About
KeptTools is a small set of free developer tools for formatting, encoding, and everyday image work. Each tool has its own page, and the work stays in your browser.
No account
Open a tool and use it. There is nothing to sign up for, and nothing is saved to a profile.
On this device
Text, tokens, and images are handled in the page. KeptTools does not take a copy of what you paste or drop in. That means no server-side upload of your paste — not that a malicious extension or shared machine is impossible.
One job each
Every page says what the tool does and where it stops, so you can tell if it fits the task. For example, the JWT decoder reads the header and payload locally and does not verify the signature.
Start here
More detail lives on the about page and privacy policy.