Content Optimizer
Paste your content and get a full SEO audit — keyword density, Flesch-Kincaid readability, heading structure, word count, and an actionable SEO checklist.
Understanding the SEO Metrics
- Keyword Density
- The percentage of words that are your target keyword. The sweet spot is 1–3%. Below 1% and you may not rank; above 3% risks keyword stuffing penalties.
- Flesch-Kincaid Readability
- Scores from 0–100. 60+ is easy to read (plain English). 70–80 is ideal for most web content. Lower scores indicate complex, academic writing.
- Reading Time
- Estimated at 238 words per minute (average adult reading speed). Longer content (1500+ words) tends to rank better for competitive keywords.
FAQ
What is a good content SEO score?
Our score is a composite of keyword density (25 pts), readability (25 pts), word count (25 pts), and checklist pass rate (25 pts). A score above 70 is solid; above 85 is excellent. The score should guide improvement, not be gamed.
How do I add headings for the heading structure checker?
Use markdown-style headings: # for H1, ## for H2, ### for H3. The tool parses these from your content to build the heading structure outline.
Why does keyword density matter?
Keyword density helps search engines understand what your page is about. Too low and you may not rank; too high and Google may see it as keyword stuffing. The 1–3% range is a widely accepted target for natural-sounding content.
What's the minimum word count for SEO?
At least 300 words to be indexed meaningfully. For competitive keywords, 800–2000+ words typically perform better. Longer content provides more value and earns more backlinks.
Is this tool sending my content anywhere?
No. All analysis runs entirely in your browser with JavaScript. Your content never leaves your device.