A tool for securely decoding and inspecting SSL/TLS certificates directly in your web browser.
certsummary lets you decode and inspect SSL/TLS certificates right in your browser—no server interaction required. Simply visit https://certsummary.unitvectorylabs.com/, paste in a PEM-formatted certificate, and see all the key details instantly. Built with vanilla JavaScript and HTML, it leverages the jsrsasign library for reliable certificate parsing and decoding.
- Decode and inspect PEM-formatted SSL/TLS certificates
- Extract and display essential certificate details
- Compute and display SHA-1 and SHA-256 fingerprints
- Provide clickable links to crt.sh for extended analysis