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