OnCrawl Chrome extension now available!

The Oncrawl extension provides valuable informations on the status of any web page by measuring its content (SEO tags, duplicate and near duplicate content, structured data, social metas, linking… and many other amazing things).
Get a real full SEO report: useful to detect errors on a page and optimize it.


SEO audits should be easy and actionable!

That’s why me made this Chrome extension! In one glance, spot any content issues on your web pages and highlight specific SEO metrics with X-Rays. Use it for free on any websites and login to OnCrawl to access complete reports.

Boost your rankings now!

Just one click and…


get any Onsite SEO information you want, on any website!

What’s in?

Title evaluation

Description evaluation

H1 evaluation

Number of Hn

Authority Flow

Web Analytics tag

Number of Alt Missing

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Meta robots evaluation

Canonical (matching, not matching, not set)

Robots.txt evaluation

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Main tags

Title evaluation

Description evaluation

H1 evaluation

Number of Hn

Web Analytics tag

Number of images

Tags duplication

Title: duplicated or not

Description: duplicated or not

H1: duplicated or not

Open Graph

Open Graph evaluation

Twitter Cards

Twitter Cards evaluation

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Number of words

Text to code ratio

Structured Data

Structured data evaluation

Main Ngrams

N-grams repartition

Similar Content

Similar content by percentage

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Flow popularity


Total inlinks

Inlinks in follow

Inlinks in nofollow

Sample inlinks follow

Sample inlinks nofollow


Total outlinks

Outlinks in follow

Outlinks in nofollow

Internal 3xx

Internal 4xx

Internal 5xx



Top inlinks anchors

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Load time


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Highlight following items on the page:

  • Hn
  • Images with alt missing
  • Structured data
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