Rules by WCAG Guidelines

Guideline 1.1 Text Alternatives

Success Criterion 1.1.1 Non-text Content

Rule ID	Summary	Level	Conformance	Scope	Result Values
Image 1	Images must have alt text	A	Required	Element	F		P	H
Image 2	Alt text must summarize purpose	A	Required	Element		MC		H
Image 3	Alt text must not include filename	A	Required	Element	F		P	H
Image 4	Alt text no more than 100 characters	A	Required	Element		MC	P	H
Image 5	Image is decorative	A	Required	Element		MC		H
Image 6	Long description for complex images	A	Required	Element	F	MC		H
Image 7	Use MathJax for mathematical expressions	A	Required	Element		MC		H

Guideline 1.2 Time-based Media

Success Criterion 1.2.1 Audio-only and Video-only (Prerecorded)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Audio 1	Audio-only (Prerecorded)	A	Required	Element	F	MC	P	H
Video 1	Video-only (Prerecorded)	A	Required	Element		MC	P	H

Success Criterion 1.2.2 Captions (Prerecorded)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Video 2	Captions (Prerecorded)	A	Required	Element		MC	P	H

Success Criterion 1.2.3 Audio Description or Media Alternative (Prerecorded)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Video 3	Audio Description or Media Alternative (Prerecorded)	A	Required	Element		MC	P	H

Success Criterion 1.2.4 Captions (Live)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Video 4	Captions (Live)	AA	Required	Element		MC	P	H

Success Criterion 1.2.5 Audio Description (Prerecorded)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Video 5	Audio Description (Prerecorded)	AA	Required	Element		MC	P	H

Guideline 1.3 Adaptable

Success Criterion 1.3.1 Info and Relationships

Rule ID	Summary	Level	Conformance	Scope	Result Values
Heading 5	Headings must be properly nested	A	Recommended	Page	F	MC	P	H
Heading 6	Headings should have text content	A	Recommended	Element	F		P	H
Heading 7	First landmark heading h2	A	Recommended	Element	F		P	H
Landmark 2	All content must be contained in landmarks	A	Required	Element	F	MC	P	H
Landmark 8	banner landmark: must be top-level	A	Recommended	Element	F		P	H
Landmark 9	banner landmark: restrictions	A	Required	Element	F		P	H
Landmark 10	navigation landmark: restrictions	A	Required	Element	F		P	H
Landmark 11	main landmark: must be top-level	A	Required	Element	F		P	H
Landmark 12	contentinfo landmark: must be top-level	A	Required	Element	F		P	H
Landmark 13	contentinfo landmark: restrictions	A	Required	Element	F		P	H
Landmark 14	search landmark: restrictions	A	Required	Element	F		P	H
Landmark 15	form landmark: restrictions	A	Required	Element	F		P	H
Landmark 16	region landmark must have accessible name	A	Required	Element		MC	P	H
Landmark 17	Landmarks must be uniquely identifiable	A	Required	Element	F		P	H
Landmark 18	Landmarks must identify content regions	A	Required	Element		MC		H
Landmark 19	complementary landmark: must be top level	A	Recommended	Element	F		P	H
List 1	Use semantic markup for lists	A	Required	Page		MC		H
Table 1	Data cells must have row/column headers	A	Required	Element	F	MC	P	H
Table 3	Data tables may have description	A	Required	Element		MC	P	H
Table 4	Data tables should have unique names	A	Required	Element	F		P	H
Table 5	Identify table markup as data or layout	A	Required	Element	F	MC	P	H
Table 6	Header cells should be th elements	A	Recommended	Element	F		P	H
Table 7	Data cells must use headers attribute	A	Required	Element	F		P	H
Table 8	Name must be different than description	A	Required	Element	F	MC	P	H

Success Criterion 1.3.2 Meaningful Sequence

Rule ID	Summary	Level	Conformance	Scope	Result Values
Layout 1	Layout tables must have meaningful sequence	A	Required	Page		MC	P	H
Layout 2	Do not nest layout tables	A	Required	Element	F		P	H
Layout 3	aria-flowto changes reading order	A	Required	Element		MC		H
Order 1	Reading order: CSS positioning	A	Required	Element		MC		H

