About onekind lab

onekind lab is an independent studio in Korea. It makes small web tools for problems that come up every day — tracking hours, formatting code, fixing a PDF — and keeps each one simple enough to use in seconds.

How the tools are built

• Calculations run in your browser. Text and files you enter stay on your device unless a page clearly says otherwise.
• Every tool page explains how its result is calculated, so you can check it.
• Pages are reviewed and updated regularly; the date at the bottom shows the last review.

Sites

WheelAndTools · devbench · PDF 도구함 · 문서 편집기 · 명리공방