Firefox Video Downloader Extensions: 7 Options and Limits for 2026
Summary: Tested in June 2026 — here are the 7 best Firefox video downloader extensions ranked by Manifest V3 compatibility, max quality, and real-world performance, plus a desktop alternative for DRM-protected streams that browser add-ons simply cannot handle.
In short, a Firefox video downloader is useful only if it saves a playable file with sound and supports the site and Firefox version you use. A video downloader for Firefox is best suited to authorized clips; protected streaming services usually require an official offline feature or a supported desktop workflow.
This guide compares seven Firefox extensions by current package status, workflow, US availability, and free or paid boundaries, then explains how to save a playable file, troubleshoot common failures, and choose a desktop workflow for batch local files.
Downloading Videos in Firefox: What the Law Says
Using a free Firefox video downloader extension is convenient, but viewing access does not automatically include permission to download a video. The permitted use depends on the content, the platform's terms, applicable law, and what you intend to do with the saved file.
To keep things on the safe side:
- Use a downloader only with authorized access, and save only content you are authorized to download.
- Keep permitted downloads for personal offline viewing and do not redistribute, resell, or publicly share them.
- Follow applicable law and each site's terms, including those of YouTube, Twitch, and streaming services.
- Treat permission as use-case specific; a subscription, purchase, or ability to play a video does not by itself grant download rights.
Before installing an add-on, review its publisher, requested permissions, and privacy policy. Also, services like Netflix, Amazon Prime Video, and Disney+ use advanced DRM streaming techniques, which makes any Firefox browser addon hard to adapt to their content protection layers.
Firefox Video Downloads: Save a Playable File With Sound
A Firefox video download is complete only when the saved file plays normally and includes the expected audio. Use this workflow with videos you are authorized to download:
| Step | Action |
|---|---|
| 1 | Install the exact package from Mozilla Add-ons. |
| 2 | Confirm that your Firefox release meets the add-on's requirements. |
| 3 | Start playing the authorized video on its original page. |
| 4 | Open the extension's detection menu after playback begins. |
| 5 | Select an available format and quality that includes audio. |
| 6 | Save the completed file, then confirm playback and sound. |
A playlist, manifest, page link, or media fragment is not the same as a completed video file. Renaming its extension to .MP4 does not convert or combine the underlying media; converting a video link to MP4 requires a workflow that retrieves and processes the actual media.
I would judge a video downloader for Firefox by three practical results: whether it detects the authorized video, whether it saves a playable file with sound, and whether its current package supports your Firefox version.
7 Firefox Video Downloader Extensions: Current Options and Status
The seven entries below are an inventory of current options, regional limitations, and maintenance status rather than seven equal recommendations. This table highlights three active choices with clearly defined workflows; the other four remain in the article as regional or older-package notes.
| Extension | Version | Workflow | External software | Free/premium terms |
|---|---|---|---|---|
| Video DownloadHelper | 10.6.1.2 | Multi-site detection | None required | Free tier; $19/year or $39 lifetime |
| Free Download Manager extension | 3.3.2 | Sends links to FDM | FDM desktop app | Free |
| Easy YouTube Video Downloader Express | 25.3 | YouTube page controls | Browser extension | Pro contribution; 1080p/MP3 offering |
As of October 2026. Video DownloadHelper requires Firefox 140 or later. Pricing and plan references: DownloadHelper Premium, Free Download Manager homepage, and VideoDroid Pro upgrade page, October 2026.
1. Video DownloadHelper
Video DownloadHelper is a multi-site Firefox extension for detecting downloadable media on supported pages. Its current Firefox package is version 10.6.1.2, updated October 8, 2026, and it requires Firefox 140 or later. The current release is designed to work without external software.
Detection and available outputs can still differ by site and media source. The latest Video DownloadHelper review explains its workflow and practical limitations in more detail.
- Detects downloadable media across multiple supported sites
- Current release does not require external software
- Offers a free tier for supported download tasks
- Version 10.6.1.2 requires Firefox 140 or later
- Detection and available formats depend on the media source
- Video DownloadHelper Premium is $19 per year or $39 lifetime
2. Video Downloader Professional
Video Downloader Professional provides a straightforward toolbar menu that lists detected videos and their available resolutions. You can also save items to a personal list for later. Its public Firefox package is version 2.0.15 and was last updated on June 25, 2024, so it is better treated as an older maintained listing than as a current default recommendation. For authorized creator downloads, switch to an actively updated extension if this package does not detect the media.
- Lists detected videos and available resolutions in the toolbar
- Saves detected items to a personal list for later use
- Version 2.0.15 was last updated on June 25, 2024
- Detection and site support may be limited on current pages
3. SaveFrom.net Helper
SaveFrom ended its US service on April 28, 2020. The separately maintained helper package continues to receive updates for other markets, but that does not make the service available to US users.
For readers in the United States, an actively maintained Firefox extension or the content provider's authorized download option is the more practical route.
- Adds a download control on supported pages outside the U.S.
