Free Online Certificate Chain Viewer
Inspect Every Certificate in an SSL Chain
Need to use Certificate Chain Viewer right now?
A real-world SSL certificate rarely stands alone — it's typically bundled with one or more intermediate certificates linking it back to a trusted root, and diagnosing a "chain incomplete" or trust error often requires looking at every certificate in that chain individually, not just the leaf certificate a server presents.
Paste a full chain (server certificate followed by any intermediates) to see each link parsed individually, in order.
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Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Certificate Chain Viewer
A real-world SSL certificate rarely stands alone — it's typically bundled with one or more intermediate certificates linking it back to a trusted root, and diagnosing a "chain incomplete" or trust error often requires looking at every certificate in that chain individually, not just the leaf certificate a server presents.
This tool takes a full certificate chain — multiple PEM-encoded certificates pasted one after another, the way a server's full chain bundle is typically formatted — and parses each one individually, showing its subject, issuer, validity dates, and serial number, clearly labeled as the leaf, intermediate, or root certificate based on its position.
This is especially useful for confirming a chain is actually complete and in the correct order — the leaf certificate's issuer should match the next certificate's subject, all the way up the chain, and a broken link in that sequence is often exactly what causes browsers or clients to report a trust error.
How it works
- Paste the full certificate chain. Paste the server certificate followed by any intermediate certificates.
- Review each certificate. See subject, issuer, and validity dates for every link in the chain.
- Check the chain order. Confirm each certificate's issuer matches the next one's subject.
Examples
Two-certificate chain
Input
A leaf certificate followed by its intermediate CA certificate
Output
Two entries shown: "Leaf certificate" and "Intermediate 1," each with subject and issuer detail.