You can add these tools to your browser in just a few steps: Best Firefox download manager? - Mozilla Support
A lightweight extension that uses a multi-threaded JavaScript engine to divide files into sections (currently supporting up to 5 simultaneous threads). 2. How to Install a Download Booster add download booster to firefox
This is one of the most comprehensive tools. It supports HTTP, HTTPS, FTP, and even BitTorrent protocols. It efficiently processes large files by splitting them into several parts. You can add these tools to your browser
The fastest way to boost speeds is by installing an extension directly from the Mozilla Add-ons Store. These tools often use multi-threading—breaking files into smaller pieces and downloading them simultaneously—to increase speed by up to 10x. How to Install a Download Booster This is
A "recommended" add-on that offers multi-threading, pausing, and resuming capabilities for remote files.
Frequently cited as the best mass downloader for Firefox, it allows you to download all links or images on a page with a single click and features a built-in accelerator.