Compare Authority Across Domains before you pay
Paste a list of domains and see the domain authority and backlink spam score for each one side by side, sorted by authority. Up to twenty domains at one price.
- Up to 20 domains, one price
- Authority and spam together
- Location independent
Run the tool right here
Compare authority and spam score for up to 20 domains in one run, at one price.
- What it costs $0.098
- Data source DataForSEO
The short answer
When several sites offer you an advertorial or a link, the only way to choose properly is to measure them all against one yardstick at one moment. That is exactly what this tool does: it puts the authority and spam score of all of them into one table so the decision has numbers rather than a feeling behind it.
The column that actually changes the decision is the second one, not the first. Domain authority is what the seller tells you themselves, and usually tells you correctly. The spam score is what they do not tell you. A site that has sold links to anybody who paid keeps an acceptable authority while its spam score climbs, and taking a link from it gives you nothing.
The simple rule that works in practice is this: filter by spam score first, then sort by authority. That is, drop every domain with a high spam score out of the list, however good its authority and however tempting its price, and then pick the highest authority among what remains.
There is a second use that gets less thought: building an us-versus-competitors table for a report. Put your own domain in alongside four or five main competitors and get one table showing your relative position at a glance. Since the price is flat, that costs the same as checking a single domain.
Where the data comes from
Two DataForSEO calls (bulk ranks and bulk spam score) joined on the domain name. Both are location-independent. Something we see often in practice: Iranian sponsored-post sites frequently have mediocre authority but a high spam score, and it is that second column that changes the decision.
When it helps
Before buying a sponsored post or a backlink, to see which site is actually worth its price. Or to build a "us versus competitors" table in a client report.
Where it does not help
Neither of these two numbers is a Google figure, and neither guarantees that a link from that site will have an effect. What this table does not measure at all is topical relevance, and that usually matters more than both columns: a link from a site writing about your own industry, even at middling authority, is worth more than one from a general news site with high authority. The real traffic of that site is also invisible here; a site can have good authority and effectively no readers, and then nobody reads your advertorial even if its link is sound.
One thing we learned using it
The pattern we keep seeing in the Iranian advertorial market is exactly this: middling authority with a high spam score. The seller writes the authority figure into the offer and not the second one, and the buyer usually does not ask. That single column is what changes the decision, and that is why this tool prints both side by side rather than only the first.
What it costs
No monthly subscription. You top up a wallet and the price of a run is printed on the button before you press it; if you never run it, nothing is deducted.
Questions about this tool
From what spam score should I worry?
There is no definitive number, and anyone claiming there is is passing off a machine estimate as a certainty. The right approach is comparison: submit the several domains you have been offered together and set aside the ones that sit noticeably above the rest within that same list.
How many domains can I check at once?
Up to twenty per run at one flat price. So rather than checking them one by one, always submit the complete list of offers you have received in one go.
Does it work for Iranian domains?
Yes. Both metrics are computed independently of location, so a .ir domain returns a real number too, unlike some other tools that stay empty for Iran.