Keyword gap analysis
The keywords your competitors have and you do not
Enter your domain and a competitor’s. The keywords only they rank for, which is the gap, and the keywords you both rank for load together, up to 500 of each, with volume, difficulty, cost per click, intent and both positions. Select the opportunities and save them to a project.
- Only they rank, and both rank
- Up to 500 keywords each
- Save the gaps to a project
$0.06 – $0.36 per comparison, shown before it runs. What it costs
Find who to compare with
Not sure who your competitors are? The competitors tab lists the sites that rank for the same keywords as yours. Click one for the keyword gap.
How it works
How to use the keyword gap
- 1
Search
A keyword, a domain or a page, with the country, city or state, and language next to it.
- 2
See the price
The cost of the whole search shows before anything runs. A repeat is free.
- 3
Get the whole picture
Everything loads together. The address holds the search, so you can share it.
Use it to
Keyword gap analysis use cases
Find content to write
Keywords a competitor ranks for and you do not are topics your audience searches that you have not covered.
Defend shared keywords
See every keyword you both rank for and where each of you sits.
Prioritise by difficulty
Sort the gap by volume and difficulty to find the keywords you can win first.
Build a content plan
Save the gaps to a project, then group them into pages.
What it costs
Keyword gap analysis pricing
$0.06 – $0.36 per comparison. You pay the data provider for the lookups a search runs, from your own key, and see the price before it runs. A repeat within a week is free. Keyword data is country-level.
| Part of the search | Price |
|---|---|
| Keywords only they rank for (up to 500) | $0.03 – $0.18 |
| Keywords both rank for (up to 500) | $0.03 – $0.18 |
Search data
Start with $5 of free search data
Keyword, ranking and backlink data in OpenSEO comes from YepAPI. Sign up there and new accounts get $5 in free credit, for a limited time. That is enough to try every tool before you spend anything.
- 1
Sign up at YepAPI
New accounts get $5 in free credit, for a limited time.
- 2
Copy your API key
It is on your YepAPI dashboard once you sign in.
- 3
Paste it into OpenSEO
During account setup, or later in Settings. Every tool works from there.
The free credit is YepAPI’s limited-time offer and may end. After it, you pay YepAPI per lookup, at the price OpenSEO shows before each one runs. See pricing
SEO glossary
What is a keyword gap?
A keyword gap is the set of keywords that one or more competitors rank for but your site does not, or ranks for much lower. Keyword gap analysis compares the rankings of several domains side by side to find those keywords. It is a quick way to find proven topics that already bring competitors traffic.
Related SEO terms
A content gap is a topic or keyword your audience searches for that your site doesn’t cover, often one your competitors already rank for.
Keyword research is finding the search terms your audience uses, then judging which ones are worth targeting by demand, difficulty and intent.
Keyword difficulty is an SEO tool’s 0-100 estimate of how hard it is to rank on Google’s first page for a keyword, based on the pages already there.
Search intent is the reason behind a search: what the person wants to know, find or do. Matching it is one of the most important parts of SEO.
Topical authority is a site’s perceived depth and expertise on a subject, built by covering it thoroughly and being cited on it.
Keyword gap analysis FAQ
What is a keyword gap analysis?
Comparing the keywords two sites rank for to find the ones a competitor has and you do not. Those gaps are topics with proven search demand that your site does not cover yet.
Can I compare more than one competitor?
Run one comparison per competitor; each is cached for a week, so switching back and forth is free. In a project, the Competitors page keeps your domain filled in.
Do I need a project?
No. The SEO tools work on their own, in any market you pick. Keywords you find can be saved to a project in one click when you want to track them.
Can I share a result?
Yes. The search, the market and the open tab are all in the page address, so a link or a bookmark opens the same view. Anyone opening it runs the search with their own key; a repeat of something already looked up is served from the cache for free.
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In the app: Keyword ideas
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Domain Rating, referring domains and backlinks of up to 10 sites side by side, to see how strong a site is next to its competitors.
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In the app: Page analyser
Authority, links and traffic of any page, its title, description and headings checked, the keywords it ranks for and its strongest backlinks.
Backlink checker
Totals, monthly history, strongest backlinks, referring domains, anchors, top linked pages and link intersect for any domain or page.
SEO competitor analysis
In the app: Competitors
Organic competitors of any domain, the keyword gap with any of them, and the sites that rank most for a list of keywords.
Backlink gap analysis
In the app: Backlink gap
The websites linking to every one of 2 to 20 competitors, with their authority, for a ready list of link building prospects.
AI Overview checker
Check up to 100 keywords at once for Google AI Overviews and every other SERP feature: which sites each AI Overview cites, and whether yours is one.
AI visibility checker
Ask ChatGPT, Gemini, Claude and Perplexity the same question with web search on, and compare the sources each one cites, in order. Is your site among them?
Local rank checker
Google Maps rankings for any keyword across a grid around a city: the top 20 businesses at every point, and any business’s rank in each cell.