简下下载助手 · 产品文档
把需要的网页媒体，保存到本机。
简下下载助手帮助你在桌面浏览器中发现、查看并下载有权保存的网页视频、音频和图片。
这是产品说明、隐私、条款和支持文档站。官网功能请通过下方链接手动访问；本站不提供交易、授权查询或登录，也不会自动跳转。
免费核心功能
固定每天 10 次下载，按本机日期重置，不随安装天数减少；失败任务不永久扣次数。基本功能无需付费或登录。
- 发现媒体直链、支持的 HLS（m3u8）与静态 DASH（MPD）。
- 按视频、音频、图片分类，复制资源地址，选择可用清晰度与音轨。
- 查看任务队列和进度，对受支持的任务暂停、恢复、重试或取消。
可选 Pro 许可
Pro 取消每日下载次数限制，开放批量下载、最多 8 个并发任务、支持的 HLS 直播录制，以及扩展完整本地转换。
本地转换包括视频转 MP4、音频转 MP3、提取音频和合并音视频。处理使用随扩展打包的媒体组件及浏览器 WebCodecs，媒体不上传至我们的服务器。官网本地转换工具可免费使用。
可选付费方案、有效期和设备限制见服务条款；购买与激活在原官网及扩展中完成。
开始使用
- 通过官网查看安装帮助，在受支持的桌面浏览器中安装扩展。
- 打开你有权保存的媒体页面，播放几秒后点击扩展图标打开侧栏。
- 检查当前页面发现的资源；需要时点击“重新检测”，选择资源或可用质量后开始下载。
- 在任务列表查看进度，保存完成后检查文件能否正常打开。
兼容性与使用边界
当前说明面向 Windows、macOS、Linux 上的桌面 Chrome 116+；手机浏览器不支持安装。网站结构、媒体格式、链接有效期、访问权限和设备资源都会影响结果。受保护内容、动态 DASH 和过期链接可能无法处理，不保证兼容所有网站。
仅保存你拥有权利或已获许可的内容，并遵守来源网站的适用规则。本产品不绕过 DRM、付费墙或账户权限；付费许可不授予原媒体的版权或访问权。
当前 1.0.1 实现包含 YouTube 特定媒体采集与下载逻辑；这不代表来源网站授予下载权利，也不代表已通过扩展商店审核。请同时遵守内容权利、来源网站规则和商店政策。
数据与联系
网页与媒体资源在本机发现和处理。原始媒体网站会收到正常资源请求及适用的浏览器凭据；可选授权、购买和支持服务会处理相应凭据、随机实例标识、交易与必要请求日志。完整说明见隐私政策。
JIANXIA DOWNLOAD · PRODUCT DOCUMENTATION
Keep the web media you need on your device.
Jianxia Download helps you discover, inspect and download webpage videos, audio and images you are authorized to save in a desktop browser.
This site hosts product information, privacy, terms and support documents. Open the official website manually through the link below for its features. This documentation site does not provide transactions, license lookup or login, and does not redirect automatically.
Free core features
The free edition provides 10 downloads every day, resets on your local date and does not decrease with installation age. Failed tasks do not permanently consume the allowance. Core features require neither payment nor login.
- Discover direct media URLs, supported HLS (m3u8) and static DASH (MPD).
- Browse video, audio and image categories, copy URLs and select available quality and audio tracks.
- View the download queue and progress; pause, resume, retry or cancel supported tasks.
Optional Pro license
Pro removes the daily download-count limit and unlocks batch downloads, up to 8 concurrent tasks, supported HLS live recording and full local conversion in the extension.
Local conversion includes video to MP4, audio to MP3, audio extraction and video/audio merging. Bundled media components and browser WebCodecs process media locally without uploading it to our servers. Website conversion tools are free.
See the terms of service for optional plans, validity and device limits. Purchase and activation take place on the original website and in the extension.
Getting started
- Read the installation help on the official website and install the extension in a supported desktop browser.
- Open media you are authorized to save, play it for a few seconds, then click the extension icon to open the sidebar.
- Inspect resources detected on the current page. Use Scan again if needed, select a resource or available quality, and start the download.
- Check task progress and verify that the saved file opens correctly.
Compatibility and use boundaries
This information covers desktop Chrome 116+ on Windows, macOS and Linux. Mobile extension installation is not supported. Results depend on website structure, media formats, expiring URLs, access permissions and device resources. Protected content, dynamic DASH and expired URLs may not be handled; compatibility with every website is not guaranteed.
Save only content you own or have permission to save, and follow the source website’s applicable rules. The product does not bypass DRM, paywalls or account permissions. A paid license grants no copyright or access rights to the original media.
The current 1.0.1 implementation includes YouTube-specific media capture and download logic. This does not mean the source website grants download rights or that an extension store has approved the product. Follow content rights, source website rules and store policies.
Data and contact
Webpage and media resources are discovered and processed on your device. Original media websites receive ordinary requests and applicable browser credentials. Optional licensing, purchasing and support services handle related credentials, random instance identifiers, transactions and necessary request logs. Read the privacy policy for full details.
Support: xyptkd1991_downloads@2925.com