About ToolNest
ToolNest is a collection of 30+ free online tools built for developers, designers, writers, and everyone who needs quick utilities without sign-ups, downloads, or privacy concerns.
Every tool runs 100% in your browser. Your data never leaves your device — we literally cannot see what you type, paste, or generate.
How It Works
All processing happens client-side using modern browser APIs like the Web Crypto API, Canvas API, FileReader API, and standard JavaScript. There are no server-side computations, no databases, and no user accounts. The site is a static Next.js application hosted on Vercel.
Our Categories
- Developer Tools — JSON formatter, regex tester, JWT decoder, SQL formatter, and more essential dev utilities.
- Text Tools — Word counter, case converter, markdown editor, and text processing tools.
- Design Tools — Color converter, gradient builder, shadow generator, QR codes, and visual tools.
- Security Tools — Password generator, hash computation, and cryptographic utilities.
- Converter Tools — Base64, URL encoding, number bases, JSON to CSV, and format converters.
Why We Built This
We were tired of online tools that require sign-ups, display aggressive ads, or silently send your data to servers. ToolNest is the alternative: fast, clean, private, and free.
Open Source
ToolNest is open source. You can view the source code, suggest improvements, or report issues on GitHub. Contributions are welcome.