About Oltool

Dennis · Full-Stack Developer

Focused on developer tools and productivity. Passionate about open source and privacy-preserving technology.

About This Site

Oltool (oltool.net) is a free online toolbox for developers and IT professionals. Since launching in June 2025, it has grown to 148 everyday utilities.

Categories include: cryptography, Base64 encoding, JSON/YAML conversion, regex testing, QR code generation, IPv4 subnet calculation, JWT parsing, timestamp conversion, text processing, math calculations, network diagnostics, and more.

Our Principles

Privacy-First: All tools run entirely in your browser — no data is ever uploaded to any server.
Free & Open: All tools are free forever. No registration, no installation required.
Developer-Friendly: Every tool is carefully designed for a clean, efficient experience.
Always Improving: We regularly add new tools and optimize existing ones.

Tech Stack

Built with modern web technologies:

Framework: Vue 3 + Nuxt 4 (SSR static generation)
Styling: CSS variables + responsive design, dark/light mode
i18n: Built-in bilingual support (Chinese/English)
Hosting: EdgeOne CDN global acceleration
License: GPL-3.0

Contact

Feel free to reach out with questions, suggestions, or collaboration inquiries:

Email: contact@oltool.net
GitHub: github.com/oltool
Contact page: /contact