About Kitbench

Kitbench is a collection of small, focused tools that each do one job well.

How the tools work

Every tool on this site runs in your web browser. When you open a file or paste data, it is processed by code running on your own device. Nothing you enter is sent to a server, stored, or shared. You can disconnect from the internet after the page loads and the tools keep working.

Privacy

• No accounts, no sign-up, and no cookies set by this site.
• Files and text you use in a tool never leave your device.
• The site uses Cloudflare Web Analytics, which counts page views without cookies and without identifying individual visitors, so we can see which tools are useful.

Accuracy and limitations

Each tool is covered by automated tests and documents the rules it follows. Tools can still have bugs, and file formats vary between the programs that produce them, so check important results before relying on them. The tools perform mechanical conversions and calculations. They are not financial, legal, tax, or medical advice.

Who builds this

The tools are built and maintained with the help of AI coding assistants, with automated tests and quality checks on every change. Tools are added when there is evidence that people need them, and improved or removed based on how useful they turn out to be.