(by Elliott Rusty Harold (Addison-Wesley, 2008, ISBN-13 978-0-321-50363-3))

Well-Formedness

Change Name to Lowercase (69)
Quote Attribute Value (73)
Fill In Omitted Attribute Value (76)
Replace Empty Tag with Empty-Element Tag (78)
Add End-tag (82)
Remove Overlap (86)
Convert Text to UTF-8 (89)
Escape Less-Than Sign (91)
Escape Ampersand (93)
Escape Quotation Marks in Attribute Values (96)
Introduce an XHTML DOCTYPE Declaration (98)
Terminate Each Entity Reference (101)
Replace Imaginary Entity References (102)
Introduce a Root Element (103)
Introduce the XHTML Namespace (104)

Validity

Introduce a Transitional DOCTYPE Declaration
Remove all Nonexistent Tags
Add an alt Attribute
Replace embed with object
Introduce a Strict DOCTYPE Declaration
Replace center with CSS
Replace font with CSS
Replace i with em or CSS
Replace b with strong or CSS
Replace the color Attribute with CSS
Convert img Attributes to CSS
Replace applet with object
Replace Presentational Elements with CSS
Nest Inline Elements inside Block Elements

Layout

Replace Table Layouts
Replace Frames with CSS Positions
Move Content to the Front
Mark up Lists as Lists
Replace blockquote/ul Indentation with CSS
Replace Spacer GIFs
Add an ID Attribute
Add Width and Height to an Image

Accessibility

Convert Images to Text
Add Labels to Form Input
Introduce Standard Field Names
Turn on Autocomplete
Add Tab Indexes to Forms
Introduce Skip Navigation
Add Internal Headings
Move Unique Content to the Front of Links and Headlines
Make the Input Field Bigger
Introduce Table Descriptions
Introduce Acronym Elements
Introduce lang Attributes

Web Applications

Replace Unsafe GET with POST
Replace Safe POST with GET
Redirect POST to GET
Enable Caching
Prevent Caching
Introduce ETag
Replace Flash with HTML
Add Web Forms 2.0 Types
Replace Contact Forms with mailto Links
Block Robots
Escape User Input

Content

Correct Spelling
Repair Broken Links
Remove the Entry Page
Hide E-mail Addresses

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Last modified 06 April 2022