Both a standalone downloader website and a browser extension can get you the same end result — a saved Facebook video — but the way they get there, and what they ask of your browser along the way, are genuinely different. Here's the practical comparison.
How a Browser Extension Works
An extension installs permanently into your browser and typically requests permission to read and modify content on every website you visit, not just Facebook. That broad access is often technically necessary for the extension to detect video links automatically, but it also means the extension is always running, always has that level of access, and keeps working (and updating) in the background whether you're actively downloading something or not.
How a Website Downloader Works
A tool like FacebookReelDown runs only when you have the tab open. There's nothing added to your browser permanently — no icon in your extensions bar, no standing permission to read other sites you visit, no background process. When you close the tab, the tool stops running entirely, and reopening it later starts fresh.
Side-by-Side
| Website Downloader | Browser Extension | |
|---|---|---|
| Installation | None | Required |
| Access to other sites | None | Often broad |
| Runs in background | No | Frequently yes |
| Works across devices | Same on any browser/device | Needs separate install per browser |
| Update maintenance | None needed by you | Extension must stay updated |
| Uninstall process | Close the tab | Manually remove from browser |
When an Extension Might Make Sense
If you're downloading dozens of videos a day and want a one-click button embedded directly on the Facebook page itself, an extension's convenience can outweigh the broader permissions it asks for — that's a legitimate trade-off for heavy, repeat use. For occasional or moderate use, though, the standing access an extension holds is a lot to grant for something a plain webpage does just as fast.
Using FacebookReelDown Instead
- Open FacebookReelDown — no install step at all.
- Copy the video or Reel's share link from Facebook.
- Paste it into the input box and tap Get Video.
- Choose a quality and download.
The whole flow takes about as long as an extension's one-click button, minus the permanent install and standing permissions.
A Note on Other Platforms
The same trade-off shows up on Instagram too — Instagram-specific browser extensions exist with similarly broad permissions, while a purpose-built site avoids the install entirely; InstaDown Pro applies the same website-only approach to Instagram Reels and videos that FacebookReelDown uses for Facebook.
Bottom Line
Neither approach is unsafe by default, but a website-based downloader asks for meaningfully less access to get the same job done. For most people downloading Facebook videos occasionally, that's the simpler and lower-commitment choice.
If a browser extension route still appeals to you specifically for Chrome, see the Facebook video downloader Chrome extension breakdown for what that actually involves.
If safety is the deciding factor either way, see the safest Facebook video downloader for a closer look at what that actually means.
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