Do I need to install anything to download Facebook videos?
No — a browser page can do the whole job, and that is the simplest safe answer. Downloading a public Facebook video requires only the video's URL and a service that resolves it to a file; the browser you already have handles the rest. FB DownS works this way: open the site, paste the link, save the file. Nothing is installed, no account is created, and nothing remains on your device afterwards except the video.
This matters most on locked-down machines. On a Chromebook, a work laptop with extensions disabled, or an iPhone where installing is a whole decision, the no-install route is the only route that works everywhere. It is also the route that ages best: there is no component sitting in your browser months later, still holding permissions you forgot you granted.
Are there browser extensions that help download Facebook videos?
Yes, several exist, and their appeal is legitimate — a download button that appears on the video while you scroll is the fastest workflow available. If you download videos many times a day on a desktop, an extension genuinely saves you real time, and it is fair to say so. This page is not an argument that extensions are bad software.
The problem is the permission model rather than the idea. To place a button inside Facebook's page, an extension asks to read and change your data on the sites you visit — frequently on all sites, not just facebook.com. Once granted, that access is silent and open-ended: it can read page content, including pages that have nothing to do with video. You are trusting the publisher continuously, not just at install.
Why FB DownS does not publish a browser extension
We do not ship an extension because we would have to request permissions we do not need to do the job. A useful download button inside Facebook means broad host access, and broad host access means we could read far more than a video URL. We would rather not hold that ability at all than ask you to trust that we will not use it.
There is a second reason: extensions outlive the intentions of whoever built them. Extension businesses get sold, and the permissions you approved for the original developer transfer to the buyer without you being asked again. Documented cases exist of previously clean extensions being acquired and updated to inject ads or track browsing. A website cannot do that — close the tab and its access ends with the tab.
Is a dedicated app better than a web-based service?
For most people, no — the app is faster to trigger but asks for more, and the result is the same file. A share-sheet entry does beat copy-paste, so if you save videos every day on a phone, that convenience is worth weighing. But a mobile downloader typically wants storage access, often clipboard access, and sometimes accessibility permissions that let it observe everything you do on the device.
There is also a stability question. Facebook-downloader apps are pulled from the Play Store and App Store regularly for policy violations, so a workflow built on one can break without warning. A website has no store to be removed from. Whichever you pick, the disqualifying signal is identical: an app or site that asks you to sign into Facebook is not one to use.
How do I safely use a downloader on multiple devices?
Use one browser-based tool everywhere rather than installing a different component on each device. An extension covers only desktop, an app covers only that phone, and keeping both means maintaining two pieces of software with two permission sets. A single site works on all of them and needs no syncing, no account and no cross-device state.
If you do install an extension, apply a short discipline: install from the official store only, read the permission prompt rather than clicking through it, prefer one scoped to facebook.com instead of all sites, and audit your extension list every few months. Anything you no longer use should be removed, not left disabled — a disabled extension can still be updated by its owner.
What can a browser tool not do?
A browser tool cannot batch, queue, schedule, or reach anything private — and it is better to know that up front. FB DownS handles one video at a time. There is no bulk mode, no cloud storage, no scheduling, no monitoring of a page for new posts, and no API to plug into other software. If your workload genuinely needs those, desktop software is the honest recommendation, not us.
It also cannot exceed what Facebook serves. The maximum you get is the best merged file Facebook offers for that video, which in practice is usually 720p HD rather than true 1080p or 4K, because the highest-resolution stream is often delivered separately from the audio. And no third-party tool of any kind — website, extension, app or desktop — can download a private or friends-only video.