# 一字幕 - 视频字幕插件 | 电影字幕 | 免费

> 一款免费的支持双语的音频、视频字幕的辅助插件。可按单词，短语，整句翻译；支持(YouTube，Bilibili ,百度网盘等平台)；亦可支持本地外挂字幕和内嵌字幕。可变速、重复播放、跟读、画面遮挡。

Canonical page: [https://chrome-stats.com/d/1zimu](https://chrome-stats.com/d/1zimu)

## Overview

- **ID:** `1zimu`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 字幕君
- **Category:** language-support
- **Daily users:** 626
- **Weekly downloads:** 81
- **Rating:** 5.00 / 5 (7 ratings)
- **Version:** 0.7.2
- **Last updated:** 2026-09-04
- **First published:** 2024-08-23
- **Size:** 5.78 MB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/1zimu/)
- **Website:** [https://1zimu.com/](https://1zimu.com/)

## Description

**一字幕**是一款免费的双语音频、视频字幕与外语学习辅助插件，支持 YouTube、Bilibili、百度网盘及本地音视频资源。用户可以查看双语字幕，按单词、短语或整句翻译，使用词典、语法分析、收藏夹和页面选词查询，并支持 135 种语言的字幕翻译。

插件提供变速播放、重复播放、跟读、快捷键控制、全屏或局部画面遮挡、字幕下载与导出、内嵌字幕和 `.srt` 外挂字幕播放，以及文本转语音（TTS）功能。还支持暗黑模式、笔记与标签管理、统计视图、PPT 翻页笔及 AI 工具协作，帮助用户更高效地利用在线视频和本地媒体学习语言。

## Rankings

- #4,348 — Overall
- #182 — Language Support
- #216 — ux

## Permissions and access

### Permissions

- `storage`
- `unlimitedStorage`
- `activeTab`
- `contextMenus`
- `alarms`
- `tabs`
- `cookies`
- `sidePanel`
- `declarativeNetRequest`
- `declarativeNetRequestWithHostAccess`

### Host permissions

- `http://*/*`
- `https://*/*`

### Content script matches

- `chat.deepseek.com`
- `www.doubao.com`
- `www.kimi.com`
- `www.qianwen.com`
- `chatgpt.com`
- `claude.ai`
- `gemini.google.com`
- `x.ai`
- `www.lingguang.com`
- `<all_urls>`
- `*.bilibili.com`
- `bilibili.com`
- `pan.baidu.com`
- `*.youtube.com`
- `youtube.com`
- `localhost`
- `frp.1zimu.com`
- `1zimu.com`
- `www.1zimu.com`

## Safety

- **Risk impact:** Very 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/1zimu)