π₯ Paste HTML Source
Open Graph Tag Tester
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 β HTML source is never uploaded to any server.
Core Features
- OG Tag Parsing: Extract og:title, og:description, og:image and all Open Graph tags
- Twitter Card Parsing: Extract twitter:card, twitter:title and Twitter-specific tags
- SEO Tag Check: Verify title, description, canonical and other critical SEO tags
- Missing Item Warnings: Flag required but missing tags to improve social sharing
- Report Export: Copy or download the complete analysis report
How to Use
1. Open the target webpage in your browser, right-click β 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
Use Cases
Social Sharing Debugging
Page looks wrong when shared on Facebook/LinkedIn? Check if OG tags are complete and correct.
SEO Optimization
Verify that pages include complete SEO meta tags for search engine understanding.
Development Validation
Frontend developers verify OG and Twitter Card tags render correctly after deploying new pages.
Technical Background
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).
FAQ
What are Open Graph tags?
Meta tags in a webpage's head that control how a page appears when shared on social media.
What OG tags are required?
4 required: og:title, og:description, og:image, og:url. Missing any may cause incorrect previews.
OG tags vs Twitter Cards?
OG tags are universal (Facebook/LinkedIn etc.), Twitter Cards are Twitter-specific. Twitter falls back to OG tags.
How to test if OG tags work?
Paste HTML into this tool. Also use Facebook Sharing Debugger or Twitter Card Validator.
What are OG image requirements?
Recommended 1200x630px, minimum 600x315. Max 5MB, JPG/PNG/GIF, HTTPS URL required.
Feedback: dexshuang@google.com