An accessibility toolbar lets visitors change how a page looks — bigger text, higher contrast, paused motion. An "overlay" claims to go further and fix your site automatically, often promising compliance. No widget can make a site compliant: that depends on your headings, alt text, contrast, keyboard access and forms. Use a toolbar as a convenience, and fix the site itself with a checker and real testing.
Disclosure: WPXERO makes ExtenderX, which includes an accessibility toolbar. This is general information, not legal advice.
Toolbar, overlay, checker: three different things
| What it does | What it can't do | |
|---|---|---|
| Toolbar | Gives visitors controls: text size, contrast, readable font, underline links, pause animations | Fix missing alt text, broken headings, unlabelled forms or keyboard traps |
| Overlay | A script that tries to detect and patch problems automatically as the page loads, often marketed as "instant compliance" | Reliably repair a site's structure and content, or guarantee compliance |
| Checker | Scans your pages and lists issues for you to fix | Fix anything by itself, or catch everything (manual testing is still needed) |
The toolbar and the checker are useful. The overlay's promise is the problem.
Why "instant compliance" claims are a red flag
In 2025 the US Federal Trade Commission finalized an order requiring accessiBe, a well-known overlay vendor, to pay $1 million. The FTC alleged that the company's claims that its AI tool could make any website compliant with WCAG were false, misleading or unsubstantiated, and that it ran paid reviews formatted to look independent. The order bars it from claiming its automated product can make sites WCAG-compliant or keep them compliant over time without evidence. (FTC announcement)
The general lesson: if a widget's marketing says "compliant in minutes" or shows a compliance badge, be sceptical. Many disabled users already have assistive technology — a screen reader, magnification, high-contrast mode — set up the way they like, and an extra layer on top can get in their way.
What an honest toolbar is good for
Some visitors don't use assistive technology but still struggle with small text, low contrast or moving content. A toolbar on the page helps them quickly, without digging into browser settings.
ExtenderX's free Accessibility Toolbar is built on that honest premise. Its own documentation says the tools are "one part of an accessible site — your content, your markup and your own testing matter at least as much". It gives visitors:
- 11 free tools: text size, a readable font, left-aligned text, high contrast, inverted colours, grayscale, a light background, underlined links, highlighted headings, hidden images and paused motion.
- 4 one-click profiles: Low vision, Dyslexia, Focus and Seizure safe.
- An Alt+A shortcut, a reset button and preferences remembered in the visitor's own browser — no cookies, no external service, nothing sent to your server.
- A panel that's itself keyboard operable, announces changes to screen readers and respects reduced motion.
Pro adds seven more tools (reading guide, reading mask, text spacing, content zoom, a dyslexia-friendly typeface, a large cursor, saturation) and toolbar branding.
Fix the site itself
These are the problems that matter most, and where to fix them in WordPress:
- Alt text. Every meaningful image needs a short description; decorative images need empty alt text. ExtenderX Pro's Alt Text Audit lists media library images with none.
- Headings. One H1 per page, then H2s and H3s in order. Don't pick a heading level for its size.
- Contrast. Body text needs enough contrast with its background — check your theme's link and button colours, not only the body text.
- Keyboard access. Unplug the mouse and Tab through the page. Every link, button, menu and form should be reachable and visibly focused. ExtenderX's free Skip to Content link and focus outlines help with two common theme gaps.
- Forms. Every field needs a visible label, and errors should say what's wrong in text, not only in red.
- Motion. Animations should respect the visitor's reduced-motion setting and be pausable.
- Media. Captions for video, transcripts for audio.
WordPress tools that find problems
From each plugin's WordPress.org readme as of October 27, 2026.
- Accessibility Checker by Equalize Digital — scans posts and pages for WCAG issues inside the editor.
- Web Accessibility (formerly Ally) — combines a visitor widget with a scanner that suggests fixes, and a statement generator.
- WP Accessibility — fixes common theme problems such as missing skip links and focus styles, with no toolbar.
Automated checkers catch part of the problems. Test with a keyboard and a free screen reader (NVDA on Windows, VoiceOver on Mac and iPhone) on your key pages.
Write an accessibility statement
A statement tells visitors what you've done, what you know isn't accessible yet and how to contact you for help. ExtenderX Pro's Accessibility Statement generator creates an editable draft page; the Web Accessibility plugin also has a free generator. Keep it honest — don't claim full conformance unless you've tested for it.
A sensible setup
| Job | Tool |
|---|---|
| Let visitors adjust the page | ExtenderX toolbar (free) |
| Skip link and focus outlines | ExtenderX (free) |
| Find issues in content | Accessibility Checker or Web Accessibility scanner |
| Find images with no alt text | ExtenderX Pro Alt Text Audit |
| Statement page | ExtenderX Pro or Web Accessibility |
| Confirm it works | Keyboard and screen reader testing |
For a side-by-side of toolbar plugins, see the accessibility toolbar comparison.