Security Tools Tools
JWT, hashes, crypto.
13 free security tools tools — no sign-up, runs in your browser.
Reviewed by The Markvibe Team · Last updated 2026-06-28
The complete guide to security tools
This page is the hub for everything security tools on Markvibe. JWT, hashes, crypto. Every tool below runs in your browser — your files and text never leave your device. Use the cluster as a workflow: pick the tool that matches the job, then jump to a related one when the next step calls for it.
All Security Tools Tools
Decode JSON Web Tokens to inspect header and payload.
Estimate bcrypt time per hash by cost factor.
Generate Apache .htpasswd lines.
Detect weak or sequential PIN codes.
Detect non-ASCII characters and emoji.
Encrypt or decrypt text with a repeating XOR key.
Generate an HMAC signature with SHA-256.
Generate an HMAC signature with SHA-1.
Build otpauth:// URIs for authenticator apps.
Generate a fresh Base32 TOTP secret.
Generate a cryptographically random 256-bit secret.
Generate prefixed random API keys.
Generate random hex keys of any byte length.
Explore related categories
Keep going — these categories pair well with security tools workflows.