What is Stream Sniffer?

Finding, copying, and downloading streaming media URLs and subtitles from websites. It is catalogued under Downloaders & offline video on PulseGate.

Who is Stream Sniffer for?

Stream Sniffer is a consumer product built for firefox users who need to inspect or download streaming media.

Does Stream Sniffer have a free plan?

Yes — Stream Sniffer is free to use.

What platforms does Stream Sniffer run on?

Stream Sniffer runs on the web, embeddable surfaces, Windows, macOS, and Linux.

Is Stream Sniffer still active?

Unverified. Stream Sniffer 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 Stream Sniffer?

Similar projects tracked by PulseGate include Media URL Sniffer, Stream Detector Pro, and Stream.

Who develops Stream Sniffer?

Stream Sniffer is developed by Andi.

How long has Stream Sniffer been around?

Stream Sniffer first shipped in 2024.

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Stream Sniffer

Name: Stream Sniffer
Author: Andi

mozilla.orgDownloaders & offline video

Stream Sniffer is a Firefox browser extension that detects streaming URLs and subtitles across Apple HLS and MPEG-DASH protocols. It can copy URLs, download video and audio files, monitor custom file types, and provide configurable options.

FreeWebEmbeddableWindowsmacOSLinux

Visit mozilla.org

Overview

7 features

Stream Sniffer sits in PulseGate's Downloaders & offline video category. Finding, copying, and downloading streaming media URLs and subtitles from websites. Stream Sniffer is a consumer product aimed at firefox users who need to inspect or download streaming media. Stream Sniffer is free to use. Stream Sniffer is available on the web, embeddable surfaces, Windows, macOS, and Linux.

Behind Stream Sniffer is Andi, and it first shipped in 2024. Key capabilities include HLS detection, MPEG-DASH detection, and subtitle detection. The interface is available in 32 languages, including Czech, German, and Greek.

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

HLS detection
MPEG-DASH detection
Subtitle detection
Media downloads
Custom file monitoring
URL copying
Options page

Built with & integrations

Runs on

BrowserEmbeddableWindowsmacOSLinux

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed14 Sep · 07:45 UTC
__MSG_extensionName__ verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Stream Sniffer

What is Stream Sniffer?: Finding, copying, and downloading streaming media URLs and subtitles from websites. It is catalogued under Downloaders & offline video on PulseGate.
Who is Stream Sniffer for?: Stream Sniffer is a consumer product built for firefox users who need to inspect or download streaming media.
Does Stream Sniffer have a free plan?: Yes — Stream Sniffer is free to use.
What platforms does Stream Sniffer run on?: Stream Sniffer runs on the web, embeddable surfaces, Windows, macOS, and Linux.
Is Stream Sniffer still active?: Unverified. Stream Sniffer 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 Stream Sniffer?: Similar projects tracked by PulseGate include Media URL Sniffer, Stream Detector Pro, and Stream.Media URL Sniffer Stream Detector Pro Stream
Who develops Stream Sniffer?: Stream Sniffer is developed by Andi.
How long has Stream Sniffer been around?: Stream Sniffer first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who need to inspect or download streaming media
Model: B2C
Solves: Finding, copying, and downloading streaming media URLs and subtitles from websites.

Registered as

Firefox Add-ons: stream-sniffer

Developer

Andi

Index record

Indexed: 14 Sep 2026
Lifecycle: Alive
Last seen: 14 Sep 2026

Identity audit (13)

Slug: msg-extensionname-mozilla-org-12916f
Lifecycle state recorded: 14 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 14 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: 14 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/stream-sniffer

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