About

InputTestHub is a collection of 2284 small tools — the kind you look up once a month, use for forty seconds and close. Word counters, PDF merging, unit conversion, JSON formatting, a BMI check, a QR code. Individually none of them is impressive. Collectively they are the reason you keep a browser tab open.

Why it exists

Most tool sites make the same trade: the tool is free, but you pay in friction. An upload wait for a file that never needed to leave your machine. A watermark. Three conversions a day, then a sign-up wall. A cookie banner with no reject button. An interstitial ad between you and the download.

This site takes the opposite position. Nothing needs an account. Nothing is capped. Image and PDF tools run on your own device using Canvas and WebAssembly, so your file is never transmitted anywhere — you can turn off your internet connection after the page loads and merge a PDF anyway. That is not a marketing claim; open your browser's Network tab and watch it stay silent.

How the tools are built

Every calculator prints its formula and its intermediate values, so a result can be checked by hand rather than trusted. Every converter shows the exact factor it used. Where a tool has a real limitation — BMI cannot tell muscle from fat, a syllable counter gets irregular English words wrong, a plagiarism checker cannot search the web — the page says so plainly instead of hiding it.

The site is plain PHP and vanilla JavaScript. No framework, no build step, and one analytics tag — Google Analytics, which counts page views and nothing else. Pages are small and load in one round trip because that is what makes a utility feel instant.

How it is funded

Advertising, eventually, placed where it does not sit between you and the thing you came for. There is no paid tier, no "pro" version and no plan to add one. If a tool is on the site it does the whole job.

Suggest a tool

If something you need is missing, say so. The list grows from what people actually ask for.