Blog · 12 min read
SEO and Accessibility: A 90 Day Plan for Fixes That Help Both
Yes, accessibility and SEO reinforce one another: accessible pages are more indexable, more useful to people, and therefore easier for search engines to evaluate and rank well. We ground that claim in WCAG, the DOJ’s web rule, and Core Web Vitals. The practical fixes that satisfy each standard overlap more than most teams expect, and we walk through them starting now.
TL;DR:
The DOJ rule requires state and local government websites and apps to meet WCAG 2.1 Level AA; after an April 2026 extension, entities serving 50,000 or more must comply by April 26, 2027.
Start with your twenty highest traffic landing pages, fixing unique titles, logical headings, contextual alt text, descriptive links, captions, keyboard access, and labeled forms.
Google recommends an INP of 200 milliseconds or less at the 75th percentile; compare lab results with field data and real user monitoring.
Automated scans miss barriers, so pair them with keyboard and screen reader tests, then assign each WCAG finding an owner and scheduled recheck.
Overlay widgets do not change underlying HTML, so they cannot replace permanent code fixes that crawlers and assistive technologies can interpret.
Table of Contents
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What Is Web Accessibility, and Which Standards Should Guide You?
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Why Accessibility Improves SEO: The Shared Signals That Matter
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Performance and Accessibility: Core Web Vitals, INP, and Shared Optimizations
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How AccessWiser Supports Both Accessibility and SEO Outcomes
What Is Web Accessibility, and Which Standards Should Guide You?
Web accessibility means building pages that people with disabilities can perceive, navigate, and use, whether they rely on a screen reader, a keyboard, voice control, or a captioned video. The Web Content Accessibility Guidelines organize this work around four principles: content must be perceivable, operable, understandable, and robust enough to work across browsers and assistive technologies. Every fix we describe in this piece traces back to one of those four.
These principles are not just best practice anymore. The Department of Justice’s final rule, issued April 24, 2024, requires state and local government web content and mobile apps to conform to WCAG 2.1 Level AA. An interim final rule in April 2026 extended those dates: entities serving populations of 50,000 or more now have until April 26, 2027, and smaller entities and special district governments have until April 26, 2028. The rule applies directly to public-sector sites, but it has pushed WCAG 2.1 AA, and increasingly WCAG 2.2 AA, into the default benchmark private businesses use to manage legal exposure under the Americans with Disabilities Act.
Working from a named standard matters for two reasons. It gives your team a testable target instead of a vague goal like “more accessible,” and it gives you a defensible record if you’re ever questioned. Both reasons matter just as much for search visibility as they do for compliance.
Why Accessibility Improves SEO: The Shared Signals That Matter
Search crawlers and assistive technologies read your pages in strikingly similar ways. Neither one sees your visual layout. Both depend on the structure and the words in your code to understand what a page is about and how its pieces relate.
Semantic HTML is the clearest example. A page that uses actual heading tags in logical order, rather than bold text styled to look like a heading, gives screen reader users a navigable outline and gives crawlers the same outline to judge relevance. Seer Interactive notes that search crawlers and screen readers rely on nearly identical structural signals, so cleaning up your markup for one audience tends to help the other automatically.
The same logic applies to alt text and link text. Alt text that describes what an image actually shows, rather than “image1.jpg” or nothing at all, helps a screen reader user understand the content and gives search engines context for image search. Link text that says “download our pricing guide” instead of “click here” tells both a blind visitor and a crawler what to expect on the other end.
Captions and transcripts extend this further. Adding them to audio and video does not just serve users who are deaf or hard of hearing. It creates indexable text tied to your multimedia that search engines can crawl, something a video file alone never offers.
W3C’s Web Accessibility Initiative frames accessibility and SEO as mutually reinforcing investments rather than competing priorities, pointing to descriptive link text and proper heading hierarchies as patterns that serve users and crawlers at the same time. Pages built this way also tend to keep visitors engaged longer and reduce the kind of immediate exits that signal a poor match between query and content, outcomes search systems are built to reward.
Priority Accessibility Practices That Directly Affect SEO
Some accessibility fixes move the needle on both fronts more than others. We rank these by how directly each one touches crawlability, relevance, or user engagement, so your content and development teams can sequence work with confidence.
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Page titles and meta descriptions. Write a unique, descriptive title for every page; screen reader users hear it first when a page loads, and it is one of the strongest relevance signals you control.
