Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of SubtitleSleek Pro

SubtitleSleek Pro by Gy

Clean up distracting subtitle formatting and styles on streaming platforms for a focused, cinematic viewing experience.

0 (0 reviews)0 (0 reviews)
1 User1 User
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
SubtitleSleek Pro is a movie viewing utility that allows you to customize and optimize subtitle display directly in your browser. Users can change the font, size, color, and position of subtitles to suit different video content. The tool supports good synchronization, has a user-friendly interface, and provides a clearer and more comfortable movie viewing experience.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Optional permissions:

  • Access your data for sites in the netflix.com domain
  • Access your data for sites in the youtube.com domain
  • Access your data for sites in the primevideo.com domain
  • Access your data for sites in the disneyplus.com domain

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support Email
Version
1.0.0
Size
13.64 KB
Last updated
a month ago (Feb 20, 2026)
Related Categories
  • Other
License
All Rights Reserved
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.