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Public check library

See exactly what Netrix checks—and why.

This library comes from the same rule files as the audit engine. Browse 276 signals and issue checks across 33 groups, then open any check to see what it measures and what Netrix can do about it.

What’s in the library

Rules
276
Groups
33

Seeing a check here does not mean every crawl can measure it—or that Netrix can deploy the fix. Each audit shows what it was able to cover.

Browse by area

Start with the part of the site you’re looking into.

Accessibility

56

WCAG Level A

WCAG Level A check, run by axe-core against the rendered page during the crawl. Fixing it removes a barrier for people using assistive technology.

Accessibility

28

Best practice

Accessibility best practice check, run by axe-core against the rendered page during the crawl. Fixing it removes a barrier for people using assistive technology.

Accessibility

6

WCAG Level AA

WCAG Level AA check, run by axe-core against the rendered page during the crawl. Fixing it removes a barrier for people using assistive technology.

Accessibility

3

WCAG Level AAA

WCAG Level AAA check, run by axe-core against the rendered page during the crawl. Fixing it removes a barrier for people using assistive technology.

Technical

1

AMP

Invalid AMP pages won't be served by Google. Fix validation errors or remove AMP.

Technical

15

Canonicals

The canonical target returned an HTTP client or server error. Point to the intended accessible canonical URL.

Technical

10

Content

Add more content to improve SEO relevance and user experience.

Technical

6

Performance

Google treats LCP over 4 seconds as poor. The usual causes are an oversized hero image, render-blocking CSS, or a slow server response.

Technical

2

External links

Investigate if too many external links might dilute SEO or hamper user focus.

Technical

3

Heading length

The recommended H1 length is from 20 to 70 characters

Technical

9

Headings

Every page should have one H1 tag for proper SEO structure and user clarity.

Technical

11

Hreflang

Hreflang tags must be reciprocal. Each page must link back to all alternates.

Technical

11

Images

Image CDNs installed as plugins do not host a copy of your picture — they proxy it, serving your own file from their address. Search engines credit the image to that address rather than to you, every image on the page depends on a third party staying up, and Netrix cannot resize a file it does not control. Where the address proves which of your files it is serving, Netrix can point the page back at your own copy.

Technical

1

Indexability

Confirm if noindex is intentional; remove if you want this page to rank.

Technical

4

Site structure

A locally indexable HTML page supplied in an authorized URL inventory was not reachable through the measured navigation graph from this crawl's original root. Review internal linking, including disconnected clusters. This covers only the supplied inventory, not every URL in a CMS or search index. Partial crawls and missing on-host navigation targets remain unknown.

Technical

2

Page size

This measurement is the decoded HTML response, not the page's combined asset weight. Reduce generated markup or move inline data, styles, and scripts into separate resources.

Technical

1

Legacy SEO

Meta keywords are obsolete and ignored by search engines. Remove to reduce page size.

Technical

3

Internal links

Anchor text tells search engines what the linked page is about. Image-only or empty links pass the link but none of the context.

Technical

5

Meta descriptions

The recommended length is from 70 to 320 characters

Technical

11

Pagination

Pagination loops can trap crawlers. Fix rel=prev/next implementation.

Technical

5

Mobile

Without a viewport meta tag phones render the page at desktop width and scale it down, so text is unreadable without pinching. Google treats this as a mobile usability failure.

Technical

1

Readability

Simplify language to improve user experience & accessibility.

Technical

1

Redirects

Redirect chains slow page loads and dilute link equity. Update to direct redirects.

Technical

5

JavaScript rendering

The source title is present but no nonblank title remains in the qualified rendered document. Check JavaScript head updates.

Technical

3

Robots

Create a robots.txt file to guide search engine crawlers and specify sitemap location.

Technical

14

Security

Use SSL if you are interacting with sensitive user data.

Technical

9

Sitemaps

XML sitemaps should contain maximum 50,000 URLs. Split into multiple sitemaps.

Technical

5

Social metadata

Open Graph is optional. This response declares OG metadata but omits a nonblank title, type, URL or image. Complete it if social previews are intended.

Technical

14

Status codes

Internal pages are not responding. Check server status and page availability.

Technical

5

Structured data

Structured data tells search engines what this page is about in a form they can read directly, which is what a rich result is built from. Netrix can write it for a page whose business has a verified Google Business Profile, using the details already published there.

Technical

7

Page titles

The recommended length of the header is from 30 to 60 characters

Technical

11

URLs

Remove or replace non-ASCII characters for best SEO practices, or ensure they're properly encoded.

Technical

8

HTML validation

Every HTML page must have a <head> tag to contain metadata, title, and styles.

Follow what happened

Found, approved, applied, and verified each mean something different.

  1. 01Detected

    The crawl found evidence that matched the rule.

  2. 02Suggested

    Netrix prepared a possible fix for review.

  3. 03Approved

    A person accepted the proposed change.

  4. 04Applied

    A supported connector accepted the write.

  5. 05Verified

    Netrix found the new value on the public page.

  6. 06Resolved

    A later crawl no longer finds the issue.

Put the checks to work

Turn crawl evidence into fixes your team can review.

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