WCAG 2.1 Accessibility Checklist

All meaningful images have descriptive alt text that conveys the content and function of the image.

WCAG 1.1.1

Images that are purely decorative have empty alt attributes (alt="") so screen readers skip them.

WCAG 1.1.1

Charts, graphs, and infographics have detailed text descriptions of the data they present.

WCAG 1.1.1

All pre-recorded video content has synchronized captions for dialogue and important sounds.

WCAG 1.2.2

Videos have audio descriptions of important visual content not conveyed through dialogue.

WCAG 1.2.5

Pre-recorded audio content has text transcripts available.

WCAG 1.2.1

Normal text has at least 4.5:1 contrast ratio against its background.

WCAG 1.4.3

Large text (18pt+ or 14pt+ bold) has at least 3:1 contrast ratio.

WCAG 1.4.3

Interactive elements and their states have at least 3:1 contrast ratio.

WCAG 1.4.11

Information conveyed by color is also conveyed through text, patterns, or other means.

WCAG 1.4.1

All form inputs have visible labels that are programmatically associated with the input.

WCAG 1.3.1

Required fields are indicated in the label, not just with color or an asterisk.

WCAG 3.3.2

When errors occur, messages identify the field and describe how to fix the error.

WCAG 3.3.1

Error messages are announced to screen readers when they appear.

WCAG 4.1.3

Common inputs (name, email, phone) have autocomplete attributes to aid autofill.

WCAG 1.3.5

Complex forms provide instructions before the form or at the relevant fields.

WCAG 3.3.2

Every interactive element can be reached and operated using only a keyboard.

WCAG 2.1.1

Users can navigate away from any element using standard keyboard commands.

WCAG 2.1.2

Keyboard focus is clearly visible on all interactive elements.

WCAG 2.4.7

Tab order follows the visual layout and makes logical sense.

WCAG 2.4.3

A skip navigation link allows users to bypass repetitive content.

WCAG 2.4.1

Focused elements are not hidden behind sticky headers or overlays.

WCAG 2.4.11

Every page has a unique, descriptive title that identifies the page content.

WCAG 2.4.2

Headings (H1-H6) are used in logical order without skipping levels.

WCAG 1.3.1

Lists use ul, ol, or dl elements rather than just formatted text.

WCAG 1.3.1

Data tables have header cells (th) that are associated with data cells.

WCAG 1.3.1

ARIA landmarks or HTML5 elements (main, nav, footer) identify page regions.

WCAG 1.3.1

The page language is set in the HTML lang attribute.

WCAG 3.1.1

Links describe their destination, not just "click here" or "read more".

WCAG 2.4.4

Buttons have visible text or accessible names that describe their action.

WCAG 4.1.2

Links are visually distinct from surrounding text (not just by color).

WCAG 1.4.1

Links that open in new windows/tabs indicate this behavior.

WCAG 3.2.5

Text can be resized up to 200% without loss of content or functionality.

WCAG 1.4.4

Content adapts to 320px width without horizontal scrolling.

WCAG 1.4.10

Increasing line height, letter spacing, and word spacing doesn't break content.

WCAG 1.4.12

Text is not presented as images (except for logos).

WCAG 1.4.5

Users can turn off, adjust, or extend time limits (with some exceptions).

WCAG 2.2.1

Moving, blinking, or auto-updating content can be paused or stopped.

WCAG 2.2.2

Nothing flashes more than 3 times per second.

WCAG 2.3.1

Animations triggered by interaction can be disabled unless essential.

WCAG 2.3.3