High Quality Backlinks: What Google Documents and What It Doesn't

A high quality backlink is a link from a relevant page that an editor chose to give, placed in the content where readers will see it, with anchor text that says what your page is about, and not marked sponsored or nofollow. That is the part Google documents. Most other items on the usual checklists, from a Domain Authority threshold to a traffic floor, come from SEO tool vendors. They're useful for sorting a long prospect list, but Google doesn't use them.

We read the seven top-ranking pages for "high quality backlinks" and tallied every quality signal they name. All seven say a good link comes from an "authoritative" or "trusted" site. None defines that, and none links to a single page of Google's documentation.

Short answers#

• What makes a backlink high quality? Relevance, editorial choice, in-content placement, descriptive anchor text, and no rel qualifier. Those five are in Google's docs.
• Does Domain Authority matter? Not to Google. Moz itself says Domain Authority "is not a Google ranking factor." It's a sorting tool.
• Are nofollow links low quality? They pass little or no ranking credit, but a nofollow link from a page your buyers read can still be valuable.
• How do I get high quality backlinks? Publish something worth citing and put it in front of people already writing about the topic. Five steps below.

What makes a backlink high quality, according to Google#

Google doesn't publish a link quality checklist. It does publish enough, across five documentation pages, to build one. Each trait below comes with the Google line it rests on.

1. The link was given, not created to rank. Google's spam policies define link spam as "creating links to or from a site primarily for the purpose of manipulating search rankings," and list buying links, excessive exchanges and keyword-stuffed guest posts as examples. A high quality link is the opposite: someone linked because the page helped their readers. Our white hat link building guide has a three-question test for this.

2. It's on a relevant page. Google's link best practices say "Google uses links as a signal when determining the relevancy of pages." Its SEO Starter Guide adds that links can connect "users (and Google) to another resource that corroborates what you're writing about." A link from a page on your topic tells Google what your page is about. A link from an unrelated page tells it much less.

3. It sits in the content with descriptive anchor text. Google says "Good anchor text is descriptive, reasonably concise, and relevant to the page that it's on and to the page it links to." Placement matters by contrast: "Widely distributed links in the footers or templates of various sites" are on the spam list. See anchor text optimization for what descriptive means in practice. Note that "optimized anchor text" in guest posts is also on that list, so descriptive is the goal, not exact-match.

4. It isn't qualified. Paid links must carry rel="sponsored" or rel="nofollow", and Google's 2019 announcement says all three attributes "are treated as hints about which links to consider or exclude within Search." A qualified link can still bring readers. It's just not a ranking vote. Dofollow vs nofollow links covers the details.

5. It comes from a page that has earned links itself. This is the real meaning of "authoritative." Google's ranking systems guide says PageRank "continues to be part of our core ranking systems," and PageRank measures links to the page that links to you. Google doesn't publish a score for it, which is why vendors built their own.

What the top-ranking guides say instead#

We took the seven top web-search results for "high quality backlinks" on 12 October 2026 and listed every trait each one gives for a good link. Five of the seven publishers sell link building, SEO services or an SEO tool.

Bar chart of how many of the seven top-ranking pages for high quality backlinks list each quality signal, sorted. Authoritative or trusted site (undefined): 7 of 7, no definition given. Relevant to your topic: 5 of 7, covered in Google's own documentation. Sends referral traffic: 4 of 7, not mentioned in Google's documentation. Editorially given, not placed: 3 of 7, covered in Google's own documentation. Placed in the main content: 3 of 7, covered in Google's own documentation. Descriptive anchor text: 3 of 7, covered in Google's own documentation. High Domain Authority score: 2 of 7, not mentioned in Google's documentation. Linking site has organic traffic: 2 of 7, not mentioned in Google's documentation. Dofollow, not nofollow or sponsored: 2 of 7, covered in Google's own documentation. From a new referring domain: 1 of 7, not mentioned in Google's documentation. Linking site is not a link farm: 1 of 7, covered in Google's own documentation. Hand count, 12 October 2026.

The most common signal is the one nobody defines. "Authoritative," "trusted" or "reputable" appears on all seven pages. Only one page puts a number on it: an NP Digital staffer quoted by Neil Patel says a good backlink comes from a site with "solid domain authority (DA 35+), consistent organic traffic of at least 1,000 visitors a month." No other page names a threshold.

Backlinko, which is owned by Semrush, goes the other way and says the vendor's own metric "isn't one of the main signals to check for backlinks." That's the most useful line in the set.

One proportioned bar splitting the 33 times the seven top pages name a backlink quality signal. 17 mentions, 52 percent, are signals Google's own documentation covers, such as relevance, anchor text and editorial links. 9 mentions, 27 percent, are signals Google's documentation never mentions: Domain Authority, the linking site's organic traffic, referral traffic and new referring domains. 7 mentions, 21 percent, are an undefined call for an authoritative site. Only one page gives a number: Domain Authority 35 or higher and at least 1,000 visitors a month.

