About Tenuko

Tenuko is a collection of the small, useful tools everyone searches for - percentage calculators, unit converters, PDF utilities, word counters, password generators - gathered in one fast, clean place.

Everything runs in your browser

Unlike most tool sites, Tenuko has no server-side processing at all. When you merge a PDF, compress an image or paste text into a counter, the work happens locally on your device using your browser's own capabilities. Nothing you type, paste or upload is ever sent to us - we couldn't read it if we wanted to.

Free means free

No accounts, no trials, no watermarks, no "3 free uses per day". The site is supported by unobtrusive advertising and by pointing you at other products we build - the tools themselves are free forever.

Found a bug or want a tool we don't have?

We add tools based on what people actually need. Get in touch and tell us what's missing.