Everything runs in your browser
Every tool here processes your input locally with JavaScript — nothing you paste is uploaded to a server. That matters more than it sounds: API responses contain bearer tokens, JWTs contain user data, and diffs contain unreleased code. Paste them into a server-side tool and you have shipped that data to a stranger; paste them here and it never leaves your machine. The text-heavy tools (JSON formatter, diff checker, YAML converter) also run full-width with resizable editors sized for real payloads.
Frequently Asked Questions
Is my data uploaded when I use these tools?
No. All processing happens locally in your browser — you can load a tool, disconnect from the internet, and it keeps working. Nothing you paste appears in our logs because it is never sent to us.
Do I need an account or API key?
No. Every tool is free with no signup, no rate limits, and no tracking of your inputs.