Utility Tools
Small utilities that save time: QR codes, strong passwords and a strength checker, WhatsApp links, plus web and developer tools for SHA-256 hashes, slugs, UUIDs, JSON, Base64, URL encoding, colour codes and Unix timestamps. Everything runs on your device.
Browser Cryptography
Passwords and hashes use window.crypto without network requests
Nothing Uploaded
Base64, JSON, URLs and UUIDs are handled on your device
Developer Ready
Formatted payloads, valid slugs, and Unix timestamp conversions
Passwords Not Kept
Generated passwords exist only on the open page and are cleared when you leave it
Links and QR codes
4 toolsPasswords and security
3 toolsDeveloper
5 toolsDecision Guidance
Which utility tool should I use?
Task to Tool Directory (13 jobs)
Scroll horizontally on mobile| What you need to do | Recommended Tool |
|---|---|
| Let people open a website by scanning a code | QR Code Generator |
| Print a scannable code on a flyer or poster | QR Code Generator |
| Create a new password for an account | Password Generator |
| Check how easily a password could be guessed | Password Strength Checker |
| Make a SHA-256 hash of some text | Hash Generator |
| Let customers message you on WhatsApp in one tap | WhatsApp Link Generator |
| Read, tidy or fix JSON from an API or config file | JSON Formatter |
| Decode a Base64 value from an API or token | Base64 Encoder / Decoder |
| Put a search term or value safely into a link | URL Encoder / Decoder |
| Turn a HEX colour into RGB or HSL for CSS | Color Converter |
| Turn a Unix timestamp into a readable date | Unix Timestamp Converter |
| Make a clean URL from a page title | Slug Generator |
| Generate unique IDs for data or code | UUID Generator |
Frequently Asked Questions
What is the difference between the Password Generator and the Strength Checker?
The generator makes a random password and rates it by how many possibilities it was picked from. The checker rates a password you already have by looking for the common passwords, words, keyboard patterns and dates that guessers try first. A long random password from the generator should rate well in the checker too; a made-up one often doesn’t.
Do I need WhatsApp Business for a click-to-chat link?
No. wa.me links work with any WhatsApp number, personal or business.
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