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Advanced SEO
Word Counter

Comprehensive text analysis with readability scoring, keyword density tracking, passive voice detection, and actionable SEO insights — all in your browser.

Real-Time Analysis Readability Score Keyword Density SEO Insights
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Everything You Need for
SEO Content Analysis

Professional-grade text analysis tools that help you create search-engine optimized content that ranks.

Real-Time Analysis

Get instant word count, character count, and text statistics as you type. No need to click analyze — results update live.

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Readability Scoring

Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index help ensure your content matches your audience.

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Keyword Density

Track your focus keyword usage with density percentage, occurrence count, and position. Avoid over-optimization warnings.

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Passive Voice Detection

Identify passive voice constructions in your text and get suggestions for more engaging active voice alternatives.

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Long Sentence Alerts

Flag sentences over 25 words as yellow warnings and over 35 words as red to improve readability and user engagement.

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Heading Analyzer

Parse your text for heading-like lines and verify proper H1-H3 hierarchy. Get warnings for missing or misused headings.

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Top Keywords

Extract the 25 most-used keywords with counts, density percentages, and visual bars. Filter out stop words for cleaner results.

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Content Score

Get an overall SEO writing grade (0-100) combining content length, readability, keyword density, sentence structure, and headings.

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Export Reports

Copy results to clipboard or download as .txt files. Export both raw content and full analysis reports for your records.

Frequently Asked Questions

Answers to common questions about word counting, readability, and SEO content optimization.

For SEO, longer content typically performs better. Blog posts should aim for 1,500–2,500 words for competitive topics, while pillar pages and guides can be 3,000+ words. However, quality matters more than quantity — ensure every word adds value. Our tool helps you track your content length and suggests improvements based on your target.
Reading time is calculated based on the average adult reading speed of 238 words per minute (according to research from Brysbaert, 2019). Speaking time uses an average of 150 words per minute. These are estimates — actual reading and speaking speeds vary based on content complexity, reader familiarity, and individual pace.
The Flesch Reading Ease score measures text readability on a scale of 0-100. Higher scores indicate easier-to-read content. Scores 90-100 are very easy (5th grade level), 60-70 is standard (8th-9th grade), and below 30 is very difficult (graduate level). For web content, aim for 60-80. The formula is: 206.835 - 1.015 × (words/sentences) - 84.6 × (syllables/words).
Keyword density is the percentage of times your focus keyword appears relative to total word count. The optimal range is 0.5% to 2.5%. Below 0.5% may not signal relevance to search engines, while above 2.5% risks keyword stuffing penalties. Above 3% triggers a strong warning. Our tool tracks density in real-time and provides visual feedback.
Passive voice doesn't directly affect SEO rankings, but it impacts readability and user engagement. Passive sentences are typically harder to read and less engaging. Studies show content with active voice has lower bounce rates and higher time-on-page. Aim to keep passive voice under 10% of sentences. Our tool detects passive constructions and counts instances.
For general web content, aim for a Flesch Reading Ease score of 60-80 (standard to fairly easy). Blog posts targeting broad audiences should target 70-80. Technical or academic content may naturally score lower (40-60). The key is knowing your audience. Our readability analysis includes grade-level equivalents so you can match your content to your readers' level.
To boost your content score: (1) Write at least 1,500 words for thorough topic coverage. (2) Aim for a Flesch score of 60-80 by using shorter sentences and simpler words. (3) Maintain focus keyword density between 0.5%-2.5%. (4) Keep sentences under 25 words when possible. (5) Use proper heading hierarchy with one H1, followed by H2s and H3s. Our Insights panel provides personalized recommendations based on your specific content.