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SSL Certificate Checker

SSL Checker

Parse PEM/OpenSSL output for issuer, SANs, and expiry warnings.

Output

Run the tool to see output.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Programmatic Access

SSL Certificate Checker is also callable as a free HTTP JSON API at https://aidevhub.io/api/ssl-checker/ — GET with query parameters or POST with a JSON body, no authentication, CORS enabled, 50 requests/day per IP. Responses return { ok, tool, result, meta }. 

curl -s -X POST https://aidevhub.io/api/ssl-checker/ \
  -H "Content-Type: application/json" \
  -d '{"certificate":"subject=CN = example.com\nissuer=CN = R3\nNot Before: Jan  1 00:00:00 2026 GMT\nNot After : Jan  1 00:00:00 2027 GMT\nX509v3 Subject Alternative Name: DNS:example.com, DNS:www.example.com"}'

Machine-readable contract: /api/tool/ssl-checker.json All API endpoints: /agents/ LLM site index: /llms.txt

Agent Invocation

Best Path For Builders

Dedicated API endpoint

Deterministic outputs, machine-safe contracts, and production-ready examples.

Dedicated API

https://aidevhub.io/api/ssl-checker/

OpenAPI: https://aidevhub.io/api/openapi.yaml

GET /api/ssl-checker/ GET ssl-checker
POST /api/ssl-checker/ POST ssl-checker

Unified Runtime API

https://aidevhub.io/api/tools/run/?toolId=ssl-checker&a=...

GET and POST are supported at /api/tools/run/ with identical validation and limits.

Limit: 10 req / 60s, input max 512 KB.

How to Use SSL Certificate Checker

  1. 1

    Prepare your input

    Collect the source text or structured payload you want to process and paste it into the tool input fields.

  2. 2

    Select mode and run

    Choose the relevant mode (if available) and click Run to execute the deterministic transformation.

  3. 3

    Review warnings and output

    Check warnings, validation notes, and generated output before using the result in production workflows.

  4. 4

    Copy and integrate

    Copy the generated output and apply it in your project, API flow, or documentation pipeline.

Frequently Asked Questions

What is SSL Certificate Checker?
SSL Certificate Checker is a free browser-based utility on AI Dev Hub. Parse certificate text and check issuer, SANs, and expiry risk.