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Privacy policy · 隐私政策

Local-first, explained plainly.

Smart Tab Timer only processes information needed to manage and safely close tabs. Extension data stays on your device and is not uploaded to us.

English简体中文Effective August 11, 2026
English

Smart Tab Timer Privacy Policy

Smart Tab Timer processes extension data only to provide its user-facing tab timer, safety, automation, restore, settings, and statistics features. This processing happens locally in Chrome on your device. We do not receive, sell, share, or use this data for advertising or profiling.

Information processed locally

The extension may process and store the following information on your device:

  • tab titles, URLs, favicons, tab IDs, pinned state, and audible state;
  • timers, site rules, safety preferences, warning settings, and language choice;
  • up to 20 pages recently closed by the extension for the Restore feature;
  • aggregate local counts such as closed, protected, snoozed, and restored tabs;
  • temporary timestamps indicating recent interaction with a managed page.

Page safety checks

When the extension has access to a managed page, it can locally determine whether media is playing and whether a form or editable area has received input. It sends boolean safety states to the extension background only. It does not read, record, store, or upload the contents of form fields, documents, messages, or page text.

How the information is used

  • schedule, update, cancel, and safely execute tab-closing tasks;
  • postpone pages that match an enabled protection rule;
  • apply allowlist and automatic-timer site rules;
  • restore pages recently closed by the extension;
  • show local usage summaries and preserve user preferences.

Storage, retention, and deletion

Tasks, rules, settings, recent-close records, and aggregate statistics are stored in Chrome extension local storage. Recent interaction timestamps use session storage and are cleared when the browser session ends. Users can cancel tasks, clear restore records, remove rules, reset statistics, revoke optional site access, or uninstall the extension to remove its locally stored data.

Permissions

  • tabs: list and manage tabs selected for timed closing.
  • storage: save tasks, rules, preferences, restore records, and statistics locally.
  • alarms: reliably trigger timers after the extension background sleeps.
  • notifications: warn before closing and offer cancel, snooze, or override actions.
  • activeTab: temporarily enable page features after an explicit user action.
  • scripting: inject the timer overlay and local safety checks only on managed pages that the extension can access.
  • contextMenus: provide right-click timer and site-rule shortcuts.
  • optional site access: enable persistent page enhancement only when the user opts in from Settings.

No external transfer or remote code

Smart Tab Timer has no account system, analytics SDK, advertising SDK, external API, cloud database, or remote executable code. Extension data is not transmitted to The Best Tools or any third party. Exported backups are created only after a user action and saved to a location selected by the user.

Chrome Web Store Limited Use

Smart Tab Timer's use of information received from Chrome APIs complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. Information is used only to provide or improve the extension's clearly described, user-facing features.

Changes and contact

Material policy changes will be posted on this page with a revised effective date. For privacy questions, contact support@thebesttools.net.

简体中文

Smart Tab Timer 隐私政策

Smart Tab Timer 仅为标签页定时、安全保护、站点自动化、恢复、设置和统计等用户可见功能处理必要信息。所有处理均在你设备上的 Chrome 本地完成。我们不会接收、出售、共享这些信息,也不会将其用于广告或画像。

在本地处理的信息

插件可能在你的设备上处理并保存:

  • 标签页标题、网址、站点图标、标签 ID、固定状态和音频状态;
  • 定时任务、站点规则、安全偏好、提醒设置和语言选择;
  • 最多 20 条由插件关闭的页面记录,用于恢复功能;
  • 已关闭、保护、延后和恢复标签页数量等本地汇总统计;
  • 用于判断托管页面近期是否仍有操作的临时时间戳。

页面安全检测

当插件拥有托管页面的访问权时,会在本地判断页面是否正在播放媒体,以及表单或可编辑区域是否发生过输入。插件只向自身后台返回布尔安全状态,不读取、不记录、不保存也不上传表单字段、文档、消息或网页正文内容。

信息用途

  • 创建、更新、取消并安全执行标签页关闭任务;
  • 对命中已启用保护规则的页面进行延后;
  • 应用白名单和自动计时站点规则;
  • 恢复最近由插件关闭的页面;
  • 显示本地使用汇总并保存用户偏好。

保存期限与删除方式

任务、规则、设置、最近关闭记录和汇总统计保存在 Chrome 扩展本地存储中。近期操作时间戳使用会话存储,并在浏览器会话结束后清除。用户可以取消任务、清空恢复记录、删除规则、重置统计、撤销可选站点权限,或通过卸载插件删除其本地数据。

权限用途

  • tabs:列出并管理用户选择定时关闭的标签页。
  • storage:在本地保存任务、规则、偏好、恢复记录和统计。
  • alarms:在插件后台休眠后继续可靠触发定时任务。
  • notifications:关闭前提醒,并提供取消、延后或明确覆盖保护的操作。
  • activeTab:用户明确操作当前页后,临时启用页面增强能力。
  • scripting:仅在插件有权访问的托管页面注入倒计时和本地安全检测。
  • contextMenus:提供右键定时和站点规则快捷入口。
  • 可选站点权限:仅在用户从设置中主动开启时,提供持续的页面增强保护。

不向外部传输,不执行远程代码

Smart Tab Timer 不包含账号系统、分析 SDK、广告 SDK、外部 API、云数据库或远程执行代码。插件数据不会传输给 The Best Tools 或任何第三方。备份文件仅在用户主动导出时生成,并保存到用户选择的位置。

Chrome Web Store 有限使用承诺

Smart Tab Timer 对 Chrome API 信息的使用遵守 Chrome Web Store 用户数据政策,包括 Limited Use 要求。相关信息仅用于提供或改进插件已明确说明的用户可见功能。

政策更新与联系方式

如本政策发生重大变化,我们会在本页面更新并注明新的生效日期。如有隐私问题,请联系support@thebesttools.net。

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