The Ultimate
Developer Toolbox
Beautifully designed, privacy-focused toolset for modern developers.
Free forever. No tracking. Just code.
Why OpenToolBox?
Unlike other tool sites that are riddle with ads and send your data to servers, we prioritize your experience and privacy.
100% Client-Side
Your data never leaves your browser. JSON, images, and code are processed locally.
Blazing Fast
Built on Next.js 15 for near-instant load times and seamless transitions.
Secure & Private
No tracking pixels. No cookies. We respect your privacy and your code.
Featured & New
Hand-picked tools for your daily workflow.
JSON Formatter
Free Online JSON Formatter, Minifier & Validator.
Image Converter
Free Image Converter. Convert JPG, PNG to WebP securely.
Password Generator
Free Strong Password Generator. Create secure passwords instantly.
QR Code Generator
Free QR Code Generator with Logo support. High-quality PNG download.
YouTube Thumbnail
Download high-quality YouTube thumbnails and images.
Sign PDF Online
Upload and sign PDF documents. Add signatures to all pages instantly.