Zokilos

On-Page Keyword Checker

Checks a URL for how well it targets a specific keyword or phrase

Checks title, meta description, H1/H2, URL slug, opening text, keyword density, and image alt text.

What Is an On-Page Keyword Checker?

An on-page keyword checker looks at a single page and reports where your target keyword actually shows up — title, headings, URL, opening text, body content, and image alt text — so you can see if the page is really targeting that phrase or just loosely related to it.

How to Check Keyword Usage on a Page

1

Enter the page URL.

2

Enter the keyword or phrase you're targeting.

3

Press "Check" and review each result.

Is This Tool Free?

Yes — there's no paywall, no watermark, and no sign-up required.

What This Tool Checks

  • Title tag
  • Meta description
  • H1 heading
  • H2 headings
  • URL slug
  • First 100 words of body text
  • Keyword density across the full page
  • Image alt text

Understanding Keyword Density

Density is how often your keyword appears relative to the page's total word count. This tool treats 0.5% to 3% as a healthy range — enough that the keyword shows up naturally, not so much that it reads like it's been stuffed in.

Does Keyword Density Still Matter for SEO?

Not as a direct ranking factor the way it once did. Modern search engines care more about topical relevance and matching what someone's actually searching for than hitting a precise density number. Treat this check as a stuffing sanity check, not a target percentage to chase.

How the Score Is Calculated

Eight checks, each weighted by how much it typically matters for targeting a keyword — title and H1 carry the most weight, image alt text the least. A pass earns its full weight, a warning earns half, a fail earns none, and the score is the total earned as a percentage.

Checking a Single Page vs a Whole Site

This checks one URL against one keyword per run — it doesn't crawl your whole site or check multiple keywords in one pass. Run it again for each page and keyword combination you care about.

Is It Safe to Check a URL Here?

Yes — the page is fetched and checked for that one request and isn't saved anywhere. No account or sign-up is required to use it.

On-Page Keyword Checking for Content Writers

A quick sanity check before publishing, or a way to see why an existing page might not be ranking well for the term you intended it to target.

✍️

Pre-publish check

Confirm a new post actually targets its intended keyword before it goes live.

🔍

Diagnosing underperformance

See if a page that isn't ranking is even using the keyword where it counts.

🛠️

Content updates

Re-check an old page after editing it to retarget a keyword.

Limitations of This Keyword Checker

  • Exact phrase matching only — no synonym or related-term detection
  • One page, one keyword per check — no bulk or multi-keyword mode
  • No JavaScript rendering — checks raw server HTML only
  • Doesn't check search rankings or competitor pages

Benefits of Using This Tool

  • Instant results, no sign-up
  • Covers every major on-page keyword placement in one pass
  • Free, with no watermark

Frequently Asked Questions About On-Page Keyword Checking

Is this keyword checker actually free?

Yes — there's no paywall, no watermark, and no sign-up required.

What counts as a healthy keyword density?

This tool treats 0.5% to 3% as a healthy range — the keyword shows up naturally without looking stuffed. Below that, it may warn the keyword is underused; above it, it may warn about stuffing risk.

Does keyword density still matter for SEO?

Not as a direct ranking factor the way it once did. Google today cares more about topical relevance and matching search intent than hitting an exact density number. Treat density as a stuffing sanity check, not something to optimize toward a precise percentage.

Does it check my whole site?

No, it checks one URL against one keyword per run. Run it again for other pages or other target keywords.

Can I check multiple keywords at once?

No, one keyword or phrase per check. Run it again with a different keyword to check another.

Do you store the URLs or keywords I check?

No. The page is fetched and checked for that one request and isn't saved anywhere.