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How Social Media Sharing Actually Works ?

DEV Community·Shishir Bhuiyan·about 1 month ago
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When you paste a URL on Facebook, Twitter, or LinkedIn, here's what happens behind the scenes: 1️⃣ The Crawl - Platform sends a bot to your URL 2️⃣ HTML Parsing - Scans your page for meta tags 3️⃣ Content Extraction - Pulls title, description, image 4️⃣ Preview Generation - Creates the rich preview card 5️⃣ Caching - Stores the data for future shares 🖼️ Image Requirements (Critical!): • Size: Minimum 1200x630px (Facebook), 1024x512px (Twitter) • Format: JPG, PNG, WebP • File Size: Under 8MB • Accessibility: Must be publicly accessible via HTTPS • Alt Text: Include og:image:alt for accessibility 📝 Content Best Practices: • Title: 60-90 characters (gets truncated after) • Description: 150-160 characters for optimal display • Image: High contrast, readable text, brand consistent • URL: Clean, descriptive URLs perform better ⚡ Pro Developer Tips: Test Before Launch: • Meta Tags Toolkit: https://metatags.io/ • Facebook Debugger: developers.facebook.com/tools/debug/ • Twitter Card Validator:…

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