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Glossary · Links & authority

backlink

Also called inbound link

Reviewed 31 Oct 2026 By Madiha Fatima 3 min read Check it yourself: yes, free

3 min
Definition

A backlink is a link on someone else's website that points to a page on yours. Search engines read each one as a vote of confidence: a site that others choose to reference is probably worth showing. The more trusted and relevant the site doing the linking, the more that vote counts.

Not every backlink helps. A link from a local newspaper or a trade association is worth more than a hundred from directories nobody reads, and links you paid for can cost you rankings rather than earn them.

Short version: a link from another site, counted as a vote for yours.
Why it matters for your business

The signal you cannot
fake from inside your site.

Most of what decides a ranking lives on your own pages: the words, the speed, the titles. Backlinks are the exception. They are other people's opinion of your site, which is exactly why Google leans on them so heavily and why a competitor with a plainer website can sit above you for years. A law firm quoted in the local paper, a dental clinic listed by the regional health board, a Shopify store reviewed by a hobby blog: each of those is a backlink, and each is hard for a rival to copy.

It is also where most of the money in SEO proposals goes and where most of it is wasted. "Fifty high-authority backlinks a month" usually means fifty links from sites built to sell links, which Google has spent two decades learning to ignore. When a proposal leads with a link count, ask to see three of the sites the links would come from. If you would not want your business name on them, you do not want a link from them either.

The useful question is not how many backlinks you have but how many different real websites link to you. That is the referring domain count, and it is the number worth tracking in a monthly report.

Example

A dental clinic with two links
and a rival with two hundred.

What the clinic owner sees

A two-practice dental clinic. Its website has two backlinks: one from the regional dental association's member list and one from a local newspaper piece about a free children's check-up day.

dental-association.org/members → yourclinic.com local-news.com/free-checkups → yourclinic.com
What Google sees

Two links from sites it already trusts, both about dentistry or the clinic's town. The rival clinic down the road bought a package of two hundred links from directories and blogs that exist only to sell links. Google discounts most of them and may hold the rest against the site. Two earned links beat two hundred bought ones, and the clinic with two is the one that keeps rising in the map pack.

How to check it on your site

Four checks, nothing to pay for.

Tick each one as you go. 0 of 4 checked on your site.

  1. Open the Links report in Search Console

    In Google Search Console, open Links in the left menu. "Top linking sites" lists every site Google knows links to you. A healthy small business list has local, industry and news sites on it. A list full of sites you have never heard of, in languages you do not speak, is a sign of spam links or a bought package.

  2. Run a free backlink checker

    Ahrefs and Moz both offer a free backlink checker that shows the top links to any domain. Paste your own site in, then a competitor's. You are not after the score, you are after the names: which real websites link to them that could link to you.

  3. Click five of your own backlinks

    Pick five from the Search Console list and open the pages. Is your link in an article someone wrote, or in a footer alongside forty other businesses? The first kind is doing work. The second is not, and if you paid for it, you were sold something Google ignores.

  4. Ask what a proposal's links actually are

    If an agency promises a number of backlinks a month, ask for the addresses of three they built for another client. A good answer is three readable pages on relevant sites. A refusal or a spreadsheet of domain scores is your answer too.

Related terms

Usually in the same sentence.

Read next

Where this shows up in practice.

Pricing & transparency The fees agencies hide

Link packages billed as "outreach" are one of them. How to read a proposal that leads with a link count.

 SEO How long SEO takes

Earned links are the slow part of the timeline. This explains what month three looks like against month twelve.

 Service SEO & AI search

Link earning is part of the rolling monthly work, with every site named in the report.
Related service

Earning links from real, relevant sites is built into the SEO service, and every link we earn is named in the monthly report. Prices are on the price list, not on a call.

See the SEO service
Reviewed by Madiha Fatima, founder of 99creatix

Every entry in this glossary is written and checked by the person who runs the agency, reviewed at least once a quarter and dated. Last reviewed 31 October 2026.

Spotted an error or a term we are missing? Tell us and it is fixed within the week.

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