About Praticulus
Fast, free, privacy-first tools for developers and everyone.
Why Praticulus?
We got tired of bloated tools with popups, mandatory signups, and trackers everywhere. Praticulus is different:
- 100% client-side: Your data never leaves your browser. Verifiable in DevTools → Network
- No signup: Every tool works immediately, no account needed
- No tracking: No cookies, no analytics pixels, no fingerprinting
- Fast: Lightweight pages with no heavy frameworks, holding a Lighthouse 100 budget on every tool
- Free: All tools are free to use, forever
Read the full privacy policy for the technical details and how to verify the claims yourself.
Available Tools
Developer Tools
- JSON Formatter & Validator
- Base64 Encoder / Decoder
- URL Encoder / Decoder
- Hash Generator (MD5, SHA-256, SHA-512)
- HMAC Generator
- UUID Generator
- Regex Tester
- Diff Checker
- SQL Formatter
- YAML Formatter & Validator
- Markdown Preview
Security Tools
- Password Generator
- Hash Generator (MD5, SHA-256, SHA-512)
- HMAC Generator
- JWT Decoder
- TOTP Generator
- Certificate Decoder
Color Tools
- Color Picker
- Color Converter (HEX, RGB, HSL, CMYK)
- Palette Generator
- Contrast Checker (WCAG 2.1)
- CSS Gradient Generator
- Color Blender
Converter Tools
Generator Tools
Text Tools
31 tools available and growing. Have a suggestion? We'd love to hear it.
Open Source
Praticulus is open source under the MIT license. The full code behind every tool is public, so you can audit it, fork it, or contribute a new one.
Browse the repository at github.com/jamalofski/praticulus, or read the contribution guide to propose a tool.
Contact
Got feedback or a tool request? Reach out at contact@praticulus.com