Blog Quality Checker: Free SEO Tool | Human-Friendly 📝 Blog Quality Checker — Simple & Human Refined paragraph detection • Multi-word keywords • Advanced readability • Smarter internal links • Accessible & memory safe 🔎 Check your blog post quality 📌 Page title Keep between 30-60 characters for best SEO. 🎯 Focus keyword (single word or full phrase like "best homemade pizza recipe") We count exact phrase matches with word boundaries. Multi-word supported. 📄 Your article (HTML or plain text) 🔒 Your content stays in your browser. Safe DOM methods, no innerHTML, memory managed. 🚀 Run quality check → ✨ Click "Run quality check" — refined paragraph counter, smart internal link logic, and advanced readability score (Flesch-Kincaid style). ...

YouTube Thumbnail Checker – Fixed Contrast | Light & Private Skip to thumbnail checker 📸 YouTube Thumbnail Checker Lightweight, private tool with fixed histogram percentile contrast (5th–95th) , improved HSV warmth, and mobile‑optimized Sobel edge detection. Your image never leaves your browser. 📂 Drag & drop your thumbnail here Choose image JPG, PNG, WEBP up to 10MB – local only 🔥 Hide heatmap 📌 Upload a thumbnail to see score ⟳ Reset 📖 What these numbers mean (no jargon) Fixed histogram contrast – We correctly find the 5th darkest and 95th brightest pixels (ignoring outliers) and compare them. 4.5:1+ is strong. HSV warmth – Uses true Hue/Saturation/Value. Warm colors (red/orange/yellow) with decent saturation are counted. More accurate than simple RGB. Sob...