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Heading hierarchies. Use one H1 per page and nest H2s and H3s in logical order; this creates a navigable outline for assistive technology and a clear topic map for crawlers.
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Alt text for images. Describe what the image conveys in context, skip it only for purely decorative images, and let genuinely informative images earn a shot at image search results.
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Anchor and link text. Replace “click here” and “read more” with text that describes the destination, since vague link text strips context from both visitors and crawlers.
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Captions and transcripts. Caption every video and transcribe every podcast episode to turn audio and video into text search engines can actually read.
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ARIA, used sparingly. Reach for ARIA attributes only when native HTML cannot express a role or state; misapplied ARIA, like a redundant
role="button"on an actual<button>, can confuse both assistive tech and crawlers rather than help them. -
Keyboard operability. Add skip links, manage tabindex deliberately, and make sure every interactive element shows a visible focus indicator, because a site that traps keyboard users is a site with core interactions that fail for them entirely.
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Forms and labels. Pair every input with a programmatic label and surface error messages in a way assistive technology announces, since confusing forms lose conversions and signal a poor experience regardless of who is filling them out.
Pro Tip: Audit your top twenty landing pages first. They carry the most search traffic, so fixes there produce the fastest combined accessibility and SEO payoff.
The common thread across all eight practices is that none of them is cosmetic. Each one changes the actual HTML a browser renders, which is exactly what both a screen reader and a search crawler depend on.
Performance and Accessibility: Core Web Vitals, INP, and Shared Optimizations
Interaction to Next Paint, or INP, is the Core Web Vital that measures how quickly a page responds after someone clicks, taps, or presses a key. Google recommends an INP of 200 milliseconds or less at the 75th percentile for a page to count as responsive.
Responsiveness is not a cosmetic nicety for users of assistive technology. A screen reader user navigating by keyboard, or someone using switch access, depends on the interface acknowledging each input quickly; a sluggish response can make an interactive element feel broken rather than just slow. That same lag drags down the Core Web Vitals score search engines factor into ranking signals.
The fixes for one problem tend to fix the other. Breaking up long JavaScript tasks keeps the main thread free to respond to both a mouse click and a keyboard tab press. Limiting DOM size reduces the work assistive technology and browsers both have to do to parse the page. Deferring noncritical JavaScript until after the page is interactive, and using content-visibility to skip rendering work for off-screen content, both shrink the delay between input and response.
To measure where you stand, pair lab data from PageSpeed Insights with field data from the Chrome User Experience Report, and layer in real-user monitoring on your own site to catch regressions lab tests miss. Diagnosing responsiveness this way, with both lab and field signals, gives you a far more accurate picture than either source alone.
How to Test and Measure Accessibility for SEO Teams
Automated scanners are a fast first pass, not a finish line. They reliably catch missing alt text, empty links, and contrast failures, but W3C’s testing guidance is clear that automated tools detect a meaningful subset of barriers while missing many others, which is why manual testing has to follow.
A practical testing workflow combines several checks, each catching what the others miss:
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Run an automated scan across your site to flag structural and code-level issues at scale.
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Navigate your key pages using only a keyboard to confirm every interactive element is reachable and usable.
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Run a screen reader smoke test on your top pages, confirming heading navigation works, alt text conveys real meaning, and form labels and error messages are announced correctly.
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Check that every video carries accurate captions and every audio file has a transcript.
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Set up real-user monitoring to catch performance regressions and new accessibility issues as code ships.
Once you have findings from all four sources, map each one to the specific WCAG success criterion it violates, assign an owner, and schedule a re-check date rather than treating remediation as a one-time project. Our own testing workflow guide walks through this same sequence in more detail for development teams building it into their sprint cadence. A site architecture that keeps priority pages within a few clicks of the homepage, a long-standing SEO principle, also makes both your crawl budget and your manual testing far more efficient, since you are not hunting through a sprawling site map to find what needs attention.
Implementation Checklist and a 90-Day Remediation Plan
Turning findings into fixes goes faster when content and development work run in parallel rather than waiting on each other.
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Week 1 to 2, content triage. Fix page titles, correct heading order, write real alt text for informative images, and replace vague link text across your highest-traffic pages.
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Week 1 to 2, dev triage. Add missing landmarks, strip out redundant or incorrect ARIA, and confirm visible focus indicators exist on every interactive element.
