Security
Inspect certificates and build browser security policies. Nothing you paste is uploaded.
- TLS Certificate DecoderDecode a PEM certificate to see its subject, issuer, validity, SANs and fingerprints, with expiry and algorithm warnings.
- UUID & Token GeneratorGenerate v4 and sortable v7 UUIDs or random tokens from a CSPRNG, and inspect an existing UUID.
- PEM Inspector & FormatterIdentify the blocks in a PEM file, fix its wrapping and line endings, and spot the mechanical faults parsers reject.
- Content Security Policy BuilderBuild a Content-Security-Policy header and have it reviewed for the weaknesses that make a CSP ineffective.
Runs locally
TLS Certificate Decoder
Decode a PEM certificate to see its subject, issuer, validity, SANs and fingerprints, with expiry and algorithm warnings.
Runs locally
UUID & Token Generator
Generate v4 and sortable v7 UUIDs or random tokens from a CSPRNG, and inspect an existing UUID.
Runs locally
PEM Inspector & Formatter
Identify the blocks in a PEM file, fix its wrapping and line endings, and spot the mechanical faults parsers reject.
Runs locally
Content Security Policy Builder
Build a Content-Security-Policy header and have it reviewed for the weaknesses that make a CSP ineffective.