Is Multiple File Downloader safe?

Low risk

Multiple File Downloader lets any HTTP(S) page start downloads with page-chosen URLs and filenames.

The extension injects a content script into every HTTP and HTTPS page and watches for specific marker elements in the page DOM. When a page adds those elements, the extension forwards the page-provided URL, filename, and optional path to its background script, which calls the browser downloads API without checking the page origin.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

MSI Developersv1.5.1resigned1Firefox Add-ons
19Risk
Who publishes it

MSI Developers - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.5.1resigned1. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Start, monitor and manage your downloads

    downloads

  • Store data in your browser

    storage

  • See the address and title of every tab you have open

    tabs

Updated 2 November 2026amo-492002