WordPress Accessibility Plugins for Government and Public Sector Sites (2026)

The Department of Justice published its final rule in April 2024 requiring state and local government websites to meet WCAG 2.2 Level AA. Entities serving populations of 50,000 or more must comply by 24 April 2026, with smaller entities following later. That is a dated, binding obligation rather than a best practice, and it names a specific standard version.

Public sector accessibility differs from commercial accessibility in three ways that change what you should buy: you must be able to evidence conformance rather than merely achieve it, you procure through a process that asks for documentation, and you typically have many editors across many sites with no central control. Those constraints, not the technical standard, are what should drive tool selection.

Verified August 2026. Our WCAG 2.2 guide covers the nine new success criteria in detail.

What public sector adds to the requirement

Evidence, not just conformance. You need a record of what was tested, when, by whom, and what was fixed. A site that is accessible with no documentation is difficult to defend.
VPATs and procurement. Every third-party product you buy should come with an accessibility conformance report, and you will be asked to provide one for services you offer.
Many editors, no central control. Departments publish independently. Any programme that depends on one person checking everything will fail within a month.
Documents as well as pages. Public bodies publish enormous quantities of PDFs, and those are in scope. This is frequently the largest single body of inaccessible content.
Legacy content at scale. Decades of archived material, much of it still legally required to be available.

Note what is not on that list: finding the issues. Detection is the easy part and free tools do most of it. The hard parts are coordination and proof.

The 6 options compared

1. Siteimprove

The established choice in public sector for reasons that have little to do with detection quality. It provides policy management, role-based workflow, issue assignment across departments, and reporting over time, which maps directly onto how a government body is actually organised.

Enterprise pricing often exceeds $10,000 a year, and for an entity serving 50,000 or more people working to the April 2026 deadline that is usually proportionate. What justifies it is not that it finds more than a free scanner, because it does not, but that it can tell you which department owns which failure, what has improved since last quarter, and produce a report a legal team can rely on. If your obligation includes demonstrating diligence, that documentation is the product.

Pricing: Enterprise, often above $10,000 a year
Provides: Policy, workflow, assignment, longitudinal reporting
Best for: Entities with many departments and a compliance deadline
Watch out for: Detection is no better than free tools

2. Silktide

The direct alternative, covering accessibility alongside content quality and SEO in one crawl, with custom pricing typically 30% to 50% less than Siteimprove for comparable capability. For a body that would otherwise buy Siteimprove, that difference is often tens of thousands over a contract term.

The combined reporting is genuinely useful in public sector because the same content problems recur across all three areas: an unclear heading is an accessibility issue, a content quality issue, and an SEO issue simultaneously, and getting one report rather than three makes it likelier that somebody acts. Run a procurement comparison against Siteimprove on your actual site estate rather than on feature lists, since the gap narrows or widens considerably depending on how many sites and editors you have.

Pricing: Custom, typically 30% to 50% below Siteimprove
Provides: Accessibility with content quality and SEO in one crawl
Best for: Bodies wanting Siteimprove capability at lower cost
Watch out for: Compare on your real estate, not on feature lists

3. Equalize Digital Accessibility Checker

The tool that addresses the coordination problem at its source, by putting checking inside the editor where departmental authors work. A governance platform tells the central team about a problem a department created last week; an in-editor checker stops the department creating it.

Its pricing is the reason it belongs in a public sector stack even alongside an enterprise platform. A free version exists, and paid plans start at $190 a year with unlimited page scanning and no per-page or API fees, so deploying it across a large site estate does not scale in cost the way crawler licensing does. For a body with many WordPress sites and a limited budget, this plus free browser tools is a credible programme on its own, and a genuinely useful complement to a governance platform if you have one.

Pricing: Free version; paid from $190 a year, unlimited pages
Provides: Authoring-time checking for departmental editors
Best for: Stopping new issues rather than reporting them
Watch out for: No cross-department workflow or assignment

4. Pa11y CI

Free, open source, and unusually well suited to public sector procurement precisely because there is nothing to procure. Where buying software takes six months and you have a deadline of 24 April 2026, a tool your development team can adopt this week has practical value beyond its features.

It runs against a URL list in a build pipeline and fails when new violations appear, which for an organisation with contracted development agencies is a way to hold suppliers to a standard. Write the Pa11y baseline into the contract, and a supplier cannot ship a regression. That is a stronger accountability mechanism than a clause requiring WCAG conformance, because it is automatically enforced rather than argued about at handover.

Pricing: Free, open source, no procurement
Provides: Automated regression prevention in the build
Best for: Holding development suppliers to a standard
Watch out for: Requires a build pipeline and technical staff

5. axe DevTools and WAVE

Free browser extensions, and the tools your staff will actually use. axe has the lowest false positive rate in general use, which matters when non-specialists are triaging findings, and WAVE annotates the page visually, which matters when you are training people who did not choose to work on accessibility.

