The short version
The content you put into our tools — code, images, text, conversions — never leaves your browser. Every tool runs locally in JavaScript. We do use anonymous, aggregated analytics (Google Analytics) to understand which pages are useful, and we do not sell or share any personal data.
What we collect
Tool content: nothing. Your JSON, images, text and values stay on your device and are never uploaded, transmitted or stored. Site analytics: anonymous. We use Google Analytics to count page views, approximate region and browser type. This data is aggregated and does not identify you personally.
How our tools work
All processing — JSON formatting, image compression, unit conversion, Base64 encoding, word counting and more — is performed by JavaScript running in your browser. Your files and text are never uploaded, never transmitted, and never stored on any server.
Data stored on your device
We use your browser's localStorage only to remember one setting: your preferred language (English or Chinese). This stays on your device and can be cleared at any time through your browser settings.
Analytics and cookies
This site uses Google Analytics (GA4) to measure anonymous usage. GA4 may set cookies (such as _ga) and collect anonymised signals including approximate location, device type and pages visited. You can block or delete these cookies in your browser settings, or use Google's opt-out tools. Google's handling of this data is governed by Google's Privacy Policy.
Advertising
This site does not currently show advertising. If we enable advertising in the future (for example Google AdSense), advertising cookies set by Google and its partners may be used to serve and measure ads, and this policy will be updated to disclose it clearly before any ads go live.
Your rights
Because we hold no personal data about you beyond anonymised aggregate analytics, there is nothing to access, correct, export or delete on our side. If you have questions about this policy, contact us.
Changes to this policy
If this policy ever changes, the date at the top of this page will be updated. We will never start collecting personal data without updating this document first.