Pages
- <dl>'s contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements (Accessibility)
- <frame> or <iframe> elements have a title (Accessibility)
- <html> element has a [lang] attribute (Accessibility)
- <html> element has a valid value for its [lang] attribute (Accessibility)
- <html> element has an [xml:lang] attribute with the same base language as the [lang] attribute (Accessibility)
- <input type="image"> elements have [alt] text (Accessibility)
- <object> elements have alternate text (Accessibility)
- <td> elements in a large <table> have one or more table headers (Accessibility)
- <th> elements and elements with [role="columnheader"/"rowheader"] have data cells they describe (Accessibility)
- <video> elements contain a <track> element with [kind="captions"] (Accessibility)
- 21st Century Integrated Digital Experience Act (IDEA)
- 28 CFR Part 35
- [accesskey] values are unique (Accessibility)
- [aria-*] attributes are valid and not misspelled (Accessibility)
- [aria-*] attributes have valid values (Accessibility)
- [aria-*] attributes match their roles (Accessibility)
- [aria-hidden="true"] elements do not contain focusable descendents (Accessibility)
- [aria-hidden="true"] is not present on the document <body> (Accessibility)
- [lang] attributes have a valid value (Accessibility)
- [role] values are valid (Accessibility)
- [role]s are contained by their required parent element (Accessibility)
- [role]s have all required [aria-*] attributes (Accessibility)
- [user-scalable="no"] is not used in the <meta name="viewport"> element and the [maximum-scale] attribute is not less than 5 (Accessibility)
- All heading elements contain content (Accessibility)
- ARIA attributes are used as specified for the element's role (Accessibility)
- ARIA IDs are unique (Accessibility)
- ARIA input fields have accessible names (Accessibility)
- ARIA meter elements have accessible names (Accessibility)
- ARIA progressbar elements have accessible names (Accessibility)
- ARIA toggle fields have accessible names (Accessibility)
- ARIA tooltip elements have accessible names (Accessibility)
- ARIA treeitem elements have accessible names (Accessibility)
- Automated Readability Index (ARI)
- Background and foreground colors have a sufficient contrast ratio (Accessibility)
- button, link, and menuitem elements have accessible names (Accessibility)
- Buttons have an accessible name (Accessibility)
- Canonical (Botability)
- Cells in a <table> element that use the [headers] attribute refer to table cells within the same table (Accessibility)
- Character encoding (Accessibility)
- CISA Cybersecurity Performance Goals
- CISA Website Security
- Clickjacking mitigation (Security)
- Content available in document (Botability)
- Content security policy (CSP) (Security)
- Crawlable (Botability)
- Cumulative Layout Shift (CLS) (Usability)
- Definition list items are wrapped in <dl> elements (Accessibility)
- Deprecated ARIA roles were not used (Accessibility)
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Digital experience standards
- Document has a <title> element (Accessibility)
- Document has a main landmark (Accessibility)
- Elements use only permitted ARIA attributes (Accessibility)
- Elements with an ARIA [role] that require children to contain a specific [role] have all required children (Accessibility)
- Elements with role="dialog" or role="alertdialog" have accessible names (Accessibility)
- Elements with the role=text attribute do not have focusable descendents (Accessibility)
- Elements with visible text labels have matching accessible names (Accessibility)
- Errors in the console (Security)
- First Contentful Paint (FCP) (Usability)
- Flesch-Kincaid (FK)
- Form elements have associated labels (Accessibility)
- Google Search Central
- GovernmentOrganization Schema.org Type (Botability)
- GSA Site Scanning
- Guidance
- Heading elements appear in a sequentially-descending order (Accessibility)
- hreflang (Botability)
- HTTP Strict Transport Security (HSTS) (Security)
- Hypertext Transfer Protocol Secure (HTTPS) (Security)
- Identical links have the same purpose (Accessibility)
- Image aspect ratio (Accessibility)
- Image elements do not have [alt] attributes that are redundant text (Accessibility)
- Image elements have [alt] attributes (Accessibility)
- Input buttons have discernible text (Accessibility)
- Interaction to Next Paint (INP) (Usability)
- Largest Contentful Paint (LCP) (Usability)
- Link text (Botability)
- Links are distinguishable without relying on color (Accessibility)
- Links have a discernible name (Accessibility)
- List items (<li>) are contained within <ul>, <ol> or <menu> parent elements (Accessibility)
- Lists contain only <li> elements and script supporting elements (<script> and <template>) (Accessibility)
- Memorandum (M-23-22)
- No element has a [tabindex] value greater than 0 (Accessibility)
- No form fields have multiple labels (Accessibility)
- Open Graph
- Open Graph description (Usability)
- Open Graph image (Usability)
- Open Graph image alt (Usability)
- Open Graph site name (Usability)
- Open Graph title (Usability)
- Open Graph type (Usability)
- Open Graph URL (Usability)
- OWASP Top 10
- Page description (Usability)
- Page title (Usability)
- Paste preventing inputs (Security)
- Plain Writing Act of 2010
- Readability (Usability)
- RFC 9116
- Robots allowed (Botability)
- Robots valid (Botability)
- Schema.org structured data
- security.txt (Security)
- Select elements have associated label elements (Accessibility)
- Sitemap in robots.txt (Botability)
- Sitemap status (Botability)
- Sitemap XML (Botability)
- sitemaps.org
- Skip links are focusable (Accessibility)
- Sponsored top-level domain (sTLD) (Security)
- Tables have different content in the summary attribute and <caption> (Accessibility)
- Tables use <caption> instead of cells with the [colspan] attribute to indicate a caption (Accessibility)
- The document does not use <meta http-equiv="refresh"> (Accessibility)
- The page contains a heading, skip link, or landmark region (Accessibility)
- The Web Robots Pages
- Time to First Byte (TTFB) (Usability)
- Touch targets have sufficient size and spacing (Accessibility)
- U.S. Federal Website Standards
- Uses ARIA roles only on compatible elements (Accessibility)
- Valid doctype (Accessibility)
- Viewport meta tag (Usability)
- Web Content Accessibility Guidelines (WCAG)
- Web Vitals / Core Web Vitals
- www resolution (Usability)
- X-Content-Type-Options (Security)