There is no fixed limit on how many external links per page is good for SEO. Google removed the old guidance of keeping pages under 100 links years ago, so context and quality now decide the right number, not a hard cap. Link out as often as it genuinely helps the reader, whether that is two links or twenty.
What matters is that each link points to a relevant, trustworthy source and does not turn the page into a wall of ads or affiliate tags. Below is what Google has actually said, when links start to hurt, and practical numbers by page type.
What Google has actually said about outbound links
Google once suggested keeping pages to a reasonable number of links, around 100, but that advice was about crawl practicality on old hardware and was dropped. Google representatives have since said there is no penalty for a specific link count, and that linking to good sources can be a sign of quality. The current position is simple: link naturally to sources that help users, and do not buy or sell links that pass ranking value. Quality and intent matter far more than the raw number on the page.
When too many external links hurt
External links hurt when the pattern looks manipulative rather than helpful. Warning signs include long lists of unrelated links, paid links that pass value without a nofollow or sponsored tag, and affiliate pages stuffed with tracking links and little real content. Excessive links can also dilute the reader’s attention and send people away before they act. The problem is never the count by itself. It is links that serve the page owner instead of the reader, or links that break Google’s rules on paid placement. Keep every link earning its place and you stay safe.
Do external links help SEO?
Yes, linking out to authoritative sources can help SEO. It supports your claims, improves the reader experience, and gives search engines context about your topic. There is no evidence that a relevant outbound link drains ranking power in any way you should worry about. In my testing across sites I manage, pages that cite strong sources tend to build trust faster with readers, which shows up as longer visits and more shares. Treat outbound links as part of good writing, not as something to ration or fear.
How to mark a link, in Google’s current terms
The count is not the thing to worry about. How you mark the links is, and Google’s current documentation is more specific than the advice most posts repeat.
There are three values, and each has a job.
rel=”sponsored” is for advertisements and paid placements. This is the one most people get wrong, because for years the standard advice was to use nofollow on paid links. Google now names sponsored as the value for this, with nofollow kept only as an accepted legacy option. If you run affiliate links, this is your attribute.
rel=”ugc” is for user generated content, meaning comments and forum posts. Google notes you can drop it for contributors you trust and want to reward, which is a nuance almost no one uses.
rel=”nofollow” is the catch all, for when neither of the above fits and you would simply rather Google did not associate your site with the destination or crawl to it from your page.
You can combine them as a space or comma separated list, so rel=”ugc nofollow” is valid, and useful for a comment link you particularly do not trust.
Two details worth knowing. Google says links carrying these attributes will generally not be followed, which is deliberately softer than the old absolute rule, since these became hints rather than directives in 2019. And marking a link does not hide the destination page from Google, which can still find it through sitemaps or links elsewhere.
The practical upshot for a normal blog: editorial links to sources you chose need no attribute at all. Affiliate and paid links get sponsored. Comment links get ugc, which most WordPress setups already add for you.
Practical guidelines by page type
The right number depends on what the page is for. Use these as sensible ranges rather than rules.
- Blog post: two to ten external links to sources, studies, or tools you reference. Enough to support the content without sending readers away constantly.
- Product or landing page: keep external links minimal, often zero to two, since the goal is to keep the visitor moving toward one action.
- Resource list or roundup: many external links are expected and useful, since the whole point is to point people to other places. Twenty or more is fine here.
Match the link count to the reader’s goal on that page and you will rarely go wrong. For deeper context on link strategy, see our guide to the best SEO tools and the common blogging mistakes that quietly cost traffic. Getting your pages found first is also worth reviewing in our steps to submit your website to search engines.
A working number, since you came here for one
“There is no fixed limit” is true and unsatisfying. Nobody searches this question hoping to be told it depends.
The figure most editorial guidelines land on is roughly two to six external links per thousand words. On a two thousand word article that is about four to twelve outbound links.
Research or reference pieces sit above that comfortably, because citing sources is the point of them. A product page sits well below it.
Treat it as a sanity check, not a target. If you are far under, you are probably asserting things you could be sourcing. If you are far over, the page has likely become a list of links wearing an article as a costume.
