Ultimate Video Enhancer

Available on Firefox · Chrome coming soon

Professional video control for every website

Speed up lectures, boost quiet audio, find subtitles, and save presets — one extension for YouTube, Udemy, Coursera, and any HTML5 player.

  • 0.1x – 16x speed
  • Up to 6x volume
  • Per-site presets
Ultimate Video EnhancerProfessional video experience
ACTIVE ON THIS PAGE youtube.com Video detected Enhancements enabled
Video Controls2.00x
Playback speed2.00
A slower · D faster · S reset
Audio Controls 3.5x

Get notified when Chrome launches

UVE for Chrome is almost ready. Leave your email and we will send you the store link.

Verified on Mozilla

New on Firefox. Built transparently.

Live product facts come from the official Mozilla Add-ons listing — never from invented counters or placeholder reviews.

Distribution Available on Firefox Add-ons

Public listing with a Mozilla-hosted download.

Current release Version 1.1.0

Release information verified against AMO.

Required data collection None declared

Core playback controls stay in your browser.

View the official listing Be the first to leave an honest review

Built for how you watch

One extension, three audiences that save hours every week.

Students & courses

Watch Udemy and Coursera at 1.5x–2x. Save a "Lectures" template and per-site presets.

UVE for online courses

Drag to compare

From limited player to precise control.

Explore how UVE changes speed, audio, and subtitle workflows. The comparison works with mouse, touch, and keyboard.

Speed comparison: standard player versus UVE precision controls.

Everything you need in one extension

Volume boost

Web Audio amplification up to 6x — fix quiet laptop speakers without external tools.

Explore volume boost

Templates

Save up to 5 speed/volume combos — switch between "Lectures" and "Movies" in one click.

Per-site memory

YouTube at 1.5x, Udemy at 2x — each domain remembers your preference automatically.

YouTube extras

Restore dislike counts and use the in-page speed bubble on any video.

See it in action

A modern popup — speed, volume, templates, and subtitles in one place.

Speed control with fine steps and presets
Volume boost for quiet course videos
Subtitles for learning and accessibility
Activate Pro and customize your setup

UVE vs Video Speed Controller

The most popular speed extension — and what UVE adds on top.

Feature Video Speed Controller UVE
Speed controlYes✓ 0.1x – 16x
Volume boostNo✓ Up to 6x
Subtitle searchNo✓ YouTube + OpenSubtitles
Saved templatesLimited✓ 5 named presets
Per-site settingsPer URL✓ Per domain + global sync
YouTube dislikesNo✓ Included
Modern UIBasic✓ Dark/light glass design

Feature sets can change between extension versions. Review each current store listing before choosing.

Read the full, criteria-based comparison

Simple pricing

Free up to 3x speed and 2x volume. Upgrade once for lifetime Pro.

Launch offer

Pro Lifetime

€24.99 one-time

  • Full 16x speed
  • 6x volume boost
  • 5 templates
  • OpenSubtitles search
  • Subtitle file upload
  • Performance monitor
Buy Pro — €24.99

Lifetime license · One-time payment · Refund via Lemon Squeezy

Pro Student

€17 one-time

  • Everything in Pro
  • 30% student discount
  • Perfect for Udemy & Coursera
Student — €17

Quick answers

Common questions

Explore all 14 answers
01PricingIs UVE really free to start?

Yes — 3x speed, 2x volume, and core features are free forever. Pro unlocks power-user tools.

02BrowsersWhen is Chrome available?

Chrome Web Store listing is coming soon. Join the waitlist above.

03Pro licenseHow do I activate after purchase?

Your license key arrives by email. Follow our step-by-step activation guide.

Ready to enhance your videos?

Install UVE on Firefox today. Chrome Web Store listing coming soon.

Firefox Add-ons Chrome Web Store