Map the landmarks that power assistive navigation.
Reveal the regions, landmarks, and ARIA roles on any page, catch a missing main or navigation landmark, and ensure a logical document structure.
Everything you need for solid structure
Real-time landmark analysis for designers, developers, and QA — no source-reading required.
Landmark map
Visualizes banner, nav, main, complementary, and contentinfo regions at a glance.
Missing-landmark alerts
Flags pages with no main or navigation landmark for keyboard and screen-reader users.
ARIA role audit
Checks roles and labels so every region is announced correctly.
Region overview
Counts each landmark type so you can spot duplicates and gaps fast.
From install to answer in seconds
Open on any page
Click the EqualWeb icon in your toolbar while viewing any website you want to check.
Reveal the structure
All landmarks and ARIA roles on the page are detected automatically.
Close the gaps
Add the missing landmarks so navigation is logical and complete.
Manual checking vs. Semantic Structure
Manual checking
With Semantic Structure
Built around the success criteria that matter
Semantic Structure maps to the WCAG criteria for structure and relationships, so your landmarks match what assistive tech and auditors expect.
Free. Forever.
Every EqualWeb checker extension is completely free — no trial, no credit card, no account. Install it and start testing in seconds.
Add to Chrome — FreeNeed full-site compliance?
The free extension catches issues page by page. The EqualWeb platform automates remediation, monitoring, and audits across your entire site — and readers of this page get 10% off.
Questions, answered
Is Semantic Structure really free?
Yes — 100% free with no trial, license, or account. The full EqualWeb platform is a separate paid product for organizations that need site-wide automation.
Does it send my data anywhere?
No. All analysis runs locally in your browser — the pages you check never leave your machine.
Which browsers are supported?
Chrome and all Chromium-based browsers, including Microsoft Edge, Brave, and Opera.
Do I need to be an accessibility expert?
Not at all. Results are shown in plain language with clear verdicts and the exact WCAG criteria behind them.
What is the 10% discount code for?
It applies to the EqualWeb platform — automated remediation, continuous monitoring, and full audits for teams that need site-wide compliance.
Add Semantic Structure to Chrome
Free, private, and ready in seconds. Start testing today.