Plain-language explainers for passkeys, CSP, OTS and more.
Full tool — runs in your browser. No sign-up required.
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Plain-language explainers for passkeys, CSP, OTS and more.
Developer utilities should be fast, copy-friendly, and predictable. Paste or drop input, get a reliable result — no CLI install required.
Use this free Explain Mode whenever you need a browser-local result without creating an account.
Open the Explain Mode page — no registration required.
Paste, upload, or configure your input.
Review the live result and adjust options.
Copy or download the output to your device.
Processing is designed to stay in your browser session unless a mode explicitly notes a network call.
LocaleCet outil traite les données localement dans votre navigateur. Tentaco ne reçoit pas le contenu de vos fichiers pour ce mode.
Plain-language explainers for passkeys, CSP, OTS and more. Oui — runs locally in your browser.
Oui — free on Tentaco.
Non — le traitement s'effectue localement dans votre navigateur. Vos fichiers et saisies ne quittent pas votre appareil, sauf si l'outil utilise explicitement le réseau.
Security Recipes online — free
Local checklists for passkeys, sealed notes and proofs.
Passkey Inspector online — free
Decode WebAuthn clientDataJSON and authenticatorData locally.
Policy Tester online — free
Analyze CSP, HSTS, CORS and Permissions-Policy headers.
Security Recipe Builder online — free
Compose local security recipe pipelines from building blocks.
WebAuthn Test online — free
Register and assert a passkey in this browser (demo).
Certificate Inspector online — free
Inspect PEM X.509 certificates and fingerprints.
File Timestamps online — free
Hash files and stamp them via OpenTimestamps calendars.
Secret Sharing online — free
Split and restore secrets with Shamir threshold shares.