About ToolBoxGenie
ToolBoxGenie is a collection of 25 free online utilities — calculators, text tools, developer helpers, image and PDF tools and unit converters — that work without an account and without uploading anything.
Why the site exists
Small tasks eat a surprising amount of time. Working out what a loan really costs, checking an essay against a word limit, pretty-printing an API response, converting a recipe from cups to grams. Each one takes a minute, and each one usually means finding a website covered in pop-ups that wants your email address first.
ToolBoxGenie started as a straightforward answer to that: a clean page, a tool that works immediately, and an explanation of the method underneath so the number can be checked rather than merely trusted.
How the tools are built
Everything runs client-side. When you open the JSON formatter, the parser is downloaded to your browser and runs there. When you compress an image, the browser’s own canvas engine does the work. No file is uploaded, no text is transmitted, and no calculation touches a server we operate.
That architecture has three consequences we care about. It is faster, because there is no round trip. It is private, because there is nothing to store. And it keeps working offline once the page has loaded.
How content is written
Every tool page includes a worked example, a step-by-step guide and a set of genuine questions with real answers — the difference between markup and margin, why a 20% discount is not undone by a 20% increase, why a JSON parse error usually points one line past the actual mistake.
Where a convention is contested, the page says which one it uses. Where a tool has limits, the page says so: BMI does not work for athletes, a regex cannot parse HTML, and a business-day count cannot know your local public holidays.
How the site is funded
ToolBoxGenie is free and supported by advertising. Ads are clearly labelled and placed outside the working area of every tool — never next to a Calculate, Copy or Reset button, and never styled to resemble site content. If an ad ever looks like part of a tool, tell us and it will be moved.
We do not sell data, and there is no data of yours to sell — see the privacy policy for exactly what our advertising partner does and does not receive.
What is next
The catalogue currently holds 47 tools across 6 categories, with 22 still in development. Tools are published only once they work properly and have real supporting content — a bare calculator behind a promising title is not worth anybody’s click.
Suggestions for new tools are genuinely welcome. The contact page is the fastest way to reach us.