About Toolbase
Small tools that run in your own browser. The sort of thing you need once, use for thirty seconds, and close.
Why nothing is uploaded
There is no server doing the work. When you paste text or choose an image, it is processed by your own device and never sent anywhere. That is not a promise on a page: the site ships a Content-Security-Policy that only allows it to talk back to its own origin, so the code could not upload your data even if it were written to.
The practical upshot is that these tools work on things you would not paste into a random website: a token from your logs, a contract in a spreadsheet, a photo with your home in the background.
No accounts, no clutter
Nothing here asks you to sign up, and there is no cookie banner, because there are no cookies to consent to. Your preferences, such as the theme or an indent width, stay in your browser. If you block storage entirely, the tools still work; they just forget your settings.
How it is built
Static pages, system fonts, and one small piece of code per tool that only downloads when you open that tool. Work that could block the page, such as testing a regular expression or re-encoding an image, runs in a background worker so the page stays responsive even when a job goes wrong.