Find sites linking to your competitor — but not to you.
Enter a competitor and your own domain. We return the referring domains pointing at the competitor that haven't linked to you yet — the highest-ROI link-prospecting list you can build.
Need this for 1,000 domains?
The same data is available via the REST API — pay only for what you use, credits never expire.
# Same data, programmatically — first 100 credits free on signup
curl "https://api.rankparse.com/v1/link-intersect?domain_a=competitor.com&domain_b=yourdomain.com" \
-H "X-API-Key: rp_your_key"About this tool
Link intersect — sometimes called a "link gap analysis" — is the most efficient outreach workflow in SEO. Instead of cold-pitching every blog you can think of, you start with sites that have already proven they link to companies in your space. If they linked to your competitor, they'll consider linking to you with the right pitch.
Ahrefs popularized this workflow with their multi-domain "Link Intersect" report behind a $129+/month paywall. We expose the same data — sourced from Common Crawl's link graph — for free, with up to 100 prospects per check.
How it works
We pull every referring domain for the competitor and every referring domain for your site, then return the set difference: sites linking to the competitor but not to you, sorted by how many links they pass to the competitor (your strongest pitches first).
Outreach playbook: for each prospect, find the page that links to your competitor → identify what made it linkable (a stat, tool, guide) → pitch your equivalent (or better) asset. Conversion rates on this list typically beat cold outreach by 5–10x.
Anonymous users get 5 free checks per day. Sign up free for 25/day. Programmatic access via /v1/link-intersect on the REST API.
Frequently asked questions
- How is this different from Ahrefs Link Intersect?
- Same idea, same data shape. Ahrefs uses their own crawler with more frequent updates and supports comparing up to 10 domains at once. We use Common Crawl (quarterly refresh, but enormous coverage) and currently support a 2-domain compare. The free tier is the obvious differentiator.
- Can I compare more than 2 domains?
- The free tool is limited to one competitor vs your domain. The /v1/link-intersect API endpoint takes 2 domains today; multi-domain support is on the roadmap.
- Why are some prospects missing?
- We sample up to 100,000 referring domains per side. Sites with massive link profiles (Wikipedia, Amazon, Reddit) may have prospects beyond our sample. For very large sites, the top results are still the highest-value outreach targets.
- What's a good outreach hit rate from this list?
- 5–15% reply rate is typical with a personalized pitch (mentioning the specific page that linked to your competitor and what your equivalent asset offers). 1–3% reply rate is typical with a generic 'we have similar content' pitch. Personalization is non-negotiable.
- How fresh is the link data?
- The current dataset is built from Common Crawl January–March 2026. New crawls ship every quarter — link prospects don't go stale fast.