Privacy Policy

1. Zero Server-Side File & Data Processing

At 200Tool, privacy is fundamentally embedded in our software architecture. Unlike traditional online utilities that upload your sensitive documents, financial calculations, images, and code snippets to cloud servers, all calculations and file transformations on 200Tool are performed 100% locally within your web browser using client-side JavaScript, Web Workers, Canvas APIs, and WebAssembly.

Your PDFs, photos, invoices, passwords, and JSON datasets never leave your device.

2. LocalStorage and IndexedDB Usage

We use browser LocalStorage and IndexedDB solely to improve your personal user experience. Specifically, we store:

• Your theme preference (Light, Dark, or System mode)
• Your bookmarked favorite tools
• Recently accessed tools list (maximum 15 items)
• Locally saved calculation drafts (such as invoices or grade sheets)

This data is stored strictly on your local device and is never synchronized to an external database. You can clear this anytime using the Clear Local Data button in the Saved tools hub.

3. Advertising & Cookies

To keep 200Tool 100% free for millions of students, developers, and professionals worldwide, we display non-intrusive advertisements served by third-party advertising partners such as Google AdSense.

Google and its advertising partners may use cookies to serve ads based on prior visits to our website or other sites on the Internet. You can manage or disable personalized advertising by visiting Google Ads Settings.

4. Analytics & Telemetry

We may collect anonymous aggregate metrics (e.g. page views, tool popularity) to optimize website performance and Core Web Vitals. We do not collect personally identifiable information (PII), credit card numbers, or calculation payload values.