Quick Start
Help
Learn how to search UsefulShelf, use tools, process data, and perform common operations.
How to find the tool you need
Search from the homepage or tool library by keyword, e.g., JSON, QR code, color, Base64, timestamp. Direct matches go to the tool page; partial matches show filtered results.
Tool requires login
Currently launched tools don't require login. JSON formatter, QR code generator, color picker, Base64 converter, timestamp converter, regex tester, and unit converter can all be used directly in the browser.
Is data uploaded
Initial tools focus on browser-local processing. JSON content, QR code text, color values, Base64 text, timestamps, and regex test text are not actively sent to the server.