# YouTube Subtitle Styler

> Force your preferred subtitle style on YouTube — font, size, color, background and more. Styles stay locked in even when YouTube resets your preferences.

Canonical page: [https://chrome-stats.com/d/youtube-subtitle-styler](https://chrome-stats.com/d/youtube-subtitle-styler)

## Overview

- **ID:** `youtube-subtitle-styler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Sefohui
- **Category:** appearance,photos-music-videos
- **Daily users:** 3
- **Weekly downloads:** 2
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.4.0
- **Last updated:** 2026-09-08
- **First published:** 2026-03-09
- **Size:** 24 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/youtube-subtitle-styler/)

## Description

YouTube Subtitle Styler lets you take full control over how subtitles look on YouTube. Set your preferred font, size, text color, background color and opacity, bold, italic, and text shadow — then save once and never worry about YouTube resetting your preferences again.

Styles are enforced using CSS injection with a MutationObserver that automatically reapplies your settings if YouTube tries to override them. All settings are stored locally and applied instantly on every YouTube page you visit.

No account required. No data collected. Open source.

GitHub: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/56d72de4d0f04a1713766f884dd4bf1bd74faedbb1039b46804b4aa2ef28c040/https%3A//github.com/Sefohui/youtube-subtitle-styler" rel="nofollow">https://github.com/Sefohui/youtube-subtitle-styler</a>

## Rankings

- #52,578 — Overall
- #237 — style

## Permissions and access

### Permissions

- `storage`
- `tabs`

### Host permissions

- `*://*.youtube.com/*`

### Content script matches

- `*.youtube.com`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/youtube-subtitle-styler)