- No companion app required
- The separate helper package continues to receive global updates
- SaveFrom ended its U.S. service on April 28, 2020
- Audio and video download separately; manual merging needed
- Not recommended for U.S. users
4. Download Video and Flash
Download Video and Flash still has a public Firefox listing, but its latest update was May 22, 2020. That age makes it a legacy option rather than a current recommendation. If you need to save media you are authorized to download, choose an actively maintained extension or the site's official download feature.
- Detects media and image sources on legacy pages
- Offers both built-in and external download managers, including IDM or GNU Wget
- Still has a public Firefox listing
- Last updated on May 22, 2020
- Sometimes misses segmented streams
- No features like format conversion or MP3 export
The package remains listed, but its May 2020 update date makes current-site compatibility uncertain.
5. Free Download Manager Extension
If you already use Free Download Manager on your PC, its Firefox extension lets you send media links straight into FDM. The current Firefox extension is version 3.3.2, updated July 21, 2026. Then you can use FDM's full power: batch downloads, bandwidth limits, and pause/resume. So, rather than calling it a video download plugin for Firefox, it is more accurately a desktop download manager with a Firefox extension front-end.
For adults saving content they are authorized to access through a direct media link, the desktop handoff can also fit workflows such as saving OnlyFans videos on Firefox.
- Supports batch downloads, pauses/resumes, and bandwidth limits
- Compatible with different types of proxy servers
- Offers a convenient Snail Mode for slow downloading
- Firefox extension version 3.3.2 was updated July 21, 2026
- Not suitable for beginners
- Requires installing external desktop software
- Bugs appear sometimes during the downloading process
- Poor resource sniffing for video sites; needs a direct link to work reliably
6. Easy YouTube Video Downloader Express
Easy YouTube Video Downloader Express is exactly what the name implies: a straightforward YouTube downloader integrated directly into the YouTube page UI. It adds a "Download As" button below the player. Version 25.3 release notes add 4K and 1440p options and a fix for preserving original audio in dubbed videos. Its contribution-based Pro page separately offers 1080p and MP3, without defining a fixed free-tier maximum. This remains a YouTube-focused YouTube video downloader extension for Firefox and Chrome, rather than a general multi-site downloader.
- Integrates download controls into the YouTube page
- Version 25.3 release notes add 4K and 1440p options
- Includes a release-note fix for original audio in dubbed videos
- The contribution-based Pro page offers 1080p and MP3
- Does not support other sites like Vimeo or Facebook
7. YouTube Video Downloader HD, 4K & Multi-Format
The Firefox package behind this listing is online-YouTube-videodownloader version 1.2, updated January 17, 2026. It is not a self-contained downloader in the traditional sense: clicking its extension button redirects you to the linked YT Video Saver web workflow.
- The linked workflow offers MP4 and MP3 output choices
- Easy to use with a simple interface
- Redirects to the separate YT Video Saver web workflow
- Does not operate as a self-contained media detector
- Does not detect region-locked or age-restricted videos
When Firefox Extensions Hit Their Limits: Common Download Problems
Firefox download failures are not caused by a universal switch from Manifest V2 to Manifest V3. Firefox continues to support Manifest V2 alongside Manifest V3 and supports both blockingWebRequest and declarativeNetRequest.
What this means practically:
- No media detected: start the authorized video, let it play briefly, and reopen the extension's detection menu.
- Interrupted transfer or outdated package: retry the permitted transfer and match the current add-on version to its minimum Firefox requirement.
- Unsupported site or premium prompt: check the tool's current scope, or use an authorized official download option where available.
- Silent output: select an available format that includes audio, then confirm playback and sound after saving.
An add-on's current package, minimum Firefox version, maintenance status, and site support are more useful indicators than an MV2 or MV3 badge alone. A desktop workflow becomes relevant when a one-off browser download no longer fits the task, especially for a batch local-file library.
StreamFab: A Desktop Workflow for MP4 and MKV
A desktop workflow is useful when the task involves a batch queue or a managed local-file library rather than a single authorized clip. StreamFab All-In-One uses its own built-in browser, so its workflow begins inside the desktop application instead of an extension detection menu.
- Start with a valid subscription or other authorized access to the content.
- Use Windows or macOS and check the selected service and setup during the 30-day trial.
- Choose MP4 or MKV, then select the available audio and subtitle options before adding items to the queue.
StreamFab All-In-One runs outside Firefox and uses its own built-in browser to create MP4 or MKV files on supported services. Support and output quality depend on the source, service, subscription plan, operating system, and selected format; the 30-day trial provides a practical route for checking a specific service and setup before purchase.
- Support for 1,000+ websites, including YouTube, Facebook, Twitter/X, TikTok, and many more
- Local-file workflows for supported streaming services when you have an active subscription and permission to save the content
- Output up to 8K in MP4 or MKV, with Dolby Atmos, EAC3 5.1, AC3 5.1, or AAC 2.0 where supported by the source, service, plan, operating system, and player
- Batch downloads with scheduling and automatic next-episode detection
- Subtitle downloads and metadata saving for use in Plex or other media managers
For a one-off authorized clip, a Firefox extension remains the lighter option. StreamFab All-In-One is better suited to organizing a whole season or long playlist as a batch local-file library, without relying on an extension's detection menu. If a supported site changes its playback system, install the current StreamFab update or use the official troubleshooting guidance for that service.
