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Powerful browser extension! One-click download of web videos/documents/images, supports M3U8 video parsing, WYSIWYG, free and open source Cat Catch

📚Video Course
📂Plugins & Scripts
🕒Last updated: 07/27/2026
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Description

Cat Catch (cat-catch) is a resource sniffer extension that helps you filter and list resources on the current page. It can automatically capture web videos and also supports M3U8 parsing, downloading, and merging. It makes it convenient for users to obtain resources from web pages. This plugin is also a long-established extension and supports most mainstream video websites (Bilibili, Weibo, etc.).

Plugin Features
Completely free, unlimited use, supports Chrome, Edge and other browsers
No account registration required, ready to use after installation, supports most mainstream video websites, supports parsing m3u8 (does not support parsing Douyin)
Whether it is video, audio, images, or even documents, just one click to download!
A long-established extension plugin, very good
FAQ

❌ Some videos just cannot be captured? → A few platforms have strong encryption protection (such as some paid courses), and Cat Catch indeed cannot capture them; this is normal
❌ The panel shows many entries and you do not know which to choose? → Prefer the one with type Video or MP4 and the largest file size, which is usually the main video

Plugin Screenshots

Usage Tutorial
How to install a .crx file?

  1. Some browsers may block online installation of .crx files from this store. If so, you can do the following:
  2. Enter chrome://extensions in the browser address bar and check "Developer mode".
  3. Find the .crx installer you just downloaded and drag it to the extension management page.

How to install a .zip file?

  1. When the .crx file fails to install or the extension cannot be enabled, you can try the .zip file as follows:
  2. Extract the .zip file to any directory.
  3. Enter chrome://extensions in the browser address bar and check "Developer mode".
  4. Click the "Load unpacked" button and select the directory extracted in step 2 to install.

Supporting Study Materials

This course comes with a materials pack. Members receive the access link by email after requesting the course.

Subscribe and unlock the course to view the supporting materials access links.

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