About Eazy Toolbox
A small collection of single-purpose tools that do one thing, load fast, and do not ask you to sign up for anything.
What this site is
Eazy Toolbox is a set of free online utilities: developer tools, unit converters and everyday calculators. Each one has its own page, does a single job, and works without an account, an install or a paywall.
The tools exist because the alternatives are usually worse. Searching for something as ordinary as formatting a blob of JSON or converting kilograms to pounds tends to land you on a page that loads for four seconds, moves under your cursor as adverts settle in, and buries the actual input field below three paragraphs of padding. Every page here puts the tool directly under the heading, and the explanation afterwards for those who want it.
Who runs it
Eazy Toolbox is built and maintained by Etienne Delpech, working alone. There is no company behind it and no team — which means bug reports reach the person who can actually fix them.
If something gives a wrong answer, says something unclear, or breaks on your device, write to etienne.delpech5@gmail.com. A conversion that is off in the last decimal place is a genuine bug here, not a rounding detail, and it gets treated as one.
Your data stays on your device
Almost every tool on this site runs entirely in your browser. What you paste into the JSON formatter, the JWT decoder or the hash generator is processed by JavaScript on your own machine and is never transmitted anywhere. This is not a policy promise that could quietly change — it is how the site is built. There is no backend to receive your input: the whole site is a folder of static files.
There is exactly one exception, and it is unavoidable. The "What is my IP" tool has to ask a service outside your browser, because a browser cannot see the address its own packets carry once your router and your provider have rewritten it. That page names the providers it contacts and says plainly what leaves your device.
How it is paid for
Hosting costs money, so the plan is to fund the site with advertising. Adverts are not displayed today. When they are, they will sit around the content rather than inside it: never above the tool, never covering it, and never disguised as part of it.
The alternative funding models are worse for you. Selling analytics data would mean collecting far more than the site collects. Locking tools behind an account would mean a converter that requires a password. Advertising, kept modest, is the model that leaves the tools free and the input private.
How it is built
The site is a static export: every page is complete HTML before any JavaScript runs, so it works on a slow connection and stays readable if a script fails to load. The calculations behind the converters and calculators have automated tests covering their exact conversion factors and edge cases, because a calculator that is quietly wrong is worse than no calculator at all.
Tools are added based on what people actually search for, not to inflate the page count. A tool earns a page when it answers a real question; a variation that answers the same question does not get a second one.
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