Competitor research tools: what each kind tells you
·4 min read
Competitor research tools come in two kinds. Official sources, like Google's Ads Transparency Center, the Meta and LinkedIn ad libraries, Keyword Planner and Search Console, show real data but only one slice each, and Search Console only works on your own site. Estimate-based tools model a competitor's rankings, traffic and links from crawled data, so they cover any domain but give you approximations.
Pick the tool by the question you are asking, not by the vendor.
Competitor research tools by question
| Question | Official or no-cost source | Estimate-based kind | Main limit |
|---|---|---|---|
| Who are my competitors? | Google results for your own keywords | Keyword overlap lookups | Overlap finds search rivals, not offline or ads-only rivals |
| What do they rank for? | Keyword Planner for volumes only | Competitor keyword lists | Rankings come from periodic crawls |
| How much traffic do they get? | None for other sites | Traffic estimates from rankings | Organic Google only, modeled not measured |
| Who links to them? | Search Console Links, your site only | Backlink indexes | Every index misses links |
| What ads do they run? | Google, Meta and LinkedIn ad libraries | Ad lookups built on top | No spend outside political ads, no bid keywords |
| Who do AI answers cite? | Search Console AI report, your site only | Citation tracking for common prompts | Sampled prompts, few engines |
Notice the pattern. For your own site, official data answers most questions exactly. For a competitor's site, only the ad question has an official answer.
Who are my competitors, and what do they rank for?
Start with Google itself. Search your ten most important keywords and count which domains keep showing up on page one. Our guide to finding your competitors covers the manual method and the judgment calls.
Keyword overlap tools do the same count across every keyword a domain ranks for. Our Competitor Finder lists the sites that share your Google keywords in the country you choose, and splits close rivals from large general sites. It will not find businesses that compete with you offline or only through ads.
For what a rival ranks for, Keyword Planner gives you search volumes for keywords you type in, but it will not tell you who ranks for them. Accounts that spend little on ads usually see volume ranges rather than exact figures. A competitor keyword tool fills the gap. Our Competitor Keywords tool lists the keywords a domain ranks for with volume, difficulty and cost per click. Reading a competitor's keyword list explains what to do with it.
How much traffic do they get, and who links to them?
Nobody outside a company can see its analytics. Every traffic figure for another site is an estimate built from its rankings, search volumes and typical click rates by position, and it covers organic Google search only. Our post on the website traffic checker walks through the model and its blind spots.
Links work the same way. Search Console's Links report shows who links to you, from Google's own data. For anyone else you need a backlink index, and each index crawls a different slice of the web, so totals from two tools never match. Our Backlink Finder lists the 100 strongest sites linking to a domain with a spam estimate for each, and competitor backlinks covers which of them you can realistically get.
What ads do they run?
This is the one question with good official answers for competitors. Google's Ads Transparency Center lets you search by advertiser or website and see each ad's format, region and when it last ran. The Meta Ad Library shows active Facebook and Instagram ads, and the LinkedIn Ad Library shows a year of a company's ads. Outside political and issue ads, none of them shows what an advertiser spends, and none shows which keywords it bids on.
Competitor Google Ads shows how many ads a domain runs, in which formats, how long each has run and the copy of its longest-running text ads. Meta Ad Finder and LinkedIn Ad Finder do the same for those platforms. The ad library guide compares the three libraries in detail.
Who do AI answers cite?
For your own site, Search Console's Generative AI performance report shows impressions in AI Overviews and AI Mode by page, country, device and date. It shows impressions only, and it cannot show any competitor.
For citations across sites, you need a tool that tracks AI answers for common prompts. Our AI Citation Finder shows which pages Google's AI Overviews and ChatGPT cite for a topic, or how often they cite a given domain. It tracks only those two engines, and only questions people ask often, so a niche brand may show few results. That costs 160 credits a run, and an empty result still costs credits because the data lookup itself is charged.
Size up a competitor's domain in one run
Domain Overview answers the traffic and links questions together for any public domain. Enter a website and a market, and it returns how many Google keywords the whole domain ranks for, split by position, its estimated monthly visits from Google and what those visits would cost as ads. It also shows the keywords it pays for with estimated ad spend, how many sites and pages link to it, a link rank from 0 to 1,000, and the average spam score and nofollow share of those links.
All of it is an estimate, and it covers the whole domain, not one page. It does not list the keywords or links behind the totals. Competitor Keywords and Backlink Finder do that. Domain Overview costs 50 credits a run, and a run that finds neither search nor link data is refunded.