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SEO Keyword Density Checker

<button onclick="var kw = document.getElementById('keywordInput').value.toLowerCase().trim(); var text = document.getElementById('textContent').value.toLowerCase(); var resultDiv = document.getElementById('analysisResult'); if(!kw || !text) { resultDiv.innerHTML = 'Please fill both fields.'; return; } var words = text.split(/\s+/).filter(function(w){return w.length > 0}); var count = 0; var pos = text.indexOf(kw); while(pos !== -1) { count++; pos = text.indexOf(kw, pos + 1); } var density = ((count / words.length) * 100).toFixed(2); var color = (density > 0.5 && density < 2.5) ? '#38a169' : '#e53e3e'; resultDiv.innerHTML = '
Result: ' + count + ' occurrences
Density: ' + density + '%
Recommended: 0.5% – 2.5%
';" style="background: #3182ce; color: white; border: none; padding: 10px 20px; border-radius: 4px; cursor: pointer; font-weight: 600; width: 100%;">Analyze Content
Why is keyword density important for SEO? ▾
Keyword density helps search engines understand the relevance of your content to specific search queries. However, over-optimization (keyword stuffing) can lead to penalties.
What is the ideal keyword density? ▾
Most SEO experts recommend a density between 0.5% and 2.5%. Focus on natural writing and user intent rather than strictly hitting a specific percentage.
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