The Live Transcription Daemon
Google Chrome includes a highly advanced accessibility feature known as “Live Caption.” When enabled, Chrome silently monitors all audio playing through the browser (from YouTube videos to background web games). It routes this audio through an on-device machine learning model to generate real-time subtitles, which are displayed in a floating box on your screen. While incredibly useful for the hearing impaired, this real-time transcription engine consumes massive amounts of CPU power and memory. If you do not need subtitles and want to maximize browser performance, you must kill this daemon.
How to Disable Live Caption Globally
You can permanently sever the browser’s background audio transcription engine via Chrome’s Accessibility Settings.
- Open the Google Chrome desktop browser.
- Click the three vertical dots (⋮) in the top right corner and select Settings.
- In the left-hand sidebar, click on Accessibility.
- Locate the master toggle switch labeled Live Caption at the very top of the main window.
- Toggle this switch to the Off position.
Reclaimed Processing Power
The change takes effect instantly. Google Chrome will completely terminate the background machine learning daemon responsible for analyzing audio streams. The browser will instantly stop routing sound through the transcription engine. When you play a podcast or a video, the audio will be passed directly to your system speakers without any intermediate processing. The floating black subtitle box will permanently disappear, guaranteeing that your CPU cycles are dedicated entirely to rendering web pages rather than generating unneeded text.