where automated testing stops. A scan sees one state per page, and the bug is usually in the second one.Browse the techniques →
- 13 techniquesTables and dataA data cell that does not know its header is a number with no meaning attached.Browse the techniques →
The same library is filed two other ways. The full A to Z directory lists every technique by its W3C id, and the three technique types split them into sufficient, advisory and failure.