Success Criterion 1.3.3 Sensory Characteristics

Rule ID	Summary	Level	Conformance	Scope	Result Values
Sensory 1	Not only shape, size and location	A	Required	Page		MC

Success Criterion 1.3.4 Orientation (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Layout 4	Do not restrict view or operation.	AA	Required	Page		MC

Success Criterion 1.3.5 Identify Input Purpose (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 13	name attribute supports auto fill	AA	Required	Element		MC	P	H

Guideline 1.4 Distinguishable

Success Criterion 1.4.1 Use of Color

Rule ID	Summary	Level	Conformance	Scope	Result Values
Color 2	Use of color	A	Required	Page		MC

Success Criterion 1.4.2 Audio Control

Rule ID	Summary	Level	Conformance	Scope	Result Values
Audio 2	Audio Control	A	Required	Page		MC

Success Criterion 1.4.3 Contrast (Minimum)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Color 1	Color contrast of text: Minimum	AA	Required	Element	F	MC	P	H

Success Criterion 1.4.4 Resize text

Rule ID	Summary	Level	Conformance	Scope	Result Values
Resize 1	Resize text content	AA	Required	Page		MC

Success Criterion 1.4.5 Images of Text

Rule ID	Summary	Level	Conformance	Scope	Result Values
no rules at this time

Success Criterion 1.4.6 Contrast (Enhanced)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Color 3	Color contrast of text: Enhanced	AAA	Recommended	Element	F	MC	P	H

Success Criterion 1.4.10 Reflow (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Resize 2	Support small screen dimensions	AA	Required	Page		MC

Success Criterion 1.4.11 Non-text Contrast (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Color 4	Color contrast of user interface controls	AA	Required	Element		MC		H
Color 5	Color contrast of graphics	AA	Required	Element		MC		H

Success Criterion 1.4.12 Text Spacing (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Spacing 1	Text Spacing	AA	Required	Page		MC

Success Criterion 1.4.13 Content on Hover or Focus (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 7	Content on Hover or Focus	AA	Required	Page		MC

Guideline 2.1 Keyboard Accessible

Success Criterion 2.1.1 Keyboard

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 1	ARIA widget keyboard support	A	Required	Element		MC		H
Widget 15	Closed shadow DOM requires manual check.	A	Required	Element		MC		H

Success Criterion 2.1.2 No Keyboard Trap

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 3	No keyboard trap	A	Required	Element		MC		H
Keyboard 4	Avoid tabindex > 0	A	Required	Element		MC		H

Success Criterion 2.1.4 Character Key Shortcuts (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Shortcut 1	Character Key Shortcuts	A	Required	Page		MC
Shortcut 2	Avoid using accesskey for shortcuts	A	Required	Element		MC		H

Guideline 2.2 Enough Time

Success Criterion 2.2.1 Timing Adjustable

Rule ID	Summary	Level	Conformance	Scope	Result Values
Timing 1	Control time limits	A	Required	Page		MC

Success Criterion 2.2.2 Pause, Stop, Hide

Rule ID	Summary	Level	Conformance	Scope	Result Values
Timing 2	Control moving, blinking or auto-updating content	A	Required	Page		MC		H

Guideline 2.3 Seizures and Physical Reactions

Success Criterion 2.3.1 Three Flashes or Below Threshold

Rule ID	Summary	Level	Conformance	Scope	Result Values
HTML 1	Replace marquee elements	A	Required	Element	F			H
Timing 3	Flashing limits	A	Required	Page		MC		H

Guideline 2.4 Navigable

Success Criterion 2.4.1 Bypass Blocks

Rule ID	Summary	Level	Conformance	Scope	Result Values
Bypass 1	Skip to main content link	A	Required	Page	F	MC	P
Frame 1	frame must have accessible name	A	Required	Element	F	MC	P	H
Frame 2	iframe must have accessible name	A	Required	Element	F	MC	P	H
Heading 1	Page should have h1 element	A	Recommended	Page	F		P	H
Landmark 1	main landmark: at least one	A	Required	Page	F		P	H
Landmark 3	navigation landmark: at least one	A	Required	Website	F		P	H
Landmark 4	banner landmark: identifies branding content	A	Required	Page		MC	P	H
Landmark 5	banner landmark: no more than one	A	Required	Page	F		P	H
Landmark 6	contentinfo landmark: identifies admin content	A	Required	Page		MC	P	H
Landmark 7	contentinfo landmark: no more than one	A	Required	Page	F		P	H

