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Fix 20 broken external links in WCAG 2.2 documentation (#4964) - #5123

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mikeyil:mikeyil-issue4964
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Fix 20 broken external links in WCAG 2.2 documentation (#4964)#5123
mikeyil wants to merge 4 commits into
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mikeyil:mikeyil-issue4964

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@mikeyil mikeyil commented May 17, 2026

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Fix #4964: Replace unavailable links with current, authoritative international sources. Prioritized W3C/WAI, MDN, and established nonprofits over regional/commercial alternatives. Updated HTTP to HTTPS where applicable.

Replace unavailable links with current, authoritative international sources.
Prioritized W3C/WAI, MDN, and established nonprofits over regional/commercial
alternatives. Updated HTTP to HTTPS where applicable.
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@mikeyil
mikeyil marked this pull request as draft May 17, 2026 01:52
@mikeyil mikeyil closed this May 17, 2026
@mikeyil mikeyil reopened this May 17, 2026
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mikeyil marked as non substantive for IPR from ash-nazg.

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mikeyil marked this pull request as ready for review May 17, 2026 01:59
@patrickhlauke patrickhlauke moved this to Drafted in WCAG 2.x May 17, 2026
@patrickhlauke patrickhlauke self-assigned this May 26, 2026
<a href="https://www.corefiling.com/opensource/schemaValidate/">XML Schema Validator</a> by CoreFiling is an online tool that allows you to validate an XML file against a W3C XML Schema, both of which can be uploaded.</li>
<li>
<a href="http://www.xmlforasp.net/SchemaValidator.aspx">Schema Validator</a>: this is a validator that allows you to paste XML and W3C XML Schema code into text boxes to validate XML code.
<a href="https://www.freeformatter.com/xml-validator-xsd.html">FreeFormatter XML Validator</a> is a free online XML validator against XSD schemas.

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that site has been retired. suggest removing the entire bullet point altogether

Comment on lines 52 to 55
<li>
<a href="http://sovo-tech.com/">Sovo Closed Captioning and Audio Description Services </a>
<a href="https://www.sovo-tech.com/en/why-sovo/">Sovo Closed Captioning and Audio Description Services </a>
</li>
</ul>

@patrickhlauke patrickhlauke Aug 8, 2026

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that company doesn't exist anymore. suggest removing entire bullet.

</li>
<li>
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">Techniques for filming sign language interpreters</a>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">Techniques for filming sign language interpreters</a>

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site doesn't exist anymore. remove bullet

</li>
<li>
<a href="http://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>
<a href="https://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>

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404s

</li>
<li>
<a href="http://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>
<a href="https://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>

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404s

</li>
<li>
<a href="http://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>
<a href="https://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>

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404s

</li>
<li>
<a href="http://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>
<a href="https://www.vischeck.com/daltonize/runDaltonize.php">Tool to convert images based on color loss so that contrast is restored as luminance contrast when there was only color contrast (that was lost due to color deficiency)</a>

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404s

<ul>
<li>
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/deliver/d31/deliv_31_part3-2.html#3.2.2.6">"Sign Language presentation"</a>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide11.htm#3.2.2.6">"Sign Language presentation"</a>

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doesn't exist anymore

gives a broad overview of issues to consider when filming sign language interpreters. Includes discussion of signing both written and spoken originals.</li>
<li>Techniques for filming are discussed in
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">chapter 12, “Filming the Signer(s)"</a>.</li>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">chapter 12, “Filming the Signer(s)"</a>.</li>

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doesn't exist anymore

<li>
<p>Useful information about how to display the sign language interpreter in relation to the original synchronized media content is provided in
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide13.htm">Chapter 13, "Editing"</a>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide13.htm">Chapter 13, "Editing"</a>

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doesn't exist anymore

<ul>
<li>
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/deliver/d31/deliv_31_part3-2.html#3.2.2.6">"Sign Language presentation"</a>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide11.htm#3.2.2.6">"Sign Language presentation"</a>

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doesn't exist anymore

signing both written and spoken originals.</li>
<li>Techniques for filming are discussed in
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">chapter 12, “Filming the Signer(s)"</a>.</li>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">chapter 12, “Filming the Signer(s)"</a>.</li>

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doesn't exist anymore

language interpreter in relation to the original
synchronized media content is provided in
<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide13.htm">Chapter 13, "Editing"</a>.</p>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide13.htm">Chapter 13, "Editing"</a>.</p>

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doesn't exist anymore

<li>

<a href="http://www.456bereastreet.com/archive/200701/styling_form_controls_with_css_revisited/">Styling form controls with CSS, revisited</a>
<a href="https://www.w3schools.com/css/css_form.asp">W3Schools: Styling Form Controls with CSS</a>

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w3schools, really? authoritative?

