About

KJPO is a growing collection of fast, free online tools — calculators, converters, and everyday utilities built to get you a result quickly and get out of your way.

The site is built incrementally, one tool category at a time, rather than launching a huge catalogue of thin or unfinished pages. If a category page doesn't have tools listed yet, that's because they genuinely haven't been built yet — not a placeholder pretending otherwise.

Where it's technically practical, tools that work with your files do the processing locally in your browser rather than uploading them to a server. Each tool page will say clearly how it handles your data.