Short version: we never see your files or text.
All processing happens locally in your browser. When you use a tool, your file or text is read into browser memory — it is not uploaded, not sent, and not stored by us.
Like almost every website, our host logs standard server data (IP, User-Agent, URL, timestamp) for security. We also use Google AdSense, which sets cookies and collects usage data.
简要版：我们永远不会看到你的文件或文本。
所有处理都在浏览器本地完成。当你使用某个工具时，文件或文本被读入浏览器内存，不会上传、不会发送、不会被我们存储。
与几乎所有网站一样，我们的托管商记录标准服务器日志（IP、User-Agent、请求 URL、时间戳）用于安全与排障。我们也使用 Google AdSense 投放广告并收集使用数据。