The problem
Too many tools
ask for too much.
Most online tools have a form to fill, a plan to pick, or a tracker to accept. You just wanted to decode a JWT. You end up in a marketing funnel.
The web should be faster than that. A tool should open, work, and close. That is the entire contract.
The answer
Utilities that run
in your browser.
Every tool on uuutils processes data locally. Nothing is sent to a server. There is no backend. Your input stays on your machine and disappears when you close the tab.
Works offline too. Load it once, disconnect, and it keeps working.
Design principles
How every tool
gets built.
Each tool does a single thing. No feature creep, no extras nobody asked for. If a tool starts growing, it gets split.
Data never leaves your machine. All processing happens in the browser. No API calls, no logs, no uploads.
No signup. No cookie consent walls that bury the tool. No prompts to install an app. You land on the tool. You use the tool.
No heavy frameworks, no render-blocking assets outside what is strictly needed. Pages load fast on slow connections.
Once a page is cached, it keeps working without a network. Useful for air-gapped environments or spotty connections.
No freemium tier, no rate limits, no pro plan. Every tool on this site is free to use as many times as needed.
Why it exists
I kept reaching for the same five tools every week. JWT decoder, JSON formatter, a base converter, a regex tester. Every site I found was cluttered, slow, or wanted an account before it would show me anything useful.
So I built the versions I wanted. Small. Fast. No noise. Tools that load instantly and do not require me to remember a password.
uuutils is not a startup. There is no roadmap deck, no growth target, no investor. It is a set of pages on the internet that do useful things. I add a new tool when I find myself needing one. I fix things when they break. That is the whole operation.
If a tool here saves you ten seconds, that is good enough. No need to sign up, share, or subscribe. Just use it and get back to the work.
No account needed. Pick one and go.