About

What ToolZen is

ToolZen is a set of 30 free browser tools across 6 categories — encoders, formatters, validators, converters, colour utilities and SEO helpers. No account, no sign-up, no trial. You open a page, use the tool, and leave.

Who makes it

ToolZen is built and maintained by iClaude, working alone. It is a personal project, not a company: no team, no funding, no roadmap decided by anyone else. That has a good side and a bad side. The good side is that nothing here exists to upsell you. The bad side is that fixes land when one person has the evening free.

How the tools handle your data

Most of the tools are marked client: the code runs inside your browser tab and your input never reaches the server. Paste a JSON blob into the formatter and it is parsed by your own CPU. Close the tab and it is gone. There is nothing to delete because nothing was stored.

A few tools cannot work that way. A network diagnostic has to make a request from somewhere, so it makes it from the server. Those tools are labelled server or hybrid on the page itself, next to the title. When a tool is labelled that way, the minimum data needed is sent, used for that one response, and not kept.

What this site is not

It is not a replacement for a real toolchain. For anything sensitive — credentials, health data, client contracts, internal source code — use software your organisation controls, not a free web page. The tools here are for the throwaway tasks: reformatting a snippet, checking a colour contrast ratio, decoding a token you are debugging.

How it pays for itself

Hosting and the domain cost money, so the site carries advertising. That is the whole business model. The tools are not degraded to push a paid tier, because there is no paid tier.

Getting in touch

Bug reports and tool requests are welcome — they are the main reason the catalogue has grown.