Does SimIntpr work with all YouTube videos?

No, SimIntpr only works when the YouTube video has at least one official subtitle/caption.

How do I set up SimIntpr?

Pin the extension and left-click the icon to set up language, voice and other settings. Choose a YouTube official subtitle as the translation source, then select your preferred voice language, tune, and speed.

Does SimIntpr remember my settings?

Yes, SimIntpr remembers your settings locally, so the translated voice comes up every time you open a new YouTube video without needing to set up repeatedly.

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SimIntpr

SimIntpr - Chrome Extension

Name: SimIntpr
Rating: 3.3 (67 reviews)
Author: toolify

Install Extension

3.3

67 Reviews

0 Saved

Introduction:

A virtual simultaneous interpreter for YouTube videos, translating subtitles and speaking them out.

Updated Time

Mar 29 2026

Active Users

10.0K

URL

https://chromewebstore.google.com/detail/simintpr-translate-speak/kjheadnejomnapknbjdficacmoppeege?utm_source=toolify

Browser Extension

Free

AI Voice Over AI Video Translator AI Text-to-Speech

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SimIntpr AI Chrome Extension Information

What is SimIntpr ai chrome extension?

SimIntpr is a virtual Simultaneous Interpreter for YouTube videos. It translates YouTube video subtitles and speaks them out. It translates YouTube subtitles/captions into almost all widely used languages and reads them out using a state-of-the-art Text-To-Speech (TTS) Engine, supporting as many as 67 voices covering almost 30 different languages. To make the extension work, the YouTube video should have at least one official subtitle. The translated voice does not conflict with the YouTube original one.

How to use SimIntpr ai chrome extension?

Install the SimIntpr extension. Choose a YouTube official subtitle as the translation source, then select your preferred voice language, tune, and speed. The translated voice will then play alongside the original YouTube audio. Pin the extension and left-click the icon to set up language, voice and other settings.