About Tools Guru
Tools Guru is an independent website that publishes 106 small, free, single-purpose tools which run inside your browser. This page explains who builds it, how it is funded and what we will and will not do with your data.
What we are
Tools Guru started in January 2024 out of a specific frustration: almost every "free online tool" required an upload, an account, or both, to perform a calculation that a browser has been capable of doing on its own for a decade. A percentage calculator does not need a server. Nor does merging two PDFs, resizing a photograph, or generating a QR code. So we built the versions we wanted to use, and then kept going until there were 106 of them.
The site is deliberately plain. There is no onboarding, no modal asking for an email address, and no upsell to a paid tier, because there is no paid tier. You arrive, you get your answer, you leave.
Who builds it
Tools Guru is made by a three-person independent team in Punjab, Pakistan. Between us we have been shipping front-end software since 2011, across fintech, publishing and developer tooling. We are not a venture-backed company and we do not employ a marketing department; the same people who write the code write these pages.
How the tools are built and checked
Every tool is written in plain JavaScript with no framework, which is why pages open in well under a second. Where a tool implements a published formula — EMI, compound interest, body mass index, body fat percentage, GPA, Zakat — we implement it from the primary source and then verify our output against at least one independent reference implementation before release. Where a tool handles a file format, we use the established open-source library for that format rather than rolling our own parser.
The full process, including how we handle corrections and how often each category is re-reviewed, is documented in our editorial policy.
Privacy, in one paragraph
Of the 106 tools, the large majority never transmit your input anywhere. The processing runs in the browser tab using standard APIs — Canvas, Web Crypto, the File API and WebAssembly. Ten tools genuinely require a network call because they depend on live third-party data: currency rates, weather, nutrition lookup, recipe search, AI image generation, hosted background removal, speech transcription, quiz generation, IP lookup and the speed test. Those ten carry a visible "online" badge. The complete detail is in our privacy policy.
How we are funded
Tools Guru is funded entirely by display advertising served through a third-party ad network, plus Google Analytics for aggregate traffic measurement. We take no payment for placement, ranking or favourable description of any product, and we run no affiliate links. Advertising scripts are deliberately loaded 1.2 seconds after the page has finished rendering so that they cannot slow down the tool you came for.
Accessibility
We target WCAG 2.2 Level AA. That means keyboard access to every control, visible focus indicators, a skip-to-content link, labelled form fields, colour contrast that clears the 4.5:1 threshold for body text, touch targets of at least 44 by 44 pixels, and full functionality at 200% zoom. If you hit a barrier, tell us and we will treat it as a bug.
Corrections and contact
If a calculator disagrees with your own working, we want to know. Send the inputs you used and the result you expected to sophiaanjum05@gmail.com and we will reproduce it. Confirmed calculation errors are fixed and noted on the tool page. Other ways to reach us are on the contact page.