Browser extension

321tube Video Downloader

Grab videos from 321tube and save them as MP4 files on your device using a browser extension that works entirely offline.

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CEF

3 free trusted users

Easy one-click downloads

Privacy-friendly

No ads or watermarks

Regular updates

Automatically identifies video streams on 321tube pages

Downloads save as universally compatible MP4 files

All processing stays local on your device

Simple one-click workflow from detection to download

Compatible with all major desktop browsers

About 321tube Video Downloader

321tube Video Downloader is a browser extension that adds download capabilities to 321tube pages. When you visit a video, the extension detects available streams and offers them for local saving.

There is no need to copy URLs into external websites or run separate desktop applications. The extension handles detection, format selection, and file saving all within your browser window.

Every download is processed on your own computer. Your media files never pass through remote servers, keeping your activity private and your saved files immediately available.

Walkthrough

How it Works

No command line, no screen recording, and no extra workflow outside your browser.

Install the extension

Add 321tube Video Downloader to your preferred desktop browser in one click.

Open 321tube

Navigate to a 321tube video page and start playing the content you want to save.

Choose a detected file

The extension lists available media sources. Select the quality you prefer.

Save locally

Click download and the MP4 file is written straight to your Downloads folder.

Features

Everything it does

Core capabilities included in the downloader experience.

Instant stream recognition
As soon as a 321tube video loads, the extension identifies downloadable media sources automatically.
Universal MP4 format
Saves all content as standard MP4 files playable on any device or media application.
Zero server interaction
Downloads are assembled entirely within your browser without routing data through external endpoints.
Resolution picker
When multiple quality options exist, you can choose the resolution that fits your needs.
Organized file output
Files are named with useful identifiers so your saved videos stay easy to find.
Live download feedback
See real-time speed and progress as each file is being saved to your computer.

Compatibility

Works where you work

Available on major desktop browsers and operating systems used in day-to-day workflows.

Browsers

ChromeEdgeFirefoxBraveOperaWhaleYandex

Operating Systems

WindowsmacOSLinux

Supported Content

Video streams hosted on 321tubeEmbedded player contentMultiple resolution variants

Not Supported

Safari and mobile browsersContent you cannot already accessBypassing site restrictions or account controls

Downloads

Choose your browser

Pick the browser build you need. When a direct GitHub release is available, you can grab the ZIP there.

Browser Extension

Desktop extension

Install 321tube Video Downloader for supported desktop browsers.

Get 321tube Video Downloader

We recommend using the ZIP version from the GitHub release when available. It lets us ship the most complete build, including features that browser stores do not always allow.

Product Tour

321tube Video Downloader Screenshots

See 321tube Video Downloader in action across supported browsers.

Happy Users

Recent customer feedback

Short, practical feedback from people using this downloader in real workflows.

Effortless video saving

The detection is fast and reliable. I just press play and the download option shows up immediately.

Marco Bellini

2026-02-12

Replaced my old workflow

Used to copy links into converter sites. This extension does everything in one step without leaving the page.

Suki Yamamoto

2026-03-05

Privacy-first approach

Knowing that nothing is uploaded to external servers makes me comfortable using it regularly.

Darren Holt

2026-01-20

FAQ

Frequently Asked Questions

After installing the extension, visit any 321tube video page and play the content. The extension will display available streams for you to download as MP4.