About
About TetraBrain Desk
TetraBrain Desk is a collection of free browser tools designed to make everyday tasks easier — from data formatting to image processing. The site is supported by advertising, which helps keep all tools free for everyone.
Our mission
Make common developer, data, media, security, text, and calculation tasks available without an account or an application processing server. Each tool states its actual input, output, limitations, and connected workflow.
Privacy by architecture
Ordinary tool inputs are processed by browser APIs and local JavaScript. File, camera, clipboard, and download access starts only after an explicit action. Tool input is not placed in URLs, analytics, or application logs.
Static and offline-capable
Public pages are prerendered as static HTML. Compatible tools continue to run after their assets have been cached; each tool documents browser features that may still require HTTPS, permission, memory, or a network connection.
Accuracy and limits
A tool describes what its implementation verifies and what it does not. Results that affect security, law, finance, medicine, production data, or interoperability must still be checked against the relevant authoritative specification or professional process.