Backlink gap analysis tool
Postly Rank Backlink Gap compares the referring domains of your site and your competitors and shows the sites that link to them but not to you. Those domains are your most realistic link-building prospects. It's for SEOs and businesses planning outreach based on evidence instead of guesswork.
Free plan, no credit card. Already have an account? Open Backlink Gap in Postly Rank.
Who is Backlink Gap for?
- Businesses wondering why a competitor outranks them
- Link builders building an outreach list
- Agencies preparing a competitor report
What does Backlink Gap do?
Prospects by tab
Best (link to all competitors but not you), Weak, Strong, Shared, Unique and All, with a score filter.
Join Postly Score per domain
Sort prospects by the strength of the linking site in our link graph.
Per-domain link counts
See how many links each prospect gives every site you compare, and expand to the linking pages and anchors.
How Backlink Gap works
Enter your domain and competitors
Each as a root domain, subdomain, exact URL or subfolder.
Find prospects
Start with the Best tab: sites that already link to every competitor.
Plan outreach
Open each prospect's linking pages and export the list on paid plans.
Where does the data come from?
Referring domains come from the link graph of the Join Postly Index, the same data as the Backlink Checker. Small or new sites may show few links until we crawl more of the web.
Learn more about our crawler on the JoinPostlyBot page.
Backlink Gap: Free vs Rank Pro vs Rank Agency
Free forever, or Rank Pro at $15/month and Rank Agency at $49/month (USD).
| Backlink Gap | Free | Rank Pro | Rank Agency |
|---|---|---|---|
| Competitors you can add | 1 | 4 | 4 |
| Rows per tab | 25 | 200 | 200 |
| Export |
Limits are per workspace per day unless stated. Rank Pro and Rank Agency are in early access: ask at info@joinpostly.com.
Backlink Gap FAQ
What is a backlink gap?
The set of websites that link to one or more of your competitors but not to you. Those sites already link to pages like yours, which makes them good outreach prospects.
How many competitors can I compare in Backlink Gap?
On Free you can compare your site with 1 competitor and see the top 25 rows per tab. Rank Pro and Rank Agency compare you with up to 4 competitors and show 200 rows per tab.
Where do Backlink Gap prospects come from?
From the link graph of the Join Postly Index: links that JoinPostlyBot found while crawling the web. A prospect is listed when at least one of the sites you compare has a link from it.
Related Postly Rank tools
Try Backlink Gap free
Postly Rank works with every Join Postly plan, including Free. No credit card needed.