# Auto-Subtitle

> Using speech recognition and machine translation to generate subtitles for videos.

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

## Overview

- **ID:** `auto-subtitle`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** auto-subtitle
- **Category:** language-support,photos-music-videos
- **Daily users:** 937
- **Weekly downloads:** 122
- **Rating:** 1.63 / 5 (30 ratings)
- **Version:** 0.2
- **Last updated:** 2020-10-26
- **First published:** 2020-04-06
- **Size:** 847 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/auto-subtitle/)
- **Website:** [https://www.auto-subtitle.com](https://www.auto-subtitle.com/)

## Description

Auto-Subtitle is a powerful Chrome extension that leverages AI-driven speech recognition and machine translation to automatically generate subtitles for videos across various web platforms. It supports live broadcasts, on-demand content, video chats, and video conferences, enhancing accessibility and understanding.

With its multi-language subtitle translation, Auto-Subtitle broadens content reach to diverse audiences globally. Note that due to processing, there may be a subtitle delay of over ten seconds. This extension is perfect for users seeking real-time subtitle assistance and language translation in online video interactions.

## Rankings

- #3,410 — Overall
- #135 — Language Support
- #24 — auto
- #42 — autogram
- #65 — autocomplete
- #91 — speech

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `contextMenus`
- `webNavigation`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 website URL may be invalid

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

## Review summary

Users appreciate that Auto-Subtitle can generate SRTs and help with accessibility and translation, and that it works on some sites. However, many reviewers report major drawbacks: it requires Google/Amazon cloud accounts and API keys (not clearly advertised), can be costly to use, has reliability problems (hangs/doesn’t work), and lacks clear guidance on securing API keys.

### Pros

- Generates automatic subtitles and exports SRT files (users can open/copy the generated text).
- Useful idea for accessibility and breaking language barriers (translation capability praised by multiple users).
- Works for some sites/videos for several users (toolbar icon and subtitle overlay appear on supported videos).

### Cons

- Requires a Google Cloud or Amazon Web Services account and an API key — several users said this requirement was not clearly stated.
- Can incur significant pay‑per‑use costs (translation/subtitle APIs), making it unsuitable for many personal users; several reviews called it effectively paid.
- Reliability issues: multiple reports that it doesn’t work, hangs while generating subtitles, or fails on some videos.
- Security and documentation concerns: instructions don’t clearly explain API key restriction or safe handling, so users worry about sharing keys.

## Similar extensions and apps

- [Auto-Subtitle Translator](https://chrome-stats.com/d/auto-subtitle-translator) — 451 users, 3.00 / 5
- [Live Subtitle & Translator](https://chrome-stats.com/d/live-subtitle-translator) — 108 users
- [AutoSubtitleFinder](https://chrome-stats.com/d/autosubtitlefinder) — 1 users
- [Auto-Caption Generator](https://chrome-stats.com/d/auto-caption-generator) — 21 users
- [Subtitles Translator](https://chrome-stats.com/d/subtitles-translator) — 36 users, 1.00 / 5
- [Real-Time Subtitle Generator](https://chrome-stats.com/d/real-time-subtitle-generator) — 46 users, 1.00 / 5
- [Temporary Subtitles Generator](https://chrome-stats.com/d/temporary-subtitles-generator) — 17 users, 1.00 / 5
- [YouTube Dubbing & Translate - AutoDub](https://chrome-stats.com/d/autodub-youtube-ai-dubbing) — 801 users, 3.75 / 5
- [YouSub](https://chrome-stats.com/d/yousub) — 12 users
- [Sublern — AI Translate Words in Video Subtitles](https://chrome-stats.com/d/sublern) — 176 users
- [YouTube Bilingual Subtitles — AI](https://chrome-stats.com/d/youtube-bilingual-subtitles-ai) — 1 users
- [AI Subtitle Translator](https://chrome-stats.com/d/ai-subtitle-translator) — 19 users

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