Precision-engineered keyword density checker for the modern web.
About Keyword density checker
Keyword density checker is a practical, browser-native SEO inspector built for marketers and developers who need to audit a page's on-page signals without waiting for a crawler or paying for an enterprise suite. It extracts and validates the meta information that actually moves rankings — titles, descriptions, Open Graph data, canonical tags, structured data, heading hierarchy and more — all locally. The result is a clear, exportable report that tells you exactly what Google will see and what needs to be fixed, delivered in under a second and with no data ever leaving your machine.
Problems This Tool Solves
Missing or truncated title tags and meta descriptions silently cost click-through rate in search results. - Keyword density checker measures each tag against Google's current display thresholds and warns you before something gets cut off in the SERP.
Open Graph and Twitter Card tags are easy to miss, and bad previews cost social shares. - Keyword density checker validates every OG/Twitter tag and shows a live preview of how the page will render on Facebook, LinkedIn, X and iMessage.
Schema and structured-data mistakes block rich-result eligibility without any warning from Google. - Keyword density checker extracts embedded JSON-LD, validates it against the current schema.org spec, and flags the exact field causing the problem.
Heading hierarchy issues (missing H1, skipped H2→H4) quietly hurt topic clarity. - Keyword density checker maps the complete heading tree and flags skipped levels, empty headings and duplicate H1s.
How to Use
Paste the URL or HTML - Drop in a live URL or paste raw HTML for pre-publish checks.
Run the audit - The on-device parser reads every meta, canonical, OG, Twitter and heading tag in one pass.
Review flagged issues - Problems are grouped by severity with a human-readable explanation and a suggested fix.
Copy or export - Copy fixed tags straight into your CMS, or export the full audit as CSV/JSON.
Why This Tool Is Better
Sees what Googlebot sees - Parses rendered HTML using the same standards-compliant DOM parser a crawler would — no inference, no approximation.
Up-to-date thresholds - Character limits, schema rules and tag validation follow the current 2026 Google and schema.org specs.
Private by design - Your URLs and HTML stay on-device — critical for auditing staging environments, gated pages and sensitive client sites.
Category: Web / SEO Tools
This tool runs entirely in your browser. No data is sent to any server. Try the Keyword density checker now - it is free.