SimIntpr - Translate & Speak YouTube Subtitle

Translate YouTube video subtitles and speak out. Just like a YouTube virtual simultaneous interpreter.

As of June 2026, SimIntpr - Translate & Speak YouTube Subtitle has 10,000 users and a 3.29/5 rating from 69 reviews in the Workflow & Planning category.

Usersno change0%
10.0K
10,000
Ratingup 0.3 percent+0.3%
3.29
69 reviews
Reviewsup 1.5 percent+1.5%
69
Version
4.0.0
Manifest V3
90-day change · In the last 90 days this extension 1 version update.

History

3 snapshots

Tracking since Apr 1, 2026.

10.1K10.0K9.9KApr 1, 2026Jun 21, 2026
View as table
DateUsersRatingReviewsVersion
Apr 1, 202610.0K3.28683.8.0
Apr 5, 202610.0K3.28684.0.0
Apr 16, 202610.0K3.29694.0.0
Now10.0K3.29694.0.0

Permissions & access

Permissions
storagetts
Host access
https://*.simintpr.com/

Screenshots

SimIntpr - Translate & Speak YouTube Subtitle screenshot 1SimIntpr - Translate & Speak YouTube Subtitle screenshot 2SimIntpr - Translate & Speak YouTube Subtitle screenshot 3

About

SimIntpr is a virtual Simultaneous Interpreter for YouTube videos. It translates YouTube video subtitles and speaks them out.

If you want to watch any YouTube video and hear the voice of your own language, SimIntpr is your thumb of choice. It can translate the YouTube subtitles / captions into almost all widely used languages and read them out.

SimIntpr uses state-of-art Text-To-Speech(TTS) Engine to generate synthesized voice. It supports as many as 67 voices covering almost 30 different languages.

Currently, to make the extension work, the YouTube video should have at least 1 official subtitle. You need to choose a YouTube official subtitle as the translation source, then select your preferred voice language, tune, speed, etc.
We're working on supporting uploading your local subtitles, or links to external subtitles.

Once you set up, SimIntpr speaks out your preferred language and voice, just as a virtual simultaneous interpreter. The translated voice does not conflict with the YouTube original one. So you can keep them both and adjust the volume separately as you wish.

SimIntpr remembers your settings locally. Hence the translated voice comes up every time when you open a new YouTube video, needless to set up repeatedly.

Features:
✅ Translated YouTube subtitle and speak out
✅ Multiple speech voice related settings

Upcoming features:
🏃‍♂️ Support upload your local YouTube subtitle
🏃‍♂️ Support embed YouTube videos anywhere on the web

Supported languages include:
Almost all widely used languages are supported.
(Listing languages here is forbidden by Chrome Web Store to avoid keyword abuse.)

Tips:
🔹 Pin the extension and left-click the icon to set up language, voice and other settings.

Attention:
⚠️ This extension only works when the YouTube video has AT LEAST one official subtitle / caption

Contact:
😜 Also feel free to contact us if you have any questions or suggestions on this extension.
📧 Email: [email protected]

Technical

Version
4.0.0
Manifest
V3
Size
512KiB
Min Chrome
88
Languages
10
Featured
Yes

Metadata

ID
kjheadnejomnapknbjdficacmoppeege
Developer ID
u9657602021e12469aa0f5a74fd056f9f
Developer Email
[email protected]
Created
Jan 7, 2022
Last Updated (Store)
Mar 29, 2026
Last Scraped
Jun 21, 2026
Website
simintpr.com
Support URL

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Data sourced from the Chrome Web Store · last verified Jun 21, 2026.