NoFollow vs Robots Exclusion Checker (2026): which should you pick?

Pick NoFollow if

• Fits if you need to know whether links on a page pass on ranking credit
• Works for link builders confirming that a placed link isn't nofollow

Look elsewhere if

• Watch out: ugc and sponsored links get the same outline as nofollow, so you can't tell them apart
• Too light for audits, as it marks links on the page you're viewing and doesn't list or crawl them
• Skip it if you're on Safari, which IgorWare doesn't support until further notice
• Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply

Pick Robots Exclusion Checker if

• Fits if you need to know why a page isn't being crawled or indexed
• Works for checking at a glance whether a site blocks AI crawlers

Look elsewhere if

• Skip it if you're not on Chrome, as no other browser is named
• Too light for whole-site audits, since it reports on the URL open in the browser
• Not for you if you want the interface in a language beyond English, German, Spanish and French
• Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply

NoFollow

• Only Chrome and Edge are supported; IgorWare says its Safari version is not supported until further notice.
• UGC and sponsored links get the same outline as nofollow links, as its changelog notes.
• It outlines links in place on the page you are viewing rather than crawling a site or listing links in a report.
• The developer has not identified itself as a trader, so EU consumer rights do not apply, as the store listing notes.

Robots Exclusion Checker

• It is listed for Chrome only; the store listing names no Firefox, Safari or Edge version.
• It reports on the URL open in the browser, one page at a time, rather than auditing a whole site.
• The developer has not identified itself as a trader, so EU consumer rights do not apply, as the store listing notes.
• The interface comes in English, German, Spanish and French only.

NoFollow

Nofollow, UGC and sponsored outlines

Outlines links whose rel attribute is nofollow, ugc or sponsored; the three values share one style and cannot yet be told apart.

Followed and external links

Optional outlines for links with no nofollow attribute and for links that point to other sites.

Robots meta tag info box

Shows nofollow and noindex meta tags found for Googlebot, Googlebot-News, Bingbot, Slurp, msnbot, Teoma and Applebot.

Yandex noindex tags

Highlights the <noindex> HTML tag that Yandex and Rambler use to keep parts of a page out of their index.

Site filters and custom styles

Turn the extension on or off for listed websites, edit the CSS used for each outline, and export or import settings.

Robots Exclusion Checker

Robots.txt rule finder

When an Allow or Disallow rule affects the current URL, it shows that rule and the full robots.txt with the rule highlighted.

Meta robots and X-Robots-Tag

Flags index, noindex, follow and nofollow directives in the HTML and in the HTTP header, and shows the full header with exclusions marked.

AI bot check

Checks robots.txt against 14 AI bots from 6 companies, covering training, search indexing and live browsing, and adds an AI label to the icon when any are blocked.

Canonical mismatch warnings

Reads canonical tags from the HTML head and the HTTP header and turns the icon amber when the canonical URL differs from the current one.

Nofollow, UGC and sponsored links

Optionally highlights links with those rel values on the page, in colors you choose; off by default on new installs.

Search engine user-agents

Simulate what Googlebot, Googlebot News, Bing or Yahoo may access, chosen in settings. 404 pages are flagged in red.

NoFollow

• Free$0

  Link outlining, robots meta tag info box, site filters and custom styles, free for Chrome and Edge.

Robots Exclusion Checker

• Free$0

  All six checks, the user-agent switcher and link highlighting, free from the Chrome Web Store.