SEOMURAI Documentation

Reach external SEO validators with a single click.

The Tools tab bundles curated direct links to the most important external validators along with a few internal helper functions, so you do not have to hunt for the right URL every time. See the documentation overview.

Free in every SEOMURAI plan.

What the Tools tab in SEOMURAI does

Not every check can sensibly be rebuilt inside a browser extension. For deep technical validation it is faster and more honest to jump straight to the place that counts as the official source: the W3C validator for HTML and CSS, Google PageSpeed Insights for performance, the Rich Results Test for structured data, or the Schema.org validator for JSON-LD types. The Tools tab collects these direct links in one place and passes the current URL automatically.

In addition, the tab contains small internal helper functions that run directly in SEOMURAI, such as quick conversion and checking utilities. The sections below explain what the tab is best used for and how to fit it into your workflow.

When this menu is especially useful

  • When you need an official, authoritative HTML or CSS validation, for example for audit reports or client communication.
  • When you want to test structured data in more depth and need more than the preliminary detection in the Tech SEO tab.
  • When you want to hand a PageSpeed Insights report to your developers or keep it on record.
  • When you do not want to memorize every validator URL or maintain them all as bookmarks.
  • When you want to re-run a validation quickly after a fix, without typing the URL again.

Step by step

1. Open the Tools tab

Click Tools in the left menu of SEOMURAI. You will see two sections: Internal Checks with helper functions that run inside the extension, and External Validators with direct links to established services.

2. Choose the right validator

In the External Validators section you will find curated links to:

  • W3C HTML Validator: Complete markup validation against the official W3C specifications.
  • W3C CSS Validator: Stylesheet validation against the current CSS standards.
  • Google PageSpeed Insights: Performance analysis with Core Web Vitals values and concrete optimization recommendations.
  • Rich Results Test: Google’s official test for structured data and how it appears in the search results.
  • Schema.org Validator: Detailed validation of your JSON-LD types against the Schema.org vocabulary.

3. The URL is passed automatically

When you click an external validator, a new browser tab opens with the currently analyzed URL already filled in. You do not need to copy or retype the URL; the validator starts the check immediately. The only exception: external services cannot load local or password-protected addresses, so in those cases you need to run the evaluation manually in the respective tool.

4. Apply the findings and check again

Read the results in the respective validator, apply the corrections in your CMS or source code, and then return to your page. Refresh the browser tab and open SEOMURAI again; you can then call up both the extension’s internal score and the validator once more to confirm the improvement.

5. Internal Checks for quick assistance

The Internal Checks section contains small utilities that work directly in the extension without any external connection. They complement the main analysis with frequently needed micro tasks and keep you from switching to another application for every small check.

New since version 1.7: the right-click context menu

Since version 1.7.0 the idea behind the Tools tab also lives in the browser context menu. Right-click any page or link and you will find two SEOMURAI groups that take you to external destinations or straight into the extension, without opening the panel first.

  • Open in SEO tool: opens the current page or the right-clicked link in twelve external destinations: Google site: search, Wayback Machine, SimilarWeb, PageSpeed Insights, Rich Results Test, Schema.org Validator, Search Console (overview and performance), Ahrefs, Moz, Majestic and Semrush.
  • Analyze with SEOMURAI: jumps straight into the Dashboard, Schema, Headings or Links analysis, or prefills the DataForSEO Backlinks and AI Visibility tabs.
  • Selection actions: select text on a page and search the selection on Google (FREE) or send the selection to SEOMURAI AI (PRO).

FREE users only see the FREE entries. The context menu comes with two new settings toggles, both enabled by default, so you can switch it off if you prefer a lean browser menu.

Frequently asked questions

Tips and frequently asked questions

Are my URLs sent to third parties?

Yes, as soon as you click an external validator. That is the nature of these services: the W3C validator, Google PageSpeed Insights, the Rich Results Test and Schema.org load the page server-side in order to analyze it. If you do not want that, use only the internal SEOMURAI modules, which work without any third parties.

Do the external validators also work for localhost or staging?

No. External services need a publicly reachable URL, otherwise they cannot load the page. For local environments the internal SEOMURAI modules do most of the work. For structured data, you can copy the JSON-LD from the Tech SEO tab and paste it into the Schema.org validator as code.

Why is there no integrated Lighthouse report?

A full Lighthouse analysis requires headless Chrome execution and cannot be reproduced reliably inside the browser extension sandbox. Google PageSpeed Insights uses the same Lighthouse engine behind the scenes and gives you a complete, authoritative report without any detours. The direct link in the Tools tab is therefore the clean solution.

Can I add my own validators or tools?

In the current version the list is deliberately curated so that recommendations stay consistent. If a tool you consider essential for every audit set is missing, we welcome your feedback through the contact form. Beyond that, your own bookmark collection in the browser always remains a sensible addition.

Which validator is the right one for structured data?

For the SEO effect in the Google search results, the Rich Results Test is the decisive validator: it shows whether Google actually considers your markup for an enhanced presentation. The Schema.org Validator is stricter and checks formal correctness against the complete vocabulary. In practice both are worthwhile: first Schema.org for clean syntax, then Rich Results for visibility.

What is the difference between the Tools tab and the right-click context menu?

The Tools tab lives inside the SEOMURAI panel and passes the currently analyzed URL to curated external validators. The right-click context menu, new in version 1.7.0, works without opening the panel: the group Open in SEO tool sends the page or a link to twelve external destinations, Analyze with SEOMURAI jumps directly into the matching analysis tab, and selected text can be searched on Google (FREE) or sent to SEOMURAI AI (PRO). Two new settings toggles, both enabled by default, control the context menu entries.

More topics in the documentation

Jump straight to the detail page for another menu.

Want to try this feature directly in your browser?

Install SEOMURAI, open any page and click through the validators in the Tools tab.

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Version 1.7 · July 2026
New in SEOMURAI 1.7: measure your visibility in AI answers, Google Trends, Sitemap Validator, a greatly expanded context menu and 15 interface languages. View the changelog →