Tools/Keyword Density & Readability Checker
Free tool

Keyword Density & Readability Checker

Paste your content, get word count, reading time, keyword density, and the most repeated phrases — nothing leaves your browser.

This tool takes a block of page content and, optionally, a target keyword or phrase, and returns word count, character count, sentence count, average sentence length, reading time, and — if you gave it a keyword — exactly how many times that phrase appears and what share of the total word count it makes up. It also surfaces the words you repeat most often, including ones you didn't set out to target.

It's built for anyone about to publish a page or reviewing one that's already live: a local service business owner writing their own service pages, someone checking copy a freelancer or agency delivered, or anyone auditing an older page that isn't performing. Running a draft through it before it goes live catches two opposite problems at once — content that's too thin to say much about anything, and content that repeats a phrase so often it reads unnatural.

Neither problem is really about hitting a specific density number. It's about writing a page that reads naturally to a person while still being unambiguous about what it's actually about — the numbers here are a sanity check for that, not a target to optimize toward.

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Avg words/sentence

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Reading time

How to use this tool

  1. If you're checking how well a page targets a specific phrase, type that keyword or phrase into the target keyword field — this step is optional if you just want general stats.
  2. Paste your full page content — headings, body copy, everything — into the page content box.
  3. Check the word count, sentence count, and average words per sentence to judge whether the page has enough substance and whether the sentences are readable.
  4. If you entered a keyword, look at its density percentage and raw count. Under roughly 2-3% is a reasonable range for most pages; higher than that is worth a second look.
  5. Scan the most repeated words list for anything that shows up far more than the rest — that's often an unintentional repetition rather than a deliberate one.
  6. Edit your copy outside the tool, then paste the revised version back in to confirm the numbers moved the way you expected.

What word count and reading time actually tell you

A very low word count usually means a page doesn't say enough to be useful — to a reader or to a search engine trying to figure out what it covers. There's no fixed minimum that applies to every page, but if a competing page on the same topic runs several hundred words longer than yours, that's worth noticing. Reading time is really just word count restated in a more human unit — useful mainly as a quick gut check on whether a page feels thin before you dig into the content itself.

Frequently asked questions

What keyword density should I aim for?
There's no magic percentage — Google doesn't publish or use a target density, and modern ranking systems evaluate topical relevance far more holistically than a raw keyword count. As a rough sanity check, most well-written pages naturally land somewhere under 2-3% for their primary term. If a number this tool shows looks high, it's more useful as a signal to re-read the content for awkward repetition than as a target to hit exactly.
Can keyword stuffing actually hurt my rankings?
Yes — unnaturally repeating a phrase to inflate its frequency reads as spam to both readers and Google's content-quality systems, and can suppress rankings rather than help them. The goal of checking density is the opposite of stuffing: making sure a page reads naturally while still being clearly about what it's about.
Does this tool send my content anywhere?
No — everything runs in your browser. The text you paste is never sent to a server, stored, or logged anywhere.
Is a lower reading level always better for SEO?
Not universally, but for most local service business content, yes — simpler, more direct writing tends to convert better and is easier for both readers and AI systems to parse and cite accurately. A legal or medical page may reasonably need more precise, technical language than a plumbing service page.

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