Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Kapto

Kapto by Zylio

Send any video, audio or file from your browser to the Kapto desktop app — pick a quality, download in one click.

0 (0 reviews)0 (0 reviews)
1 User1 User
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Pick a quality, see its size, and download in one clickA Download button on every video, never over the site's controlsEverything in one list, grouped by what needs youEvery connection, liveChoose the quality, subtitles and folder before it starts
About this extension
Kapto connects your browser to the Kapto desktop
application, a fast multi-connection download manager.

WHAT IT DOES
• Pick a quality and download — the popup lists every resolution the page offers
with its file size, so you choose before anything starts.
• One-click send — a Download button sits on the edge of the video player (never over
the site's own controls); click it, pick a quality, and the file is handed to the
Kapto app.
• Right-click any link, video, or audio and choose "Download with Kapto".
• See what the app is doing — the popup shows the downloads in progress, with speed,
without switching windows.
• Take over browser downloads, or don't — one switch in the popup. Per-site rules,
file-type and size filters decide the rest.
• Automatic pairing — the extension finds the desktop app on your own computer with no
ports or tokens to enter.
• Faster downloads — the desktop app splits each download into multiple connections and
supports pause, resume, and a download queue.

HOW IT WORKS
The extension detects downloadable content on the page and passes the link (plus the
information needed for the download to succeed) to the Kapto app running
locally on your computer at 127.0.0.1. Nothing is sent to any external server.

REQUIREMENTS
The free Kapto desktop application must be installed and running. Get it from
https://zylio.net/software/kapto

PRIVACY
The extension does not collect, store, or transmit any personal data to the developer
or any third party. Everything stays on your own machine. See the privacy policy for
details.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Download files and read and modify the browser’s download history
  • Display notifications to you
  • Access browser tabs
  • Access your data for all websites

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
  • Copy add-on ID
Version
1.14.0
Size
85.34 KB
Last updated
2 days ago (Sep 26, 2026)
Related Categories
  • Download Management
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • download
  • mp3
  • streaming
  • video downloader
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.