Who is MediaSniffer Plus for?

MediaSniffer Plus is a consumer product built for firefox users who download or inspect streaming media.

Does MediaSniffer Plus have a free plan?

Yes — MediaSniffer Plus is free to use.

What platforms does MediaSniffer Plus run on?

MediaSniffer Plus runs on the web and embeddable surfaces.

Is MediaSniffer Plus still active?

Unverified. MediaSniffer Plus has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to MediaSniffer Plus?

Similar projects tracked by PulseGate include Media Sniffer, Media Sniffer, and MediaSnag (Video Downloader).

Who develops MediaSniffer Plus?

MediaSniffer Plus is developed by Null Digital.

How long has MediaSniffer Plus been around?

MediaSniffer Plus first shipped in 2023.

Back to the index

MediaSniffer Plus

Name: MediaSniffer Plus
Author: Null Digital

mozilla.orgBrowser DevTools & extensions

MediaSniffer Plus is a Firefox browser extension that detects playlist and subtitle URLs across HLS, HDS, MPEG-DASH, and Smooth Streaming protocols. It supports direct media downloads, custom file extensions, Content-Type monitoring, and quick URL copying.

FreeWebEmbeddable

Visit mozilla.org

3alternatives

8features

2023since

Overview

8 features

In the Browser DevTools & extensions space, MediaSniffer Plus takes a focused approach. It focuses on finding playlist, subtitle, and media file URLs for downloading streaming content. It is built as a consumer product for firefox users who download or inspect streaming media. It is available for free. MediaSniffer Plus is available on the web and embeddable surfaces.

Behind MediaSniffer Plus is Null Digital, and it first shipped in 2023. Among its 8 catalogued features are Manifest Detection, Subtitle Detection, and Media Downloads. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Manifest Detection
Subtitle Detection
Media Downloads
Custom File Types
Content-Type Monitoring
URL Copying
Download History Access
Options Page

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed17 Sep · 15:32 UTC
The Stream Detector verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about MediaSniffer Plus

What does MediaSniffer Plus do?: MediaSniffer Plus focuses on finding playlist, subtitle, and media file URLs for downloading streaming content. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is MediaSniffer Plus for?: MediaSniffer Plus is a consumer product built for firefox users who download or inspect streaming media.
Does MediaSniffer Plus have a free plan?: Yes — MediaSniffer Plus is free to use.
What platforms does MediaSniffer Plus run on?: MediaSniffer Plus runs on the web and embeddable surfaces.
Is MediaSniffer Plus still active?: Unverified. MediaSniffer Plus has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to MediaSniffer Plus?: Similar projects tracked by PulseGate include Media Sniffer, Media Sniffer, and MediaSnag (Video Downloader).Media Sniffer Media Sniffer MediaSnag (Video Downloader)
Who develops MediaSniffer Plus?: MediaSniffer Plus is developed by Null Digital.
How long has MediaSniffer Plus been around?: MediaSniffer Plus first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who download or inspect streaming media
Model: B2C
Solves: Finding playlist, subtitle, and media file URLs for downloading streaming content.

Registered as

Firefox Add-ons: mediasniffer-plus

Developer

Null Digital

Index record

Indexed: 17 Sep 2026
Lifecycle: Alive
Last seen: 17 Sep 2026

Identity audit (13)

Slug: the-stream-detector-mozilla-org-1g9whv
Lifecycle state recorded: 17 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 17 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 17 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/mediasniffer-plus

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do