About Pageonaut

Pageonaut is a collection of 125+ free online tools — calculators, converters, PDF and image utilities, generators and skill tests — built on one simple promise: everything runs in your browser. Your files, numbers and text are processed on your device and never uploaded to a server. No account, no paywall, no watermarks.

Who we are

Pageonaut is made by ByteGleam GbR, a small German software studio run by its two founders, Henrik Hartwich and Leon Wienekamp. We build and operate the site ourselves — the code, the content and the infrastructure. The full legal details are in the imprint.

Why it's free

The site is funded by unobtrusive advertising, which only loads after you accept it in the cookie banner. That model lets us keep every tool free and avoid the usual tricks: no "3 conversions per day" limits, no locked features, no email walls. More on this in the help center.

How we build and test tools

Every tool follows the same standard before it ships: it must work entirely client-side where technically possible, be usable in under ten seconds without instructions, and be verified against known-correct results — for calculators that means worked examples checked by hand, for converters round-trip tests, for file tools output opened and inspected. Each tool page documents its method in the guide below the tool, states its limits honestly (for example, gross-vs-net in pay calculators), and carries an updated date. When a tool can't meet the browser-only bar, we say so on the page rather than quietly uploading your data.

Suggest a tool, report a bug

A good part of the catalog exists because someone asked for it. If a tool you need is missing or something is off, tell us via the contact page or email hello@pageonaut.com — we read everything.