Small tools, done right.

Tooltip Kit is a growing index of 93 everyday tools across 10 categories — calculators, converters, text utilities, developer helpers, and more. Each one is built around a single idea: a good tool should open instantly, do one job well, and respect your privacy.

That is why every tool here runs entirely in your browser. Your files, text, and numbers never get uploaded to a server, because there is no server doing the work — the computation happens on your device. It is faster, it works offline once loaded, and your data stays yours.

Built to scale

Tooltip Kit is engineered as a static, SEO-first site that can grow to thousands of tools without slowing down. Every tool page is pre-rendered, ships only the code it needs, and includes a full guide, benefits, and FAQ so it is genuinely useful — not just a thin widget.

Free, and staying that way

All tools are free with no account required. We keep the project sustainable with light, clearly-marked ads — never by locking the tools behind a paywall.