About Toolium
Why this site exists
Most online utilities upload your files to a server you know nothing about just to resize an image, merge a PDF or format JSON. Toolium is built on the opposite rule: every tool runs in your browser, so what you type or drop in never leaves your device. It is free, needs no account, and works offline once loaded.
Who builds it
Toolium is built by Vinod Rajbhar, a software engineer with more than 14 years of experience building web products and developer tooling, under the ByteLeaps banner. I also publish programming tutorials on the Codewithvinod YouTube channel. Find me on GitHub and LinkedIn.
How the tools are made
Each tool is a self-contained plugin with its own explanation, worked behavior notes and FAQ. Calculations and conversions use standard formulas and web platform APIs, and I test them against known inputs before publishing. If you find a wrong result, please tell me.
How the site is funded
Toolium may show ads through Google AdSense to cover hosting. Ads never see your tool inputs. See the Privacy Policy for details.
Questions, bugs or tool ideas? Visit the contact page.