How to Download Videos in Firefox as MP4 Free

Firefox users have a love-hate relationship with video downloader add-ons: they work for a month, then Mozilla pulls them or the platform changes something and they die. Skip the cycle. xi runs as a plain website inside Firefox — desktop, Android, even Private Browsing — and hands you the MP4 with no add-on to babysit.

Download in 4 steps in Firefox

1. Copy the video link. On desktop, click the address bar (or press Ctrl+L then Ctrl+C) on the video page. On Firefox for Android, tap the address bar, then the copy icon. In apps like TikTok or Instagram, use Share, then Copy Link.
2. Open a new tab with apiproai.com. Press Ctrl+T on desktop or tap the tab counter and the plus icon on Android. Type apiproai.com and go. No add-on, no permissions, no restart.
3. Paste the link into xi and download. Paste with Ctrl+V (or long-press, Paste on Android) and hit the download button. xi resolves the video and offers MP4 options. Click the one you want — Firefox's own download manager takes over from here.
4. Find your MP4. On desktop, click the download arrow in the toolbar to open the file or reveal it in the folder. On Android, pull down the notification shade or open the Download folder in your file manager. The file plays in any video player.

Desktop Firefox: the power-user setup

Firefox on desktop is arguably the best browser for this workflow because its download manager is honest and its container tabs keep things tidy. One genuinely useful trick: open apiproai.com in a pinned tab (right-click the tab, Pin Tab). It shrinks to a favicon on the left and survives restarts, so your downloader is always one click away — the convenience of an add-on button with none of the risk. Keyboard people can do the whole loop without the mouse: Ctrl+L, Ctrl+C on the video page, Ctrl+T, type the first letters of apiproai.com, Enter, Ctrl+V, Enter.

Firefox's Enhanced Tracking Protection deserves a mention because it scares people unnecessarily. The shield icon may show trackers blocked on video sites, but xi does not depend on third-party cookies, fingerprinting scripts or cross-site requests to do its job — you paste a link, the server resolves it. Strict mode will not break downloads. The one Firefox-specific quirk to know: if you set downloads to "Open with" a player instead of saving, large files may stream instead of saving. Keep the default "Save files to" behavior for video downloads, and use the Library (Ctrl+J) to retry a failed download without re-pasting the link.

Firefox on Android: the underrated downloader phone

Firefox for Android is a sleeper pick for mobile downloading because, unlike Chrome on Android, it gives you a real download list and does not hide files. The flow mirrors desktop: copy the link from the source app, open apiproai.com in Firefox, paste, download. Android will show a system notification with progress, and the finished MP4 sits in the Download folder, visible to gallery apps and editors like CapCut immediately — no "Save to Files" dance like on iPhone.

Two Android-specific notes. First, if your phone is aggressive about battery saving (Xiaomi, Huawei and Samsung all do this), exclude Firefox from battery optimization or long downloads may pause when the screen sleeps. Second, Firefox for Android supports opening apiproai.com in a private tab just as well; the download still lands in the shared Download folder, which surprises people who expect private mode to hide the file. Private mode hides history, not downloads — the MP4 is a real file on your storage either way. For batch sessions, Firefox's tab queue and readable download list make it easier than most mobile browsers to work through a dozen links.

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