Broken links and errors
Pages that return 4xx or 5xx, and the exact pages that link to them, so you know what to edit.
1,000 pages free · no install
A full SEO crawler, right in Chrome
Crawl your whole website from your own browser. Find every broken link, redirect, duplicate and orphan page, and get a plain-language fix for each one.
What it finds
Every problem that holds a site back
The crawler follows your internal links and your XML sitemap, then checks every page with the same 60+ checks as the page audit.
Redirects
Internal links that point to redirecting URLs, HTTPS pages that send people back to HTTP, and sitemap entries that redirect.
Duplicates
Duplicate titles and meta descriptions, plus near-duplicate pages that share about 90% of their main text.
Orphan pages
Pages that are in your sitemap but that no internal link points to, so search engines rarely find them.
Sitemap vs. crawl
Sitemap URLs that fail, redirect or are noindex, and indexable pages that are missing from the sitemap.
Canonicals and indexing
Canonicals that point to redirects or errors, noindex pages listed in the sitemap, and pages blocked by robots.txt.
Depth and speed
Pages more than four clicks from the home page and pages whose server takes more than 1.5 seconds to answer.
On-page issues, site-wide
Missing titles, long titles, missing alt text, heading problems and thin content, grouped across all pages.
AI readiness
Missing FAQ markup, pages without authors or dates, and content that only appears after JavaScript.
Polite by design
Crawls that never get you blocked
Hosting firewalls block crawlers that hammer a server. ROC SEO behaves like a careful visitor.
- Follows robots.txt and its Crawl-delay
- One page at a time, 1 page per second by default
- Slows down by itself when a server answers 429 or 503
- Runs from your computer, so there is no server bill and no shared IP address
- Keeps working when you switch to other tabs
Reports
Share results in one click
Every crawl gives you three exports, plus the history in your free account.
- Excel workbook: summary, issues, every URL, links to errors, redirects
- HTML report you can print to PDF for a client
- CSV of all pages with status, title, words, inlinks and score
- Health score with the formula shown, never a black box
How it works
From install to report in three steps
1. Open your site
Install the extension, open your website and click the ROC SEO icon. The page audit runs at once.
2. Crawl the whole site
Press “Crawl whole site”, check the address and speed, and start. 1,000 pages take about 17 minutes.
3. Fix what matters
Issues are sorted by severity and number of pages. Each one explains why it matters and how to fix it.
Also see the AI citation checker and all features.
Crawler questions
Is the ROC SEO crawler really free?
Yes. Crawls of up to 1,000 pages are free and need no account. A free account keeps your crawl history online. Bigger crawls (up to 25,000 pages) come with the Pro plan.
Will crawling slow down or block my website?
No. The crawler fetches one page at a time at 1 page per second by default, follows robots.txt and its Crawl-delay, and slows down by itself if the server answers 429 or 503.
Does the crawler run JavaScript?
No. It reads the HTML your server sends, like most search and AI crawlers do. To see a single page after JavaScript, use the ROC SEO page audit, which also compares the two.
How is the health score calculated?
Health = 100 − (% of pages with an error) − 0.5 × (% of pages with a warning), never below 0. The formula is printed on every report.