17 Free Tools

Professional Tools.Ridiculously Fast.

The most powerful suite of online tools for developers, designers, and creators. All running locally in your browser. No uploads. No waiting.

A Kaiross Labs initiative

Built For Developers

Built from the ground up for speed, privacy, and simplicity.

All processing happens locally in your browser. Your data never leaves your device.

Optimized algorithms deliver instant results without server round trips.

Built with modern web technologies. Open source and extensible.

No subscriptions, no limits, no sign-ups. Use all tools completely free.

Each tool is crafted with attention to detail and performance.

Generate passwords, QR codes, and barcodes

Merge, compress, and split PDF files

Format JSON, XML, and compare code

Compress and resize images efficiently

Start using professional tools that run entirely in your browser. All tools are free, private, and work offline.