SSL Certificate Checker

Query crt.sh CT logs for issued certificates. Live TLS handshake inspection isn't possible from the browser alone. Inspect public Certificate Transparency recor

Introduction

SSL Certificate Checker is a free, browser-based utility in our Network Tools collection. Query crt.sh CT logs for issued certificates. Live TLS handshake inspection isn’t possible from the browser alone. SSL Certificate Checker surfaces Certificate Transparency history for a domain via crt.sh. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include ct lookup.

Features

CT lookup
Issuer/dates
JSON result

How to use

1
Enter a hostname.
2
Review CT results.

Example

example.com

Input

example.com

Output

issuer + validity fields

Benefits

Run SSL Check entirely in the browser with no signup or installation.
Keep sensitive sample data private — processing never leaves your device.
CT lookup
Issuer/dates
JSON result
Pair it with WHOIS and DNS Lookup when your workflow needs adjacent utilities.

FAQs

Browsers can’t read remote live certs via JS - CT is the client-side alternative.

CT shows issuance history; verify live status with openssl/server tools.

No.

Yes. SSL Check on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.

No. SSL Check runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.

Query crt.sh CT logs for issued certificates. Live TLS handshake inspection isn’t possible from the browser alone. It fits everyday network tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.

Core capabilities include: CT lookup; Issuer/dates; JSON result.

Developers often pair SSL Check with WHOIS, DNS Lookup, Headers Checker. Open Related tools on this page for quick links.