Backlinks, explained
What backlinks are, why they matter for SEO, how to earn good ones, and what to avoid.
If keywords and content are the visible side of SEO, backlinks are the invisible engine underneath. They're one of the strongest signals Google uses to determine which pages deserve to rank highly.
Quick summary
A backlink is a link from another website to yours. Google treats backlinks like votes of confidence — the more quality sites that link to you, the more trustworthy your site appears. One link from a respected, relevant site is worth far more than hundreds of low-quality links. Never buy links; it's against Google's policies.
What is a backlink?
A backlink (also called an inbound link or incoming link) is a link on another website that points to a page on your website.
For example: if a local business publication writes an article about small businesses in your city and links to your website, that's a backlink.
Why do backlinks matter for SEO?
Google's original breakthrough was a concept called PageRank — the idea that a page is more valuable if other pages link to it. Think of links as votes. A page with many high-quality links is seen as more authoritative than a page with few.
Google still uses links heavily in its algorithm. A site with many quality backlinks will almost always outrank a comparable site with few, even if the content quality is similar.
Not all backlinks are equal
The quality of backlinks matters far more than the quantity. Here's what makes a backlink valuable:
| Factor | What it means |
|---|---|
| Authority of the linking site | A link from a well-respected news site or government site is worth far more than a link from an obscure blog |
| Relevance | A link from a site in your industry is more valuable than an unrelated site |
| Editorial placement | A link placed naturally within an article is better than a link in a footer or sidebar |
| Anchor text | The words used for the link provide context about what's being linked to |
One excellent backlink from a trusted source can be worth more than 100 low-quality ones.
How to earn quality backlinks
Earn links, don't buy them
Buying backlinks is against Google's guidelines. It can result in a Google penalty that dramatically reduces your site's visibility. Focus on earning links through genuine value.
Legitimate ways to earn backlinks:
Create genuinely useful content. Content that educates, informs, or solves problems gets linked to naturally. Comprehensive guides, original research, free tools, and unique insights all attract links.
Get listed in industry directories and local directories. Many industries have reputable directories that link to member businesses. Local business directories and chamber of commerce listings provide valuable local citations.
Guest posting on industry publications. Writing a guest article for a respected industry blog typically includes a link back to your site. Focus on publications your customers actually read.
PR and press coverage. Getting mentioned in news articles, podcasts, or industry publications earns high-quality backlinks. Even local press coverage can be valuable.
Partner and supplier pages. If you work with other businesses, they may list you as a partner or case study on their site, which often includes a link.
Broken link building. If a resource you know well has gone offline, you can reach out to sites linking to it and suggest your equivalent resource as a replacement. (This is more advanced — we handle it if it's part of your SEO strategy.)
What to avoid
These tactics violate Google's policies and risk penalties:
- Buying links from link farms or link brokers
- Exchanging links excessively ("you link to me, I link to you")
- Spammy blog comment links or forum spam
- Mass directory submissions to low-quality directories
- Private blog networks (sites created purely to sell links)
Google has become very good at identifying these patterns.
How to check your backlinks
Google Search Console shows some of your backlinks under the "Links" report. For a fuller picture, tools like Ahrefs and Moz offer backlink analysis — we use these as part of SEO audits.
Common questions
Related guides
- What is SEO?
- SEO & content marketing
- Local SEO basics
- Technical SEO basics
- How to measure SEO results
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