Utility Tools
Utility tools are the everyday helpers that do not fit neatly into a single category but earn a place in every developer's and designer's bookmarks. Generate a QR code for a poster, create a strong password for a new account, produce a UUID for a database row, or convert a color between HEX, RGB, HSL, and HSV for your stylesheet. Like every tool on DevToolsBox, these run entirely in your browser: passwords and UUIDs are generated with the Web Crypto API for true cryptographic randomness, and color values are converted locally without any network calls. They are small, fast, and privacy-friendly — exactly what a utility should be.
Utility Tools (3)
QR Code Generator
Generate QR codes from URLs, text, or any data. Customizable size and color. Free, no sign-up needed.
Password Generator
Generate strong, secure passwords with customizable length, symbols, numbers, and case options.
Color Converter
Convert colors between HEX, RGB, HSL, and HSV formats. Pick colors visually with the color picker.
Utility Tools — Frequently Asked Questions
Are the generated passwords and UUIDs truly random?
Yes. Both use the browser's Web Crypto API (crypto.getRandomValues and crypto.randomUUID), which provides cryptographically secure randomness suitable for security-sensitive use. They are not based on Math.random().
Do generated QR codes expire?
No. The QR code encodes your data directly into the image and does not reference any server or short-link service, so it will scan forever as long as the content it points to (such as a URL) still exists.
Can I convert colors with alpha transparency?
The converter covers opaque HEX, RGB, HSL, and HSV. For transparency, CSS supports #RRGGBBAA and rgba()/hsla() with a separate alpha value layered on top of the converted RGB color.
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