Open Graph & Twitter Card Tester
Test, preview, and generate Open Graph and Twitter Card meta tags for Facebook, Twitter/X, LinkedIn, and Discord with live social card previews.
Meta Tag Inputs
HTML5 / OpenGraphLive Social Previews
Fast, Privacy-First Online Developer Tools | toolsfor.co
Zero installation, instant client-side developer utilities designed for speed, privacy, and utility. Test social cards, format queries, and compute timestamps.
Fast, Privacy-First Online Developer Tools | toolsfor.co
Zero installation, instant client-side developer utilities designed for speed, privacy, and utility. Test social cards, format queries, and compute timestamps.
Fast, Privacy-First Online Developer Tools | toolsfor.co
toolsfor.co<!-- Generated Open Graph & Twitter Card tags -->About this tool
How to use it
- Enter your webpage title, description, canonical URL, and social share image URL, or click a sample preset (SaaS, Blog, Product).
- Monitor the live character counters to ensure titles remain under 60 characters and descriptions under 160 characters for optimal display.
- Select your desired Twitter Card type (Summary Large Image for 1.91:1 banner photos or Summary for square thumbnails).
- Switch between the Twitter/X, Facebook, and LinkedIn preview tabs to see exactly how your link will render on social networks.
- Click "Copy HTML" to grab the complete set of valid Open Graph and Twitter Card tags, or download the snippet as a .html file.
Why it matters
['Maximizes social click-through rates: Rich cards with high-resolution images and clear value propositions achieve significantly higher engagement than plain raw URLs.', 'Prevents truncation and broken images: Catch over-length titles, clipped descriptions, and missing image dimensions before publishing content.', 'Dual protocol support: Simultaneously produces compliant Open Graph tags (used by Facebook, LinkedIn, Discord, and Slack) and Twitter/X Card markup.', 'Zero data leakage: All previews, domain parsing, and code generation run 100% in-browser with zero tracking.']
When to use it
['Publishing new blog posts: Audit social cards before promoting articles across Twitter, LinkedIn, and developer communities.', 'Launching landing pages: Verify marketing headline punchiness and branding graphics across multiple social network viewports.', 'E-commerce product promotion: Test product hero shots and pricing descriptions in social feeds.', 'SEO agency audits: Quick sanity checks during client technical audits to inspect Open Graph protocol completeness.']
Common questions
What is the recommended size for Open Graph images?
The recommended size is 1200 × 630 pixels (an aspect ratio of 1.91:1) with a file size under 5MB. This ensures crisp rendering on retina screens and across Facebook, Twitter/X, LinkedIn, and Discord.
What is the difference between summary and summary_large_image on Twitter?
The 'summary' card displays a small square thumbnail to the left of the title and description. The 'summary_large_image' card features a full-width panoramic image banner prominently above the text.
Why is my social preview not updating on Facebook or Twitter after changing tags?
Social networks aggressively cache Open Graph metadata. You may need to use Facebook's Sharing Debugger or Twitter's Card Validator to force their servers to clear the cache and refetch your updated URL.
Does this tool transmit my links or images to any server?
No. All text parsing, card layout mockups, and meta tag generation occur entirely inside your web browser.