Does Nofollow still affect crawling without passing on PageRank?

Why did Google change the nofollow behavior for crawling?

Historically, nofollow blocked both crawling and the transmission of PageRank. For several years, Google has gradually transformed this attribute into a hint: an indication that Googlebot can choose to follow or ignore. The goal? To gain flexibility in discovering new URLs, even if the webmaster does not wish to pass on authority.

This evolution is in line with a logic where Google wants to maximize its indexing coverage without diluting ranking signals. In other words, the engine reserves the right to explore what it considers relevant, regardless of strict site instructions. This aligns with its desire for total control over the web graph.

What does "hint for crawling" really mean?

A hint is a suggestion — not an order. When you place a nofollow on a link, you indicate to Google that you do not recommend this URL, but the crawler may still decide to visit it if it seems useful. In practice, this means that a URL discovered via nofollow can appear in the index.

But be careful: indexing does not mean PageRank transmission. This is where many practitioners get stuck. A page can be crawled and indexed without receiving any authority signal from the pointing link. Google now clearly separates discovery and qualitative assessment.

Is PageRank completely blocked by nofollow or are there exceptions?

Officially, the transmission of PageRank via nofollow remains null. Google claims that this ranking signal does not pass through these links, even if crawling is allowed. Yet, on the ground, some SEOs observe that nofollowed pages from high-authority sources seem to rank better than others without any backlinks at all.

Is this indirect PageRank, a diffuse "trust" effect, or merely statistical noise? [To be verified] — Google remains vague on the exact mechanisms. What we do know is that a nofollow link can still generate direct traffic and thus positive behavioral signals, which also matters in the ranking equation.

• Nofollow has become a hint, not a blocking directive for crawling
• A URL discovered via nofollow can be indexed, but without automatic PageRank transmission
• Google separates discovery (crawling) and qualitative assessment (ranking)
• Behavioral signals from nofollow links (traffic, engagement) can indirectly influence ranking
• The official documentation remains vague on edge cases and possible exceptions

Is this statement consistent with field observations?

Let's be honest: Google's theory doesn't always match practice. We regularly observe pages that rank better after receiving nofollow mentions from high-authority sites — Wikipedia, moderated forums, quality directories. If PageRank strictly didn’t pass, these correlations shouldn’t exist.

Several hypotheses. Either Google is lying (unlikely), or there are other signals than pure PageRank that transit despite nofollow: trust, topicality, co-citation. Or perhaps nofollow is only applied to 80-90% of the juice, with the rest leaking anyway. Impossible to determine without internal data. What we know is that zero nofollow links = worse than a mixed profile with some natural nofollow.

What concrete risks are there for managing the crawl budget?

If Googlebot can now crawl URLs discovered via nofollow, it means that your crawl budget is no longer entirely under your control. Did you think you could block certain sections with nofollow? Google may still visit them, especially if they generate traffic or engagement signals.

The result: you might find yourself with crawled pages that you did not want to prioritize. Robots.txt and meta robots remain the only hard barriers — nofollow is no longer one. If you manage a large site with thousands of facets or parameters, rely on disallow and not on nofollow to protect your crawl budget.

Should you still use nofollow to sculpt PageRank?

PageRank sculpting as we practiced it before 2009 is dead — Google killed it by allowing juice to “leak” even on nofollow links. However, using nofollow to signal low-trust links remains relevant: comments, user-generated content, affiliate links. Here, you protect your reputation, not your juice.

On the other hand, systematically nofollow-ing your internal links to “force” Googlebot towards certain pages? Useless and risky. You lose natural linking without gaining anything in prioritized crawling. It's better to focus on click depth, silo architecture, and XML sitemaps. Nofollow is for external and doubtful links — not to steer your own site.

What should you concretely do with internal and external nofollow links?

First rule: stop nofollow-ing your strategic internal links. If you want a page to rank, it needs to receive internal juice through dofollow links. Internal nofollow is only useful for isolating low-quality content (T&Cs, legal mentions, login pages) or managing risky content (forums, user spaces).

For external links, keep nofollow on links you don't control: comments, UGC, widgets, dubious partners. But if you cite a reliable and relevant source, a dofollow sends a trust signal to Google — and it can even improve the topicality of your page. Systematic nofollow on all outgoing links is an outdated and counterproductive practice.

How do you check that your site is not suffering from parasitic crawling via nofollow?

Open Google Search Console, Exploration Statistics section. Analyze the URLs crawled over the last 90 days and compare with your target structure. If you see pages that you thought were blocked by nofollow appearing in the logs, it means Googlebot decided to visit them anyway.

Another technique: cross-reference your server data (Apache/Nginx logs) with Search Console. Identify nofollowed URLs that receive visits from Googlebot. If they consume crawl budget without providing SEO value, move up a notch: disallow in robots.txt or meta noindex. Nofollow alone is no longer sufficient to block them.

What mistakes should you avoid with the new interpretation of nofollow?

First mistake: believing that nofollow = total invisibility for Google. A nofollowed URL can be indexed, analyzed, and even ranked if it receives other signals (mentions, direct traffic, indirect dofollow backlinks). Don’t count on nofollow to hide sensitive or duplicate content.

Second mistake: removing all nofollow links thinking you'll regain juice. If these links point to low-quality or spammy content, you risk diluting your overall trust. Nofollow remains a signaling tool for trust — don't throw it out the window. Third pitfall: ignoring crawl budget. On a large site, every visit from Googlebot counts. If nofollowed pages are massively crawled, adjust your robots.txt strategy.

• Audit your nofollowed internal links — remove the attribute from strategic pages
• Keep nofollow on risky content (UGC, comments, external widgets)
• Check in Search Console the URLs crawled via nofollow and adjust robots.txt if necessary
• Don’t rely on nofollow to block crawling — use disallow or noindex
• Cross-reference server logs and Search Console to detect parasitic crawling
• Test a mixed outgoing link profile (dofollow to reliable sources, nofollow to the rest)