Passphrase generator
Generate a random multiword passphrase using a bundled word list.
A little less busywork
Security & privacy
Useful tools, right when you need them. All free. All in your browser.
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File checksum verifier
Hash a local file and compare it with an expected SHA-256 digest.
Content Security Policy builder
Compose a CSP header from explicit resource-source choices.
PEM certificate viewer
Inspect a public X.509 certificate’s names, dates, key details and fingerprint.
URL structure inspector
Inspect URL components, hostname encoding and visible structural warning signs.
CIDR / subnet calculator
Calculate IPv4 network ranges and host counts.
HMAC generator / verifier
Authenticate sample messages with a shared key.
HAR network-log viewer
Inspect timings and export a sanitized HAR copy.