Success Criterion 2.4.2 Page Titled

Rule ID	Summary	Level	Conformance	Scope	Result Values
Title 1	title must identify website and page	A	Required	Page	F	MC
Title 2	h1 must match part of the title	A	Required	Page	F	MC	P	H

Success Criterion 2.4.3 Focus Order

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 2	Sequential tab order of focusable elements must be meaningful	A	Required	Page		MC	P	H
Keyboard 8	Focus Order	A	Required	Page		MC

Success Criterion 2.4.4 Link Purpose (In Context)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Link 1	Link text must describe the link target	A	Required	Element	F	MC		H
Link 2	Link text should be unique	A	Recommended	Element	F		P

Success Criterion 2.4.5 Multiple Ways

Rule ID	Summary	Level	Conformance	Scope	Result Values
Navigation 1	At least two ways of finding content	AA	Required	Website		MC

Success Criterion 2.4.6 Headings and Labels

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 10	Accessible name must be unique	AA	Required	Element	F	MC	P	H
Control 11	Submit and reset button labels must be unique	AA	Required	Element	F		P	H
Heading 2	h1 should be in main or banner landmark	AA	Recommended	Element	F		P	H
Heading 3	Sibling headings should be unique	AA	Recommended	Element	F		P	H
List 2	Provide list labels when appropriate	AA	Required	Element		MC		H
Table 2	Data tables must have name	AA	Required	Element	F		P	H
Widget 12	Accessible name is descriptive	AA	Required	Element	F	MC		H

Success Criterion 2.4.7 Focus Visible

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 5	Focus must be discernible	AA	Required	Page		MC		H

Success Criterion 2.4.11 Focus Not Obscured (Minimum) (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Keyboard 9	Focus is not obscured (Minimum)	AA	Required	Page		MC

Guideline 2.5 Input Modalities

Success Criterion 2.5.1 Pointer Gestures (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Pointer 1	Pointer Gestures	A	Required	Page		MC

Success Criterion 2.5.2 Pointer Cancellation (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Pointer 2	Pointer Cancellation	A	Required	Page		MC

Success Criterion 2.5.3 Label in Name (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 15	Label in name for controls	A	Required	Element		MC		H
Link 4	Label in name for links	A	Required	Element		MC		H

Success Criterion 2.5.4 Motion Actuation (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Motion 1	Motion Actuation	A	Required	Page		MC

Success Criterion 2.5.5 Target Size (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Target Size 2	Author sizing of links (Enhanced)	AAA	Recommended	Element	F		P	H
Target Size 4	Button target size (Enhanced)	AAA	Recommended	Element	F		P	H
Target Size 6	Radio button and checkbox target size (Enhanced)	AAA	Recommended	Element	F		P	H

Success Criterion 2.5.7 Dragging Movements (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Pointer 3	Dragging Movements	AA	Required	Page		MC

Success Criterion 2.5.8 Target Size (Minimum) (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Target Size 1	Author sizing of links (Minimum)	AA	Required	Element	F		P	H
Target Size 3	Button target size (Minimum)	AA	Required	Element	F		P	H
Target Size 5	Radio button and checkbox target size (Minimum)	AA	Required	Element	F		P	H

Guideline 3.1 Readable

Success Criterion 3.1.1 Language of Page

Rule ID	Summary	Level	Conformance	Scope	Result Values
Language 1	Page must use language code	A	Required	Page	F		P

Success Criterion 3.1.2 Language of Parts

Rule ID	Summary	Level	Conformance	Scope	Result Values
Language 2	Identify language changes	AA	Required	Page	F	MC	P	H

Guideline 3.2 Predictable

Success Criterion 3.2.1 On Focus

Rule ID	Summary	Level	Conformance	Scope	Result Values
Link 3	Target focus should be in content window	A	Required	Element		MC		H

