Security ToolsSecurity Tools
Simple security tools for passwords, hashes, tokens, and encoding.
Fast browser-based utilities for developers, admins, and anyone who needs reliable security helpers without sending sensitive input to a server.
Available tools
Generate passwords, check strength, create hashes, decode tokens, and convert text without unnecessary setup.
Password Generator
Generate strong random passwords locally in your browser.
Passphrase Generator
Create memorable multi-word passphrases from a local word list.
Password Strength Checker
Estimate password strength without sending it to a server.
Password Entropy Calculator
Calculate entropy bits and practical brute-force difficulty.
Hash Generator
Generate SHA-256, SHA-384, and SHA-512 hashes.
UUID Generator
Generate secure random UUIDs with browser crypto APIs.
Base64 Encoder / Decoder
Encode and decode Base64 text locally.
JWT Decoder
Decode JWT headers and payloads without verification.
Free
Use every tool.
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Batch generation is capped for practical use.
Pro at $3/month
No ads.
Higher batch limits for supported tools.
Subscription management through Stripe Billing Portal.
FAQ
Are passwords stored?
No. Password generation and strength checks run locally.
Does the JWT decoder verify signatures?
No. It decodes header and payload only.
Can I use the tools for free?
Yes. The free version includes all tools with ads.
Security utilities for everyday work
Security Tools provides focused utilities for password creation, passphrase generation, entropy estimation, hashing, UUID generation, Base64 conversion, and JWT inspection. The tools are intentionally simple, fast-loading, and built for repeat use.