qTLS is a Chrome extension which allows you to examine HTTPS connections on the fly.
qTLS provides the following information:
- Certificate
- Issuer
- SAN List
- Subject Name
- Valid From
- Valid To
- Encryption
- Cipher
- Key Exchange
- Key Exchange Group
- Cryptographic Protocol (e.g. TLS 1.2)
- Transfer
- MIME Type
- Application Protocol (e.g. HTTP/1.1)
- Remote IP Address
- Remote Port (e.g. 443)
- Response Status Code (e.g. 200)
- Response Status Text (e.g. OK)
- URL
qTLS is available via Chrome Web Store here. You can also pack the extension locally when Developer Mode is enabled.