By Ajay Mishra, Team BeastBrowser

Keyword density is one of the simplest on-page SEO checks you can run: what share of your words does each keyword account for? Too little and your copy may read as unfocused; too much and you drift into the kind of keyword stuffing that search engines penalize.

BeastBrowser's Keyword Density Checker answers that question in seconds. Paste any article, product description, or page copy into the analyzer and it breaks down keyword frequencies, n-gram densities, word counts, and estimated reading time — right in your browser, with no account and no payment step.

TL;DR

  • Free with no signup. The analyzer runs directly in the page — paste text and get results instantly, with no account, no email, and no payment step.
  • Four live stats on every paste. Total Words, Unique Words, Characters, and estimated Reading Time recalculate as you type or paste.
  • A full keyword frequency table. Every keyword is listed with its count and density percentage, sorted so the heaviest terms sit at the top.
  • Built for quick content audits. The tool's own FAQ notes that most SEO experts recommend 1%–2.5% primary keyword density, with usage above 3% risking keyword-stuffing penalties.

Key facts

Detail Info
Tool BeastBrowser Keyword Density & TF-IDF Analyzer
What it does Analyzes keyword frequencies, n-gram densities, word counts, and estimated reading time of pasted content
Price Free
Signup None — the analyzer runs directly in the browser page

How to use it

  1. Open the tool at https://seo.beastbrowser.com/keyword-density-checker.
  2. Paste your article or web content into the "PASTE ARTICLE / WEB CONTENT" textarea. A sample text is pre-filled so you can see the analyzer working immediately.
  3. Watch the live stats — Total Words, Unique Words, Characters, and Reading Time update as you paste.
  4. Scroll to the "TOP KEYWORD DENSITY FREQUENCIES" table to review each keyword with its count and density %.
  5. Compare your primary keyword's density against the 1%–2.5% range cited in the tool's FAQ, and trim or expand usage if you land far outside it.

Who it helps

  • SEO specialists auditing page copy before it goes live.
  • Content writers checking they have not overused a target phrase across a long draft.
  • Bloggers and marketers who want a quick on-page check without installing software or creating accounts.
  • Editors comparing drafts — paste version A, note the numbers, then paste version B and compare.

Limitations

  • Pasted text only. The tool page offers no URL fetch, file upload, or page-crawl option — analysis is limited to what you paste into the textarea.
  • It describes your paste, not a live page. Whatever you paste is what gets counted, including the pre-filled sample text if you do not replace it.
  • Counts, not coaching. The analyzer reports keyword counts and densities; beyond the general FAQ guidance it does not rewrite your copy or give per-keyword recommendations.
  • No export or history. There is no visible save, export, or history option on the analyzer panel — results stay on the page for the current session.

FAQ

What does the Keyword Density Checker do?

It analyzes text you paste in and reports keyword frequencies, n-gram densities, word counts, and estimated reading time, with a table showing each keyword's count and density percentage.

Do I need to sign up to use it?

No. The analyzer runs directly in the page with no account, email, or login step.

Is it really free?

Yes — the tool page lists no price and no payment step for the analyzer.

What is a good keyword density?

The tool's own FAQ says most SEO experts recommend a primary keyword density between 1% and 2.5%, and that overusing keywords (above 3%) can trigger Google's keyword-stuffing algorithms.

Can it analyze a live URL?

No. There is no URL input on the tool page — you paste the content you want analyzed into the textarea.

What do the live stats show?

Total Words, Unique Words, Characters, and estimated Reading Time, recalculated live as you type or paste.

Can I analyze long articles?

No content-length limit is stated on the page; it reports full stats for whatever you paste into the textarea.

Try it now

Open the free Keyword Density Checker, paste your draft, and check your keyword balance in seconds — no signup, no cost.

Sources & Credits

  • Tool page, facts verified live on 2026-11-03: BeastBrowser Keyword Density & TF-IDF Analyzer — https://seo.beastbrowser.com/keyword-density-checker
  • Cover image: tool-keyword-density-cover-1200x630.png (1200×630), uploaded as this article's featured image.