What does Media Speed Up do?

Media Speed Up focuses on adjusting audio and video playback speed in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Media Speed Up?

Media Speed Up is a consumer product built for firefox users who want to control media playback speed.

Is Media Speed Up free?

Yes — Media Speed Up is free to use.

What platforms does Media Speed Up run on?

Media Speed Up runs on the web and embeddable surfaces.

Is Media Speed Up still active?

Unverified. Media Speed Up 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 projects are similar to Media Speed Up?

Similar projects tracked by PulseGate include YouTube SpeedUp, Playback speed, and Faster Video.

Who makes Media Speed Up?

Media Speed Up is developed by Hamada Yoshihisa.

When did Media Speed Up launch?

Media Speed Up first shipped in 2020.

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Media Speed Up

Name: Media Speed Up
Author: Hamada Yoshihisa

mozilla.orgBrowser DevTools & extensions

Media Speed Up is a Firefox browser extension that changes the playback speed of audio and video media from 0.25x to 4x. It can be used on sites such as YouTube and is intended for individual Firefox users.

FreeWebEmbeddable

Visit mozilla.org

Overview

5 features

Media Speed Up is a Browser DevTools & extensions project. It focuses on adjusting audio and video playback speed in Firefox. Media Speed Up is a consumer product aimed at firefox users who want to control media playback speed. Media Speed Up costs nothing to use. Media Speed Up is available on the web and embeddable surfaces.

It is developed by Hamada Yoshihisa, and it first shipped in 2020. Among its 5 catalogued features are playback speed control, 0.25x to 4x speed, and audio support. The interface is available in 32 languages, including Czech, German, and Greek.

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

Playback speed control
0.25x to 4x speed
Audio support
Video support
YouTube support

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

Indexed8 Sept · 10:03 UTC
Media Speed Up verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Media Speed Up

What does Media Speed Up do?: Media Speed Up focuses on adjusting audio and video playback speed in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Media Speed Up?: Media Speed Up is a consumer product built for firefox users who want to control media playback speed.
Is Media Speed Up free?: Yes — Media Speed Up is free to use.
What platforms does Media Speed Up run on?: Media Speed Up runs on the web and embeddable surfaces.
Is Media Speed Up still active?: Unverified. Media Speed Up 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 projects are similar to Media Speed Up?: Similar projects tracked by PulseGate include YouTube SpeedUp, Playback speed, and Faster Video.YouTube SpeedUp Playback speed Faster Video
Who makes Media Speed Up?: Media Speed Up is developed by Hamada Yoshihisa.
When did Media Speed Up launch?: Media Speed Up first shipped in 2020.

At a glance

Pricing: Free
Platforms: Web
First seen: 8 Sept 2026
Built for: Firefox users who want to control media playback speed
Model: B2C
Solves: Adjusting audio and video playback speed in Firefox.

Registered as

Firefox Add-ons: media-speedup

Developer

Hamada Yoshihisa

Index record

Indexed: 8 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 8 Sept 2026

Identity audit (13)

Slug: media-speed-up-mozilla-org
Lifecycle state recorded: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
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: 8 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/media-speedup

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