Are You Accidentally Keyword Stuffing?
In a 1,000-word article about hiking boots, using “boots” 20 times gives you a 2% density, totally fine. Using it 40 times pushes you to 4%, which starts looking unnatural to Google’s spam filters. The problem is that you don’t feel yourself doing it while you’re writing.
Paste your text and see every keyword’s frequency and density percentage, color-coded: green for 1-3% (optimal), yellow for borderline, red for over 3% (likely stuffing). Stop words like “the,” “and,” and “is” are automatically filtered out since they carry zero SEO signal.
The 1-3% Sweet Spot
This isn’t a hard rule, Google’s algorithm is way more sophisticated than counting keyword percentages. But density remains a useful diagnostic tool. If your primary keyword is under 0.5%, you might not be signaling relevance strongly enough. If it’s over 3%, you risk looking spammy. The color-coded table makes it obvious where you stand.
Modern SEO cares more about topical depth than keyword repetition. Instead of using “hiking boots” thirty times, use it naturally and supplement with related terms: trail shoes, waterproof boots, ankle support, Vibram soles, Gore-Tex lining. Google understands synonyms and related concepts, so your content doesn’t need to read like a broken record.
Real Editing Scenarios
Pre-publish check. You’ve written 2,000 words about content marketing strategy. Paste it in and discover you used “strategy” 45 times. That’s 2.25%, fine technically, but maybe swap some for “approach,” “plan,” or “method” to sound more natural.
Competitor analysis. Paste a competitor’s top-ranking blog post. See which keywords they emphasize and at what density. It won’t tell you their whole SEO strategy, but it reveals what they consider their primary terms.
Content audit. Run your existing pages through this and look for red flags. Sometimes older content was written during the keyword-stuffing era and hasn’t been updated. Pages with 5-6% density on a single term are candidates for rewriting.
Use this alongside the Reading Level Analyzer for readability scores and the Title Length Checker for metadata optimization.
Current Limitations
The tool analyzes single-word frequency. If your target keyword is a multi-word phrase like “best hiking boots for wide feet,” you’d need to check for that phrase manually. Single-word analysis still catches the most common over-optimization issues though.
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