Guest Post Relevance Checker
Score the topical relevance between your niche and a prospect site before outreach, with the shared topics highlighted. Free.
💡 How to use
- Paste your niche keywords (or a page's text) on the left, and the prospect's content on the right.
- The tool measures topical overlap and gives a relevance score — higher means a better link fit.
- It's a quick relevance signal based on shared terms; runs entirely in your browser.
Free Guest Post Relevance Checker
Check how topically relevant a prospect site is before you pitch. Paste your niche keywords and the prospect's content, and get a relevance score plus the shared topics — so you spend outreach effort on sites where a link actually fits. Free, no sign-up, runs in your browser.
What this tool does
Relevance is the single biggest factor in whether a backlink helps you. A link from a site in your niche is far more valuable than one from an unrelated site. This tool compares your topic against a prospect's content, measures how much they overlap, and gives you a quick relevance score and a list of the shared topics, so you can qualify prospects before spending time on outreach.
How to use it
It is instant:
- Paste your niche keywords or a page's text on the left.
- Paste the prospect's homepage, About text, or a recent article on the right.
- Click Check relevance.
- Read the score and the shared topics to decide whether to pitch.
How relevance is measured
The tool breaks both texts into meaningful words (ignoring common stop words), then measures how many important terms they share relative to their vocabulary size. A high overlap means the two sites talk about the same things; a low overlap means they don't. The shared-topics list shows exactly which terms connect you, which is helpful for tailoring your pitch.
Why relevance matters for links
Search engines weigh contextual relevance heavily — a link surrounded by related content passes more meaningful signals and is less likely to look manipulative. Relevant links also send better referral traffic, because the audience already cares about your topic. Filtering prospects by relevance first means every outreach email you send has a real chance of earning a link that actually moves the needle.
Using the score
A strong score means the site is a great fit — go ahead and pitch. A moderate score means the site is related but you should check the specific section or category you'd be linked from. A weak score suggests the topical connection is thin, so a link there might look unnatural and is usually not worth pursuing. Combine this with our Domain Authority Checker to weigh relevance against authority.
Privacy
The comparison runs entirely in your browser from the text you paste — nothing is uploaded, logged, or stored. You can evaluate private prospect lists and unpublished content without any data leaving your device.
FAQ
Is this guest post relevance checker free?
How is the relevance score calculated?
What should I paste for each side?
Why does relevance matter for backlinks?
Is a high score a guarantee to pitch?
Is my content uploaded anywhere?
Does it read the prospect's live site?
Related tools
Pro tip: pair this tool with Link Attribute Consistency Checker and Domain Authority Checker for a faster SEO workflow.