Speeder focuses on controlling HTML5 video playback speed in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.

Speeder is an open-source project built for firefox users who watch HTML5 video.

Does Speeder have a free plan?

Yes — Speeder is open source under the Open Source license and free to use.

What platforms does Speeder run on?

Speeder runs on the web and embeddable surfaces.

Is Speeder still maintained?

Unverified. Speeder 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 Speeder?

Similar projects tracked by PulseGate include Video Speed Controller, Video Speed Controller (New), and HTML5 Speed Controller.

Speeder is developed by SoPat712.

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Speeder

Name: Speeder
Author: SoPat712

github.comBrowser DevTools & extensions

Speeder is an open-source Firefox WebExtension that controls the playback speed of HTML5 videos. It is intended for users who want to speed up, slow down, or adjust video playback in the browser.

Open SourceWebEmbeddable

Visit github.com

2alternatives

4features

2025since

Overview

4 features

In the Browser DevTools & extensions space, Speeder takes a focused approach. It focuses on controlling HTML5 video playback speed in Firefox. It is built as an open-source project for firefox users who watch HTML5 video. Speeder is open source under the Open Source license. It runs on the web and embeddable surfaces.

It is developed by SoPat712, and it first shipped in 2025. Among its 4 catalogued features are playback speed control, HTML5 video support, and firefox extension.

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

Playback speed control
HTML5 video support
Firefox extension
WebExtensions support

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed11 Sept · 19:37 UTC
Speeder verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Speeder

What is Speeder?: Speeder focuses on controlling HTML5 video playback speed in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Speeder for?: Speeder is an open-source project built for firefox users who watch HTML5 video.
Does Speeder have a free plan?: Yes — Speeder is open source under the Open Source license and free to use.
What platforms does Speeder run on?: Speeder runs on the web and embeddable surfaces.
Is Speeder still maintained?: Unverified. Speeder 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 Speeder?: Similar projects tracked by PulseGate include Video Speed Controller, Video Speed Controller (New), and HTML5 Speed Controller.Video Speed Controller Video Speed Controller (New)HTML5 Speed Controller
Who makes Speeder?: Speeder is developed by SoPat712.
How long has Speeder been around?: Speeder first shipped in 2025.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
Built for: Firefox users who watch HTML5 video
Model: Open source
Solves: Controlling HTML5 video playback speed in Firefox.

Registered as

Firefox Add-ons: speeder

Developer

SoPat712

Index record

Indexed: 11 Sept 2026
Lifecycle: Alive
Last seen: 11 Sept 2026

Identity audit (13)

Slug: speeder-github-com
Lifecycle state recorded: 11 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 11 Sept 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: Written by a language model from the project's public pages.
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: 11 Sept 2026
Canonical URL: https://github.com/SoPat712/Speeder

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