Split all 33 signal mentions by source and 17 (52%) are things Google's documentation covers. Nine (27%) are signals it never mentions: Domain Authority, the linking site's organic traffic, referral traffic and new referring domains. The other seven are the undefined "authoritative." Nearly half of the standard advice can't be checked against anything Google has published.

Where Domain Authority and Domain Rating fit#

They're vendor estimates of trait 5. Moz says Domain Authority "is a search engine ranking score developed by Moz" and "is not a Google ranking factor and has no effect on the SERPs" (Moz). Ahrefs describes Domain Rating as "an Ahrefs metric that shows the relative strength of a website's backlink profile" (Ahrefs). Search Engine Journal collects several John Mueller posts saying Google doesn't use domain authority, including "We don't use domain authority at all in our algorithms."

So use them the way you'd use a credit score on a stranger: a quick filter on a list of 500 prospects, never the reason to accept or reject one link. A Domain Authority 20 trade blog that your buyers read beats a Domain Authority 70 site that publishes anything. Our domain authority guide covers what the score does and doesn't predict.

A checklist for vetting one backlink#

Ordered by evidence. Check the first five before you look at any score.

From Google's documentation:

• Would this link exist if Google didn't count links? If you paid or traded for it, is it marked sponsored?
• Is the linking page about your topic, or at least about something your page supports?
• Is the link in the body of the article, not a footer, sidebar, author box or sitewide template?
• Does the anchor text describe your page in plain words, without being stuffed with keywords?
• Does the linking page itself have links from other real sites?

Useful proxies (not Google's):

• Does the site get search traffic? A site losing traffic for a year is a warning.
• Would a reader actually click? A link that sends visitors is worth having for that alone.
• Is this a new referring domain for you, or the fifth link from the same site?
• Does the site sell links? Look for "write for us" price lists and hundreds of unrelated outbound links.

When you're checking an existing profile instead of a single link, use our backlink audit process.

How to get high quality backlinks in 5 steps#

Step 1: find out which links your competitors earned. Pull the referring domains of the three pages outranking you and keep only the links that pass the first five checks. Competitor backlink analysis shows how.

Step 2: build one page those sites would cite. Original data, a free tool or the clearest explainer on the topic. If you can't say why an editor would link to it, stop here and fix the page.

Step 3: pitch the people already writing about it. Find articles on the topic published in the last year and email the author with one specific reason your page helps their readers. See link building outreach.

Step 4: work the editorial formats. Digital PR, broken link building and expert quotes for journalists all produce in-content, editorially chosen links.

Step 5: measure links that pass, not link counts. Track new referring domains that meet the first five checks each month. One of those is worth more than any number of directory listings.

Is one high quality backlink worth more than many low quality ones?#

Yes, and Google's own wording explains why. It doesn't need to penalize a pile of weak links. Its December 2022 link spam update says SpamBrain works "to neutralize the impact of unnatural links," so "any credit passed by these unnatural links are lost." Low quality links usually just count for nothing. The cost is the time and money you spent on them instead of on the few links that count. If you think you're holding bought links, our toxic backlinks guide covers when a disavow file is worth it.

The limits of this evidence#

Our seven pages come from a US web search on one day, not a verified Google results page, and we skipped one user-posted LinkedIn article. Sorting each trait into a bucket is our judgment from a hand reading. Whether Google's docs "cover" a signal is also our call: relevance and placement are covered partly, and "editorial" only by its opposite, link spam. Google's statements on domain authority are posts on X, which we cite through Search Engine Journal because we couldn't load the originals.

Count the links you'd be proud of#

A high quality backlink isn't a score above a line. It's a relevant page whose editor chose to send readers to you, in words that describe what they'll find. Every tool metric is an attempt to guess at that from the outside. You can check it directly.

Frequently asked questions#

How many high quality backlinks do I need? There's no general number. Count the referring domains that pass the first five checks on the pages ranking above you for your keyword. That's your real target.

Is a link from a big news site always high quality? Not always. Some large publishers add nofollow or sponsored to outbound links, and syndicated or sponsored sections often aren't editorial. A news link still helps with visibility and trust, but check the rel attribute before you count it.

Can I buy high quality backlinks? Not as ranking links. A paid link that passes credit is link spam under Google's policy, however good the site. You can pay for sponsorships with rel="sponsored". See buying backlinks.

What is the difference between a backlink and a high quality backlink? Any link from another site to yours is a backlink. It becomes high quality when it's editorial, relevant, in the content, described clearly and unqualified. Most links meet some of those, not all.