Success Criterion 3.2.2 On Input

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 12	Forms submitted using buttons	A	Required	Element	F	MC	P	H
Keyboard 6	select must not change context	A	Required	Element		MC		H

Success Criterion 3.2.3 Consistent Navigation

Rule ID	Summary	Level	Conformance	Scope	Result Values
Navigation 2	Consistent ordering of landmarks	AA	Required	Website		MC
Navigation 3	Consistent ordering of h1 and h2 labels	AA	Required	Website	F	MC

Success Criterion 3.2.4 Consistent Identification

Rule ID	Summary	Level	Conformance	Scope	Result Values
Navigation 4	Consistent labeling of landmarks	AA	Required	Website		MC
Navigation 5	Consistent h1 and h2 page section labels	AA	Required	Website	F	MC

Success Criterion 3.2.6 Consistent Help (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Help 1	Consistent ordering of help	AA	Required	Website		MC

Guideline 3.3 Input Assistance

Success Criterion 3.3.1 Error Identification

Rule ID	Summary	Level	Conformance	Scope	Result Values
Error 1	Using aria-invalid to identify the validity of control values.	A	Required	Element	F	MC	P	H

Success Criterion 3.3.2 Labels or Instructions

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 1	Form controls must have labels	A	Required	Element	F	MC	P	H
Control 2	Image button must have alt. content	A	Required	Element	F		P	H
Control 3	Radio buttons must have grouping label	A	Required	Element	F		P	H
Control 4	buttons should have text content	A	Recommended	Element	F	MC	P	H
Control 6	label must reference control	A	Required	Element	F	MC	P	H
Control 7	label must have content	A	Required	Element	F	MC	P	H
Control 8	fieldset must have one legend	A	Required	Element	F		P	H
Control 9	Verify title is the label.	A	Required	Element		MC		H
Control 17	Avoid label encapsulation	A	Required	Element	F		P	H

Success Criterion 3.3.3 Error Suggestion

Rule ID	Summary	Level	Conformance	Scope	Result Values
Error 2	Using aria-required to identify required form controls and widgets	AA	Required	Element	F		P	H
Error 3	Error correction suggestions	AA	Required	Element		MC		H

Success Criterion 3.3.4 Error Prevention (Legal, Financial, Data)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Error 4	Prevent errors	AA	Required	Page		MC		H

Success Criterion 3.3.7 Redundant Entry (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 16	Redundant Entry	A	Required	Element		MC	P	H

Success Criterion 3.3.8 Accessible Authentication (Minimum) (new in WCAG 2.2)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Authorization 1	Accessible Authorization (Minimum)	AA	Required	Page		MC

Guideline 4.1 Compatible

Success Criterion 4.1.1 Parsing

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 5	id must be unique	A	Required	Element	F		P
Widget 14	Unsupported and deprecated ARIA attributes.	A	Required	Element	F			H

Success Criterion 4.1.2 Name, Role, Value

Rule ID	Summary	Level	Conformance	Scope	Result Values
Control 14	Use native HTML attributes when available	A	Required	Element	F	MC		H
Image 8	Add role to svg element	A	Required	Element	F	MC		H
Widget 1	Accessible name is required	A	Required	Element	F	MC	P	H
Widget 2	onClick event handlers must have widget role	A	Required	Element	F	MC	P	H
Widget 3	role must be valid	A	Required	Element	F	MC	P	H
Widget 4	Values must be valid	A	Required	Element	F		P	H
Widget 5	Attributes that start with aria- must be defined.	A	Required	Element	F		P	H
Widget 6	Widgets must set properties	A	Required	Element	F		P	H
Widget 7	Widgets must have owned elements	A	Required	Element	F	MC	P	H
Widget 8	Role must have parent	A	Required	Element	F		P	H
Widget 9	Only one owner	A	Required	Element	F		P
Widget 10	Value in range	A	Required	Element	F		P	H
Widget 11	Verify aria-valuetext value.	A	Required	Element	F	MC		H
Widget 13	Role does not support accessible name.	A	Required	Element	F			H

Success Criterion 4.1.3 Status Messages (new in WCAG 2.1)

Rule ID	Summary	Level	Conformance	Scope	Result Values
Live 1	Live regions for status and error messages	AA	Required	Page		MC		H