隐私政策

最后更新：2026 年 8 月 10 日

FreePaint 浏览器扩展与 FreePaint / 画图APP 网页版都不会收集你的任何个人信息。你的截图和标注始终留在你自己的设备上。

我们不收集什么

不收集截图、图片或你在画布上写下的任何内容。
不收集你访问的网址、页面内容或浏览记录。
不收集姓名、邮箱、账号等身份信息 —— 本产品没有账号体系。
不出售、不出租、不与任何第三方共享任何数据。

你的截图去了哪里

哪儿也没去。截图的解码、裁剪、标注和导出全部在你的浏览器内完成，没有服务器可以接收它们。

为了避免误关标签页丢失作品，画布内容会自动备份到浏览器本地的 IndexedDB 中；扩展在截图与画布之间传递图片时，会短暂写入 Chrome 本地存储（chrome.storage.local），画布取走后即删除。这两处都在你的设备上，我们无法读取。清空画布或卸载扩展即可清除。

扩展申请的权限，以及为什么

activeTab —— 给你刚刚指定的那一个标签页拍照，且仅在那一刻。
scripting —— 在页面上画出框选浮层，以及读取右键点中的图片的位置与尺寸。你不主动调用，就什么都不会注入。
storage / unlimitedStorage —— 在后台取到截图与画布收下截图之间做一次本地中转。截图体积超过默认配额，所以需要后者。
contextMenus —— 在右键菜单里加入"用 FreePaint 标注这张图片"等入口。

扩展不申请任何网站的访问权限（no host permissions）。它无法在后台读取任何页面，只能看到你主动要求截取的那一个标签页。

网站与扩展的区别

Chrome 扩展内不含任何统计代码，也不加载任何远程脚本。

网页版 huatu.app / freepaint.app 使用 Google Analytics 统计聚合访问量（页面浏览量、大致地区、设备类型），用于了解有多少人在用。这项统计不涉及你的图片内容，也不会把你识别为特定个人。你可以用浏览器的拦截扩展或"请勿跟踪"设置屏蔽它。相关说明见 Google 隐私政策。

儿童

本产品不针对儿童，也不会有意收集任何人的个人信息。

政策变更

如果以后有任何变化，我们会更新本页并修改顶部的日期。若变更涉及数据处理方式，会在扩展更新说明中一并告知。

联系

有疑问可以通过 Chrome 应用商店中本扩展详情页的"支持"标签联系我们，或访问 freepaint.app。

Privacy Policy

Last updated: 10 August 2026

Neither the FreePaint browser extension nor the FreePaint web app collects any personal information. Your screenshots and annotations stay on your own device.

What we do not collect

No screenshots, images, or anything you draw or type on the canvas.
No URLs, page content, or browsing history.
No names, email addresses or accounts — there is no account system.
Nothing is sold, rented or shared with any third party.

Where your screenshots go

Nowhere. Decoding, cropping, annotating and exporting all happen inside your browser. There is no server to send them to.

So that closing a tab by accident does not destroy your work, the canvas is backed up to IndexedDB in your own browser. While a capture travels from the extension's background worker to the canvas page, it is written briefly to chrome.storage.local and removed once the canvas has taken it. Both live on your device and are unreadable to us. Clearing the canvas or uninstalling the extension removes them.

The permissions the extension asks for, and why

activeTab — to photograph the one tab you just acted on, and only at that moment.
scripting — to draw the selection overlay on the page and to read the size and position of a right-clicked image. Nothing is injected until you invoke the extension.
storage / unlimitedStorage — to hand a capture from the background worker to the canvas page. Screenshots exceed the default quota, hence the latter.
contextMenus — to add "Annotate this image with FreePaint" to the right-click menu.

The extension requests no host permissions. It cannot read any page in the background; it only ever sees the single tab you asked it to capture.

The website differs from the extension

The extension contains no analytics and loads no remote scripts.

The web app at freepaint.app / huatu.app uses Google Analytics for aggregate traffic figures — page views, rough region, device type — to see how many people use it. It never touches the contents of your images and does not identify you personally. A content blocker or Do Not Track setting will stop it. See Google's privacy policy.

Children

This product is not directed at children and does not knowingly collect personal information from anyone.

Changes

If anything changes we will update this page and the date at the top. Changes that affect how data is handled will also appear in the extension's update notes.

Contact

Reach us through the Support tab on the extension's Chrome Web Store listing, or at freepaint.app.