Backlinks are links from other websites to yours. If a gardening blog links to your guide on pruning roses, that's a backlink to your site. Search engines treat backlinks as a signal: when relevant, trustworthy sites link to a page, that's evidence the page is useful. That's why backlinks remain one of the main ways Google decides which pages deserve to rank.
Not every backlink counts the same. A single link from a respected site in your field can matter more than hundreds from unrelated or spammy pages, and some links don't count at all. This guide explains what backlinks are, how they work, what separates a good one from a bad one, how to see the links you already have, and how to earn your first ones.
What is a backlink?
Definition
A backlink (also called an inbound link or incoming link) is a hyperlink on one website that points to a page on a different website. For the site receiving it, each backlink is a potential vote of confidence that search engines can use when ranking pages.
Under the hood, a backlink is an ordinary HTML link on someone else's page:
<a href="https://yoursite.com/rose-pruning-guide">how to prune roses</a>Each part carries information search engines use:
- The href (target URL) is the page receiving the link. Links can point to your homepage or to any deeper page.
- The anchor text ("how to prune roses") is the clickable text. It tells readers and search engines what to expect on the other side. Our anchor text guide explains why a natural mix matters.
- The rel attribute, if present, qualifies the link.
rel="nofollow",rel="sponsored"orrel="ugc"ask search engines not to treat it as an endorsement. A link with none of these is called "dofollow." See dofollow vs nofollow links. - The surrounding page, meaning its topic, quality and where on the page the link sits, shapes how much the link is worth.
A few related terms you'll see everywhere:
| Term | What it means |
|---|---|
| Referring domain | A unique website linking to you. One site linking from 50 pages = 50 backlinks, 1 referring domain. |
| Linking page | The specific page that contains the link. |
| Target page | The page on your site the link points to. |
| Link equity | Informal name for the ranking value a link can pass. Sometimes called "link juice." |
| Backlink profile | All the links pointing to your site, taken together: sources, anchors, link types, growth over time. |
For more definitions, see the SEO glossary.
Backlinks vs internal links vs outbound links
The same HTML tag plays three different roles depending on where it sits and where it points:
| Link type | From | To | What it does for SEO |
|---|---|---|---|
| Backlink (inbound) | Another website | Your site | An outside endorsement; helps discovery, relevance and trust |
| Internal link | A page on your site | Another page on your site | Helps crawling and spreads value between your own pages |
| Outbound link | Your site | Another website | Helps readers; citing good sources is normal and healthy |
You fully control internal and outbound links. Backlinks are the one type you can't simply add yourself, which is exactly why search engines give them weight: they're harder to fake.
Why backlinks matter for SEO
Links as votes: a short history of PageRank
In 1998, Stanford students Larry Page and Sergey Brin published the paper describing the search engine that became Google. Its key idea, PageRank, treated the web like academic citations: a page linked to by many other pages, especially important pages, is probably important itself. The model imagined a "random surfer" clicking links forever; the pages that surfer lands on most often score highest.
That idea made Google's results dramatically better than keyword-matching search engines of the time, and it also created an industry of people trying to manufacture links. Google spent the next decade fighting back. Nofollow arrived in 2005 to tackle comment spam. The Penguin update in 2012 targeted manipulative link profiles, and since 2016 Penguin has run as part of the core algorithm, generally devaluing spammy links rather than demoting whole sites. Google stopped showing public PageRank scores in 2016, but link-based signals descended from the original idea are still part of how it ranks pages.
What backlinks do for you today
- Relevance. Links from sites about your topic, with descriptive anchors and surrounding text, help Google understand what your page is about and who considers it useful.
- Trust. Google's own explanation of how Search works names whether other prominent websites link to or refer to content as one of the factors it uses to judge whether information is well trusted. A link from a respected site lends you some of its credibility.
- Discovery. Search engines find new pages by following links. A new page with no links pointing to it can take much longer to be crawled and indexed.
- Referral traffic. Real people click links. A well-placed link on a busy page can send customers directly, whatever its SEO value.
Do backlinks still matter in 2026?
Yes, but differently than a decade ago. Raw link counts matter much less than they used to, and Google is far better at ignoring links that were obviously manufactured. What still moves rankings is a profile of relevant links from real sites that point to genuinely useful pages. In competitive niches, it remains rare to see a page ranking at the top with no meaningful links at all. In low-competition niches, a strong page on a trusted site can rank with very few.
It also takes time for a backlink to have an effect. Google has to recrawl the linking page, notice the link, and fold it into its picture of your site. That can take days for a frequently updated site and weeks for a quiet one, and ranking changes usually lag behind that. Judge links over months, not days.
Links aren't everything
Good vs bad backlinks: a quality checklist
The difference between a backlink that helps and one that's worthless (or worse) comes down to whether it looks and works like a genuine recommendation. Run any link, existing or prospective, through this checklist:
Backlink quality checklist
0/10Authority scores such as DR or DA can help you compare sites quickly, but they're third-party estimates, not Google metrics. A relevant site with a modest score is usually a better link than an off-topic site with a high one. Our guide to domain authority covers how to read these scores without being misled by them.
A quick example: which link is better?
Imagine your rose-pruning guide gets two new links in the same week:
| Link A | Link B | |
|---|---|---|
| Linking site | A small gardening blog | A general web directory |
| Authority score | Modest (say, 25) | High (say, 70) |
| Placement | In a post about caring for roses, mid-paragraph | In a sitewide footer list of 200 links |
| rel attribute | None (followed) | nofollow |
| Anchor | "this step-by-step pruning guide" | "Click here" |
| Would a reader click it? | Yes, it's exactly what they're reading about | Almost certainly not |
Link A wins on every point that matters except the authority score: it's relevant, editorial, followed and useful to a real reader. Link B has a bigger number attached but is unrelated, buried and nofollowed. When you evaluate links, read the whole row, not just the score.
