1-Byte
Open tools

SEO tool · Backlinks

Backlink Checker & Compare

Paste backlink exports for one or two sites. We’ll clean them up, pull out the referring domains, and show you overlap, unique links and where the biggest gaps are.

Runs entirely in your browser · backlink data never leaves your device.
Sign in to your account
Input

Your site or the one you care about most.

Leave this blank if you only want stats for Site A.

Site A backlinks 0 lines
Site B backlinks (optional) 0 lines
We’ll deduplicate URLs automatically and focus on the referring domains to keep the comparison clean.
Output
Site A
0
backlinks · 0 referring domains
Site B (optional)
0
backlinks · 0 referring domains
Overlap
0
shared referring domains
0% of A · 0% of B
Domains only linking to A 0

Run an analysis to see domains that point at Site A. In single-site mode this will be your full referring domains list.

Domains linking to both 0

Shared referring domains will appear here once both sites have data.

Domains only linking to B 0

Paste backlinks for Site B to see where they have links that you don’t yet.

Top referring domains

Sorted by total backlinks to either site. In single-site mode, it’s effectively your top domains for Site A.

No data yet.
Domain A B Δ (B - A)
Paste backlinks and run an analysis to see the top referring domains table.

This helper is deliberately simple: it works from whatever exports you already have. Later we can layer on saved projects, tagging, and deeper metrics per domain.

Part of the 1-Byte SEO toolkit.

Tip: in compare mode, use “domains only linking to B” as a prioritised outreach list.

Back to tools hub