</li>
<li>
<a href="http://www.456bereastreet.com/archive/200504/about_fluid_and_fixed_width_layouts/">About fluid and fixed width layouts</a>
<a href="https://www.w3.org/WAI/WCAG21/Understanding/resize-text.html">Resizing: Fixed, Fluid, or Responsive Layouts</a>

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not really relevant

<li>

<a href="http://www.sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">Techniques for filming sign language interpreters</a>
<a href="https://sign-lang.uni-hamburg.de/signingbooks/sbrc/grid/d71/guide12.htm">Techniques for filming sign language interpreters</a>

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doesn't exist anymore

<h2>Resources</h2>
<ul>
<li><a href="https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/adaptivity-and-layout/">Apple touch target size recommendations</a></li>
<li><a href="https://developer.apple.com/design/human-interface-guidelines/accessibility">Apple touch target size recommendations</a></li>

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Suggested change
<li><a href="https://developer.apple.com/design/human-interface-guidelines/accessibility">Apple touch target size recommendations</a></li>
<li><a href="https://developer.apple.com/design/human-interface-guidelines/pointing-devices">Pointing devices / Apple Developer Documentation</a></li>

<ul>
<li><a href="https://rawgit.com/w3c/coga/master/gap-analysis/table.html">User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>
<li><a href="https://www.ssa.gov/accessibility/bpl/bps/forms/timeout/default.htm">SSA Best Practices Library: Timeouts</a></li>
<li><a href="https://w3c.github.io/coga/issue-papers/">User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>

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404

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Suggested change
<li><a href="https://w3c.github.io/coga/issue-papers/">User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>
<li><a href="https://www.w3.org/TR/coga-gap-analysis/#table3">Cognitive Accessibility Roadmap and Gap Analysis / User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>

<li><a href="https://rawgit.com/w3c/coga/master/gap-analysis/table.html">User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>
<li><a href="https://www.ssa.gov/accessibility/bpl/bps/forms/timeout/default.htm">SSA Best Practices Library: Timeouts</a></li>
<li><a href="https://w3c.github.io/coga/issue-papers/">User Needs Table 3: Entering data, error prevention &amp; recovery</a></li>
<li><a href="https://www.w3.org/WAI/WCAG21/Understanding/session-timeouts.html">SSA Best Practices Library: Timeouts</a></li>

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no

<li><a href="https://w3c.github.io/coga/issue-papers/#web-security-and-privacy-technologies">Cognitive Accessibility Issue Papers 4. Web Security and Privacy Technologies</a> and <a href="https://w3c.github.io/coga/issue-papers/privacy-security.html">Web Security and Privacy Technologies</a></li>
<li><a href="https://www.w3.org/TR/coga-usable/#provide-a-login-that-does-not-rely-on-memory-or-other-cognitive-skills-pattern">Making Content Usable for People with Cognitive and Learning Disabilities 4.7.1 Provide a Login that Does Not Rely on Memory or Other Cognitive Skills</a></li>
<li><a href="https://rawgit.com/w3c/coga/master/issue-papers/privacy-security.html">Security and Privacy Technologies issue paper from the Cognitive Task Force</a>.</li>
<li><a href="https://w3c.github.io/coga/issue-papers/privacy-security.html">Security and Privacy Technologies issue paper from the Cognitive Task Force</a>.</li>

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404s

@patrickhlauke patrickhlauke left a comment

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most of these changes are broken. thanks, but i think we'll pass and do a fresh version.

@github-project-automation github-project-automation Bot moved this from Drafted to Done in WCAG 2.x Aug 8, 2026
@mikeyil
mikeyil deleted the mikeyil-issue4964 branch August 10, 2026 02:35
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Broken external links on the WCAG 2.2 Understanding and Techniques pages

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