Use the workflow only with authorized access and for content you are authorized to download. Keep saved files for personal offline viewing, do not redistribute them, and follow applicable law and the platform's terms; permission depends on the specific content and use case.
Tap the VIP Services or the YouTube icon on the left channel to find the streaming website you want. You can also copy and paste your video URL directly into the address bar on the Homepage.
The built-in browser of this tool will detect the video and show it in search results. Once you see the video, play it. A window will open on the screen; customize the output profile with quality, format, subtitles, and
Select the "Download Now" option to proceed with offline saving. Or choose "Add to Queue" to download the videos in later spare time.
Firefox Video Downloader Extensions vs. StreamFab: Head-to-Head
Firefox extensions detect available media during browser playback, while StreamFab All-In-One uses its own built-in browser for a desktop MP4 or MKV workflow. The practical choice depends on whether you need one authorized clip or a managed batch library.
| Dimension | Firefox extension workflow | StreamFab desktop workflow |
|---|---|---|
| Where it runs | Firefox; some tools connect to desktop software | Windows or macOS desktop application |
| Typical task | One authorized clip or direct media link | Authorized batch queue and local-file library |
| Output | Available media formats and audio tracks | MP4 or MKV on supported services |
| Quality | Source and selected output | Source, service, plan, and operating system |
| Protection | HLS/DASH support is separate from DRM | Service-specific support; authorized use only |
StreamFab's general website coverage is not a count of DRM-protected services. HLS and DASH are streaming formats that supported Firefox extensions also handle; DRM protection is a separate layer. StreamFab offers MP4 and MKV local-file workflows on supported services.
Choose an extension for a one-off authorized clip, Free Download Manager integration for managed direct-link transfers, or StreamFab All-In-One when the task calls for a batch local-file library.
Firefox Video Downloader FAQ for 2026
Do Firefox video downloader extensions need Manifest V3?
No. Firefox continues to support Manifest V2 alongside Manifest V3, including both blockingWebRequest and declarativeNetRequest. Manifest version alone does not determine whether a downloader works; check the current package, its minimum Firefox requirement, maintenance status, and support for the site. For example, Video DownloadHelper 10.6.1.2 requires Firefox 140 or later.
Why does my Firefox video downloader extension need a companion app?
External software is not required by every Firefox video downloader extension. The current Video DownloadHelper release is designed to work without a companion app, while the Free Download Manager extension sends links to the installed FDM desktop application. Older workflows may use companion software to merge separate audio and video tracks or convert formats, so the requirement depends on the specific extension and version.
Can Firefox download DRM-protected video from streaming services?
Typical Firefox extensions cannot save DRM-protected video from Netflix, Prime Video, or Disney+. HLS and DASH are streaming formats, while DRM is a separate access-control layer. Use the service's official offline feature when available. Do not use tools that claim to circumvent access controls, since doing so can violate platform terms and may be unlawful. Claims of unlimited retention or guaranteed permanent access are also misleading because service access, licensing, and playback conditions can change. For content you are authorized to access, StreamFab All-In-One provides a desktop local-file workflow on supported services using recording technology rather than altering platform access controls. This requires a valid subscription and is intended for personal offline use where permitted by the platform's terms and applicable law.
What is the best free video downloader for Firefox in 2026?
Video DownloadHelper is a practical multi-site option, and its current release is designed to work without external software. Free Download Manager is better suited to users who want free desktop integration for managed transfers, but it requires the FDM application. Easy YouTube Video Downloader Express is the more focused choice for YouTube page controls, with 1080p and MP3 offered through its Pro option. Choose based on the site and workflow rather than a Manifest V3 badge alone.
Is it legal to download videos using Firefox extensions?
Viewing access and permission to download are separate. Use an extension only with authorized access, save only content you are authorized to download, do not redistribute the resulting files, and follow applicable law and the platform's terms. Permission depends on the specific content and intended use, so a paid subscription or personal-use purpose does not by itself grant download rights.
Does private browsing make a Firefox video downloader safer?
No. A private window does not change an extension's permissions or create a security sandbox. Firefox controls private-browsing access separately, so review the extension publisher, requested permissions, update history, and privacy policy before allowing it to run in private Windows.
Conclusion
No single Firefox video downloader fits every task. For a one-off authorized clip or direct media link, a maintained extension is usually the quickest route. If you need a batch queue and an organized MP4 or MKV local library on supported services, StreamFab All-In-One provides a desktop workflow for Windows and macOS.
My practical rule is to match the tool to the job: use an extension when browser detection produces a playable file with sound, and consider the desktop workflow when batch handling, subtitles, audio-track selection, or metadata matters. This keeps the choice focused on the output you need rather than unsupported claims about Manifest V3 or universal site compatibility.
Save Authorized Videos for Personal Offline Viewing
StreamFab All-In-One provides MP4 and MKV local-file workflows on supported services for content you are authorized to access.
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