Neither is a penalty. Both are usually a symptom of a page that has drifted from what it was meant to do.
The old hundred link rule is worth understanding rather than repeating. It came from a time when crawlers had a practical limit on how much of a page they would fetch, so it was a technical constraint rather than a quality judgement.
That constraint is long gone, which is why the number was retired. Anything above a hundred outbound links on an ordinary article page is still worth a second look, not because of a rule, but because normal articles do not do that.
Count and check them, because nobody does
Most people have no idea how many external links their pages carry, and the number is usually higher than they would guess once navigation, footer and widgets are included.
Counting is quick. A site crawler will list outbound links per page across the whole site, and for a single page your browser can do it: view the page source and count the links pointing off your domain.
The useful output is not the total, it is the outliers. One page with sixty outbound links in a site that averages six is telling you something.
Then check they still work, which matters more. External links rot. The site you cited three years ago has been redesigned, sold, or has quietly dropped the page you linked to.
A reader who clicks a citation and lands on a 404 has learned something about how current your article is, and so has anyone assessing whether the page is maintained.
Run a broken link check across the site once or twice a year. It is one of the few maintenance jobs that is fully mechanical, takes an afternoon, and improves pages you would otherwise never revisit.
Fix the ones worth fixing by pointing at the new location or an equivalent source, and simply remove the link where the claim stands fine without it.
Summary
How many external links per page is good for SEO comes down to relevance, not a number. Google has no set limit, links to strong sources can help, and problems only start when links look paid or manipulative. Use a handful on blog posts, keep landing pages focused, and let resource lists run long. Link for the reader first, and the SEO takes care of itself.
Frequently asked questions
Do external links hurt SEO?
External links do not hurt SEO when they point to relevant, trustworthy sources. They only cause problems if they are paid links passing ranking value without a proper tag, or long lists of unrelated links that look manipulative. Used naturally, outbound links tend to help both readers and search engines.
Should external links be nofollow?
Most editorial links to good sources should stay normal follow links. For paid and affiliate links, Google now names rel=”sponsored” as the value to use, with nofollow accepted as a legacy option rather than the recommendation. Comments and forum links take rel=”ugc”, and the values can be combined, such as rel=”ugc nofollow”. Adding nofollow to every outbound link is unnecessary and does not help your rankings.
Do outbound links pass PageRank away?
Outbound links do share a small amount of link value, but this is normal and not something to manage obsessively. Google designed the web around links, and citing sources is expected. The tiny effect is far outweighed by the trust and context a relevant outbound link adds to your page.
How many internal links per page?
There is no strict limit on internal links either. Add as many as genuinely help readers move to related content, often three to ten on a blog post. Internal links spread ranking value through your own site and keep visitors engaged, so use them freely with descriptive anchor text.
What rel attribute should affiliate links use?
rel=”sponsored”. Google’s documentation names sponsored as the value for advertisements and paid placements, which includes affiliate links, and treats nofollow as an accepted legacy option rather than the current recommendation. If your affiliate plugin still applies plain nofollow, that is not a problem, but sponsored is the more accurate signal.
Does nofollow stop Google indexing the linked page?
No. Google says links with these attributes will generally not be followed from your page, but the destination can still be discovered through sitemaps or links on other sites. The attribute controls what your link passes and whether Google crawls from you, not whether the page exists in the index.
How many external links per 1,000 words is right?
Most editorial guidelines land on roughly two to six external links per thousand words, so about four to twelve on a two thousand word article. Research and reference pieces sit comfortably above that because citing sources is the point of them, while product pages sit well below. Treat it as a sanity check rather than a target: far under usually means you are asserting things you could be sourcing, and far over usually means the page has become a list of links.
Where did the 100 links per page rule come from?
From a time when crawlers had a practical limit on how much of a page they would fetch, so it was a technical constraint rather than a quality judgement. That constraint is long gone and Google retired the guidance years ago. More than a hundred outbound links on an ordinary article page is still worth a second look, not because a rule forbids it, but because normal articles do not do that.