Certificate Transparency Review 2026
Working together to detect maliciously or mistakenly issued certificates
What is Certificate Transparency?
Certificate Transparency is an open ecosystem and standard for making the issuance of website TLS certificates transparent and verifiable. It relies on independent, append-only Merkle-tree logs that domain owners, browsers, and researchers can monitor to detect mis-issued certificates.
Best for
Enterprise
Use cases
- Detect mis-issued certificates
- Monitor CA behavior
- Audit web PKI
Key features
Append-only Merkle-tree certificate logs
Publicly verifiable and tamper-proof
Log monitoring
CA issuance transparency
Pricing
Model
free
Price range
Open standard / community ecosystem; not a commercial product. Started by Google engineers, run by independent organizations.
Free tier
Yes
Certificate Transparency alternatives
Other Hosting & Infrastructure tools worth comparing.