For a public body the training value is the point. Departmental editors need to understand why a heading structure matters, and showing them the outline WAVE generates from their own page does that in a minute. Budget nothing, install both, and run a short session for every team that publishes. That costs less than any line item in this article and reduces the flow of new issues more than most of them.

Pricing: Free
Provides: Per-page checking and a training aid
Best for: Getting departmental editors to understand the problem
Watch out for: No central reporting or evidence trail

6. Manual audit and VPAT documentation

The part that is not software and the part that satisfies the obligation. Automated detection reaches roughly 30% of WCAG issues; a professional audit covers the rest and produces the documentation a public body needs.

A Voluntary Product Accessibility Template, and the Accessibility Conformance Report it produces, is the standard artefact for stating conformance in procurement. You will be asked for one for services you provide, and you should require one from every vendor you buy from, because inheriting an inaccessible third-party booking system or payment portal makes their failure your liability. Build VPAT requirements into procurement now rather than discovering after purchase that a supplier cannot supply one.

Pricing: Varies by scope; not a software cost
Provides: The other 70%, plus defensible documentation
Best for: Meeting the obligation rather than approximating it
Watch out for: Require VPATs from suppliers, not just from yourself

Comparison table

Option	Annual cost	Cross-department workflow	Evidence trail	Stops new issues
Siteimprove	Often $10,000 plus	Yes, strongest	Yes	No
Silktide	30% to 50% below Siteimprove	Yes	Yes	No
Equalize Digital	Free, or $190	No	Partial	Yes, at authoring
Pa11y CI	Free	No	Build records	Yes, at release
axe and WAVE	Free	No	No	Via training
Manual audit and VPAT	Varies	Not applicable	Yes, definitive	No

A programme that meets the April 2026 date

Baseline now and record it. Crawl the estate, save the results with a date. Evidence of your starting position matters as much as the improvement.
Fix templates before pages. A header issue repeated across 40,000 URLs is one fix. Template work produces the largest measurable movement fastest.
Put checking in the editor. Departments publish independently; the only scalable control is one that operates where they work.
Triage documents separately. PDFs are usually the largest inaccessible body and need their own plan, including whether to republish as HTML instead.
Require VPATs in procurement. Every system you buy from now on. Inheriting a supplier’s failure is still your obligation.
Commission a manual audit of key services. Applying for something, paying something, reporting something. Those journeys are what the rule is about.
Publish an honest accessibility statement. Current conformance, known gaps, target dates, and a contact route. Honest and dated beats aspirational.

Related guides

Frequently asked questions

Does the April 2026 deadline apply to us?

Under the DOJ final rule, state and local government entities serving populations of 50,000 or more must comply with WCAG 2.2 AA by 24 April 2026. Smaller entities have a later date. Confirm your classification rather than assuming.

WCAG 2.1 or 2.2?

2.2, explicitly. The DOJ rule names 2.2 Level AA, and EN 301 549 v4.1.1 is expected to adopt 2.2 during 2026 for European purposes. Building to 2.1 now means auditing twice.

What is a VPAT and do we need one?

It is the template used to produce an Accessibility Conformance Report describing how a product meets accessibility standards. You should require one from suppliers and expect to provide one for services you offer. Build it into procurement rather than requesting it afterwards.

What about our PDF archive?

In scope, and usually the largest problem. Triage by use: remediate documents people actually need, republish key content as HTML, and archive the rest with a documented process for providing accessible versions on request.

Can we buy our way to compliance?

No. Every platform in this article detects roughly the same 30% of issues and organises the results; none fixes anything. Software buys coordination and evidence, and people buy conformance.

We have no budget. What is the minimum?

Free browser tools plus Equalize Digital at $190 across your sites, a documented keyboard test of your key services, and an honest accessibility statement. That is a genuine, defensible programme for under a few hundred dollars, and it is considerably better than an unfunded enterprise licence.

The verdict

For entities under the April 2026 deadline with several sites and departments: Silktide, at typically 30% to 50% below Siteimprove for comparable capability, or Siteimprove where its workflow depth genuinely matches your organisation.

Alongside it, always: Equalize Digital at $190 a year with unlimited pages, so departmental authors are checked where they work rather than reported on afterwards. This is the piece that reduces the inflow.

If procurement is slower than your deadline: Pa11y CI and free browser tools, adopted this week, with the Pa11y baseline written into your development contracts.

And budget for the manual audit and the VPAT work. Automated tools reach about 30% of the criteria and produce no conformance statement. The obligation is on the other 70% and on being able to show it.

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