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SEO Tools & Calculators

Professional tools for data-driven SEO optimization

SEO ROI Calculator

Formula: ROI = ((Additional Revenue - Investment) / Investment) × 100

Keyword Density Analyzer

Optimal Range: 1-2% for primary keywords, 0.5-1% for secondary keywords

Local Business Schema Generator

Page Speed Impact Calculator

Research: Every 1-second delay in page load time can result in 7% loss in conversions (Akamai)
'; document.getElementById('schema-result').style.display = 'block'; } function copySchema() { const schema = document.getElementById('schema-output').textContent; navigator.clipboard.writeText(schema).then(() => { alert('Schema copied to clipboard!'); }); } // Page Speed Impact Calculator function calculateSpeedImpact() { const currentSpeed = parseFloat(document.getElementById('current-speed').value) || 0; const targetSpeed = parseFloat(document.getElementById('target-speed').value) || 0; const visitors = parseFloat(document.getElementById('monthly-visitors').value) || 0; const currentBounce = parseFloat(document.getElementById('current-bounce').value) || 0; const improvement = currentSpeed - targetSpeed; const bounceReduction = improvement * 7; // 7% per second const newBounce = Math.max(currentBounce - bounceReduction, 20); const additionalEngaged = visitors * (bounceReduction / 100); const conversionUplift = improvement * 7; // 7% conversion increase per second document.getElementById('speed-improvement').textContent = improvement.toFixed(1) + ' seconds faster'; document.getElementById('new-bounce').textContent = newBounce.toFixed(1) + '%'; document.getElementById('engaged-users').textContent = '+' + Math.round(additionalEngaged).toLocaleString() + '/month'; document.getElementById('conversion-uplift').textContent = '+' + conversionUplift.toFixed(1) + '%'; document.getElementById('speed-result').style.display = 'block'; }