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Week 3 to 6, medium-effort fixes. Add captions and transcripts to existing video and audio, rebuild forms with proper labels and announced error states, and resolve keyboard traps.
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Week 7 to 12, deeper technical debt. Tackle component-level issues such as custom widgets that need full keyboard and ARIA rebuilds, and address the JavaScript patterns driving slow INP scores.
Pro Tip: Validate each fix with a concrete test, not a visual check: confirm the page still indexes correctly after a heading change, and confirm a screen reader actually announces the new label before you mark the ticket done.
This cadence mirrors the 90-day remediation plan we use when mapping audit findings to sprint tasks, and the specific fix patterns for WCAG 2.2’s newer criteria are detailed in our developer playbook. Quick wins first, medium-effort fixes next, deep technical debt last: that order keeps visible progress flowing while the harder work gets the runway it needs.
How AccessWiser Supports Both Accessibility and SEO Outcomes
We scan websites against WCAG 2.2 AA success criteria, with mappings to Section 508 and EN 301 549, so you know exactly which legal and technical framework each finding relates to. Every issue we surface comes with plain-language guidance for fixing it directly in your site’s own code, not a runtime overlay sitting on top of unchanged HTML.
Because the fix happens in the code itself, it is visible to the same crawlers and assistive technologies that benefit from every practice described above. We pair those scans with scheduled re-checks that catch regressions after a redesign or a content update, and we keep dated records of scans and fixes you can point to as evidence of ongoing effort. Our solutions overview lays out the full scan-to-documentation workflow in more detail.
Our Prioritization Rule, and the Fixes We See Most Often
Our rule of thumb: fix whatever blocks indexable content or a core interaction before anything else. Everything downstream of that decision gets easier.
The quick wins we see most often are missing alt text, absent skip links, and uncaptioned video, all fast to fix and all valuable for both audiences. We’d also caution against leaning on overlay widgets as a substitute for code fixes: overlays don’t change the underlying HTML that crawlers and most assistive technology actually read.
— The AccessWiser Team
Get Scanning, Fixing, and Documenting With AccessWiser
We built our platform so scanning, remediation, and proof of effort live in one place instead of three. Here’s what that looks like in practice:
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Automated scans against WCAG 2.2 AA, mapped to Section 508 and EN 301 549.
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Plain-language, code-level fix guidance for every finding, built for permanent remediation.
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Scheduled re-checks that catch regressions after every redesign or content push.
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Dated scan and fix records, plus accessibility statement support, for your compliance documentation.
Plans start at $24 a month on our Starter tier, with Basic, Pro, and Business tiers available as your scanning and monitoring needs grow. Start a free trial and run your first scan today.
FAQ
What Is Accessibility and SEO, and How Are They Related?
Web accessibility means building pages usable by people with disabilities, while SEO means optimizing pages for search visibility. They are related because both crawlers and assistive technologies depend on the same underlying signals, like semantic HTML, descriptive text, and clear page structure, so fixing one often improves the other.
What Are SEO and ADA Principles, and Do They Overlap?
SEO principles focus on crawlability, relevance, and user engagement, while ADA-related accessibility principles follow WCAG’s four pillars: perceivable, operable, understandable, and robust. They overlap wherever structure and clarity matter to both a search engine and a person using assistive technology, which is most of the time.
What Are the Three Types of Accessibility Teams Should Prioritize?
Definitions vary, but a practical breakdown for most teams covers content accessibility (alt text, captions, clear language), structural accessibility (semantic HTML, heading order, ARIA used correctly), and interactive accessibility (keyboard operability, focus indicators, accessible forms). Prioritizing fixes across all three tends to produce the broadest SEO and usability gains together.
Does Fixing Accessibility Issues Really Help Search Rankings?
Accessibility fixes like descriptive link text and clean heading hierarchies help search crawlers understand and index content more accurately, which W3C’s own guidance treats as a mutually reinforcing investment rather than a side effect. They also tend to improve engagement metrics like time on page, which supports broader search performance goals.
How Often Should We Re-check a Site for Accessibility and SEO Issues?
Re-checks should follow every major redesign, content migration, or template change, since new code can reintroduce old issues. Scheduling automated re-checks alongside periodic manual testing, rather than treating an audit as a one-time project, catches regressions before they affect both compliance and search visibility.
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Articles on this blog are general information about web accessibility, not legal advice. Laws change and their application depends on your specific situation — for decisions with legal consequences, consult a qualified legal professional.