What makes a backlink bad
Bad backlinks are links that exist mainly to manipulate rankings: paid links that aren't marked sponsored, private blog networks, automated link spam, mass directory submissions, irrelevant sites with link-for-sale pages, and excessive "link to me and I'll link to you" exchanges. Google's spam policies list all of these as link spam.
Here's the reassuring part: Google says its systems neutralize many spammy links automatically, so a few junk links pointing at your site (which every site collects) are usually just ignored. Problems tend to arise when there's a clear pattern you created, like a run of bought links with keyword anchors. If you're worried, read our guide to toxic backlinks before reaching for the disavow tool, which Google says most sites don't need.
Types of backlinks
Backlinks come from many places. Each type has a typical value and a typical rel attribute, though individual links always vary:
| Type | Example | Usually followed? | Typical value |
|---|---|---|---|
| Editorial | A writer cites your guide because it's the best source | Yes | Highest: earned and relevant |
| Guest post | A link in an article you wrote for another site | Often | Medium–High if the site is relevant |
| Resource page | A curated list of useful links on a topic | Usually | Medium |
| Press and news | A journalist quotes you or cites your data | Mixed | High, plus brand exposure |
| Partner and supplier | A vendor's customer page or a dealer locator | Usually | Medium, very relevant |
| Business profile and directory | Google Business Profile, industry directories | Often nofollow | Low direct, but foundational |
| Forum and UGC | A link in a forum reply or comment | Rarely (ugc/nofollow) | Low direct, some traffic |
| Social | Links in posts and profiles | Rarely | Traffic and discovery |
| Sponsored | A paid placement or sponsorship link | Should be sponsored | Traffic and visibility, not ranking credit |
| Image | Someone embeds your chart and credits you | Usually | Medium |
A healthy profile is a mix. Real sites collect editorial links, profile links, a few nofollow mentions and the occasional sponsorship. A profile made entirely of one type, especially followed links with keyword anchors, looks engineered because it is.
How to see your backlinks
You have three practical options, and most site owners use all three for different jobs.
- 1
Google Search Console's Links report (free, from Google)
Verify your site in Search Console and open Links in the left menu. Under external links you'll see top linked pages, top linking sites and top linking text, each exportable. It's the only report based on Google's own data, but it shows a sample rather than every link, and it doesn't say which links Google actually counts. - 2
Third-party backlink tools (free tiers and paid)
SEO tools run their own crawlers and build their own link indexes. They add useful detail: when a link was first seen, whether it's followed, the anchor, and authority estimates. Each index covers only part of the web, so two tools will report different numbers. Compare trends within one tool rather than numbers across tools. - 3
Check a specific page directly
When you want to confirm one link, such as a guest post that just went live or a partner who said they'd add you, use our backlink checker. It fetches the page and reports whether it links to you, whether the link is followed, nofollow, sponsored or ugc, the anchor text, where on the page it sits, and whether the page is noindexed.
Don't rely on the link: operator
link:yoursite.com in Google no longer gives you a useful list of backlinks. Use Search Console instead.How many backlinks do you need?
Honest answer: it depends on the keyword, and anyone who gives you a universal number is guessing. A local plumber targeting "emergency plumber in [town]" might need a handful of good local links. A site trying to rank for a competitive national term might need hundreds of referring domains built up over years. The useful question is "how many do I need for this keyword?" Here's how to estimate it.
- 1
Search your target keyword and note the top results
Use a private window, or just look at the results while signed out. Focus on the pages ranking in positions 1–10, not their homepages. - 2
Count referring domains to each ranking page
Use any backlink tool and look at referring domains to the specific URL, not the whole site and not total backlinks. Write the numbers down. - 3
Look at relevance and quality, not just the count
Twenty links from sites in the niche is a different bar than twenty from random directories. Skim the top linking sites for a couple of the results. - 4
Factor in everything else
Pages also rank on content quality, search intent match and site-wide trust. If your page is clearly better and your site is established, you may need fewer links than the leaders. - 5
Set a target and a timeline
Aim to get within range of the lower-ranked page-one results first. Then decide whether the keyword is worth the gap or whether an easier one would pay off sooner.
Here's an illustrative example of how that plays out for two keywords on the same site:
| Keyword A: niche how-to | Keyword B: broad commercial term | |
|---|---|---|
| Referring domains to page-one results | Roughly 3 to 25 | Roughly 80 to 600 |
| Relevance of those links | Mixed, many unrelated | Mostly niche and news sites |
| Realistic plan | Better content plus a few relevant links | Long-term campaign, or target a narrower variant first |
Referring domains beat total links
How to get your first backlinks
If your site has few or no links yet, start with the links you can get this week, then build toward the ones that take effort. In rough order:
- Claim your profiles. Business profiles, social accounts and the relevant directories in your industry. They're mostly nofollow, but they establish that you exist.
- Ask the people you already work with. Suppliers, partners, software vendors with customer pages, associations you belong to.
- Find mentions you're already getting. Search for your brand name and ask anyone who mentioned you without linking.
- Publish one genuinely useful resource. A guide, tool, template or piece of original data that other people in your niche would want to reference.
- Promote it. Resource page outreach, guest posts and broken link building are the dependable early tactics.
Where to go next, depending on your situation:
- How to get backlinks: 25 strategies compared, with outreach templates and a prioritization framework.
- Link building for new websites: a week-by-week 90-day plan.
- Free backlinks worth getting: the no-budget options, and which ones to skip.