Free online Open Graph tag tester. Paste HTML source code to automatically parse all OG tags, Twitter Card tags, and SEO meta tags with missing-item warnings. Pure frontend processing — HTML source is never uploaded to any server.
1. Open the target webpage in your browser, right-click → View Page Source
2. Copy the HTML code from the <head> section
3. Paste into the input field and click "Analyze Tags"
4. Review results and fix missing or incorrect tags
Page looks wrong when shared on Facebook/LinkedIn? Check if OG tags are complete and correct.
Verify that pages include complete SEO meta tags for search engine understanding.
Frontend developers verify OG and Twitter Card tags render correctly after deploying new pages.
The Open Graph protocol was created by Facebook in 2010 and is now the de facto standard for social sharing. LinkedIn, Pinterest, Discord, and others use OG tags for link previews. Twitter Cards extend OG for Twitter-specific display, but Twitter falls back to OG tags. Complete OG tags significantly improve social sharing click-through rates (CTR).
Meta tags in a webpage's head that control how a page appears when shared on social media.
4 required: og:title, og:description, og:image, og:url. Missing any may cause incorrect previews.
OG tags are universal (Facebook/LinkedIn etc.), Twitter Cards are Twitter-specific. Twitter falls back to OG tags.
Paste HTML into this tool. Also use Facebook Sharing Debugger or Twitter Card Validator.
Recommended 1200x630px, minimum 600x315. Max 5MB, JPG/PNG/GIF, HTTPS URL required.