Pace each lecture
Use 1.25x–2x for reviews and drop below 1x when diagrams, proofs, or demos need closer attention.
Speed controllerBuilt for lectures and online courses
Finish long lectures without losing focus.
UVE gives students precise playback speed, quieter-audio boost, captions where available, and remembered settings for the sites you study on.
- Fine speed steps
- Lecture templates
- Student Pro discount
Lecture template1.75x
1x1.25x1.5x1.75x
A slower D faster S reset
Study without fighting the player
Match playback to how you learn.
The goal is comprehension — not maxing the speed slider every time.
Hear quiet recordings
Boost soft instructor audio up to 200% in Free or 600% in Pro, increasing gradually to avoid clipping.
Volume boosterReuse a lecture setup
Save a named template with speed and volume, then keep Udemy, Coursera, and YouTube on separate remembered settings.
Online courses hubA simple study workflow
Install once, then adjust per course.
UVE changes playback locally in Firefox. It does not alter course files or your account settings on the learning platform.
- 01
Install on Firefox
Add UVE from Mozilla Add-ons and open a lecture with an HTML5 player.
- 02
Find a comprehension-safe pace
Increase in small steps. Use A, D, and S while you watch.
- 03
Save what works
Store a template or rely on per-site memory for the next session.
Student FAQ
Answers for course watching.
Is UVE useful for long lectures?
Yes. Fine speed steps help you move faster through familiar explanations and slow down for dense material, while per-site memory keeps course preferences separate from other websites.
What is included in Free vs Pro for students?
Free includes speed up to 3x, volume boost up to 200%, three templates, YouTube captions, and keyboard shortcuts. Pro unlocks up to 16x speed, 600% volume, OpenSubtitles search, subtitle file upload, and five templates.
Is there a student price?
Pro Student is a discounted one-time license for currently enrolled students. Verify on the student page, then complete checkout.
Does UVE work on university players?
UVE works with compatible HTML5 video. Many course platforms use HTML5 players, but protected or custom players may limit extension control.