Privacy policy

Last updated: 2026-10-13.

Data you enter into tools

Formatters, validators, converters, generators, the diff checker and the time tools process your input locally in your browser. That input is not transmitted to or stored on our servers.

Code execution

JavaScript, TypeScript and Python run in a sandboxed Web Worker in your browser. When you run code in a language that requires a server (such as PHP), the source code and standard input are sent to an isolated execution sandbox, executed once and not retained.

Accounts

Accounts are optional. When you sign in with Google we receive and store your Google account ID, name, email address and profile photo URL. We keep a secure session cookie to keep you signed in; only a hash of the session token is stored on our server. You can delete your account at any time from the account page.

Sign-in and code execution are protected by Google reCAPTCHA v3, which is subject to Google's Privacy Policy and Terms of Service.

Payments

Pro subscriptions are processed by Stripe. We never see or store your card details; we store only your Stripe customer ID and subscription status.

Preferences

Your theme preference is stored in your browser's local storage. It never leaves your device.

Advertising and analytics

If advertising is enabled, Google AdSense may use cookies to serve and measure ads. You can manage personalised advertising in your Google ad settings. Premium plans are ad-free.

Contact

Questions about this policy can be sent through the contact details listed on the about page.