You would think that since both apps live under the same Meta roof, you could send a Facebook Reel to Threads with one tap. You cannot. There is no cross-post button on Facebook videos pointing at Threads, and no upload-from-Facebook button inside Threads either. The two apps share a parent company but not a workflow.
So if you find a Facebook Reel you want to drop into Threads, whether it is a clip from a creator you follow, an old video from your own Facebook page, or anything in between, the only reliable path is to download the file and re-upload it. That sounds clunky but it actually takes about thirty seconds with a free tool. We use FSaver for this. Below is the full flow.
Meta has reasons for keeping the two apps separate. Threads is built on top of Instagram identity, which is a separate graph from Facebook's social graph. Threads videos default to vertical with a short length cap. Facebook Reels are vertical too but Facebook videos in general can be much longer and any aspect ratio. The two formats overlap but do not match.
The practical result: even if Meta added a cross-post button tomorrow, you would still have to trim and reframe most clips. So we end up doing it manually anyway. The good news is that Threads accepts MP4 uploads natively, which means once you have the file you are done.
Facebook keeps videos inside the app for engagement and ad impressions. The Save option in the menu only bookmarks the video to your account. There is no offline file, no re-share button, no way to play it in a different app. If the original creator deletes the post a week later, your saved version goes with it.
Stories are worse. They auto-expire after twenty-four hours. If you want to keep a Story, you have one day to pull the file before it disappears for good.
A real downloader fetches the source MP4 before Facebook's CDN expires the URL. That is what FSaver does.
What it cannot do: private profiles, group-only posts, anything from accounts that have restricted you, or videos uploaded as SD in the first place. Downloaders cannot upscale.
On desktop, right-click the video or open the three-dot menu and pick Copy link. On mobile, tap the share icon below the post and select Copy link. For Reels, tap the paper-plane icon and use Copy link from there.
If you copied something and it does not work, double-check that the URL points to the post itself and not to the user's profile. The Facebook share button sometimes copies the wrong thing.
Open FSaver in any browser. There is a single input field on the page. Paste the link and hit the button. FSaver pulls the available quality options in a couple of seconds.
You will usually see options for 1080p, 720p, and sometimes 480p or 360p. Pick the highest one for cross-posting. Threads recompresses on upload so you want the most headroom going in. The file saves as a clean MP4 with the original audio and no watermark.
Threads accepts MP4 uploads directly. Open the Threads app or web, start a new post, attach the file. A few things to watch:
There are a lot of video downloader sites floating around. Most of them stuff the page with ads, require you to sign up, watermark the output, or break every other week. FSaver is the one we use ourselves because it does the simple thing reliably: paste, pick quality, download.
If you cross-post between Facebook and Threads even occasionally, Facebook video download in HD without signup is what you want, and FSaver is the cleanest free option we have found.
Want to download Facebook videos in HD (Reels and Stories too)? It is free, no signup needed.
Browser extensions. They get pulled from the Chrome Web Store every time Facebook updates its markup. Half the ones listed today will not work next month.
Generic multi-platform downloaders. They support twenty sites poorly instead of one site well. Facebook updates its CDN format often enough that generic tools break.
Screen recording. Caps at screen resolution, captures the UI around the video, drops frames on longer clips, and the audio sync is hit or miss.
A site that focuses on one platform and keeps up with that platform's changes tends to outperform anything generic. That is the whole pitch for FSaver.
"This video cannot be downloaded." The post is private, in a closed group, or geo-restricted in your region. There is no workaround for these.
No HD option in the list. The creator uploaded the video in SD. Downloaders cannot upscale a video that does not have higher quality available.
iOS Safari saved the wrong file. Long-press the quality button and pick Download Linked File instead of just tapping it. Safari sometimes tries to play the video in the browser instead of saving it.
Threads has the same problem Facebook does. No download button, no easy way to save offline. We built Threadster specifically for that. If you ever want to grab a video from Threads instead of Facebook, our Threads video download tool works the same way: paste, pick quality, save. You can also see our main guide for saving Threads videos for the full walkthrough.
The Facebook to Threads cross-post is a workflow that should have a button and does not. FSaver patches the gap. Three steps, no signup, MP4 in hand. If you cross-post once in a while it is a saved bookmark away. If you do it often, it just becomes muscle memory.
Got a Facebook Reel you want to drop into Threads? Download Facebook videos in HD for free.
Ready to download a Threads video? Paste the link below and hit Download. It takes a few seconds.
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