YouTube users have a wealth of options available to customise video content. One of these displays subtitles — also known as closed captions — on videos uploaded to YouTube to accompany audio with useful written text.

How to activate subtitles on YouTube in a web browser:

Captions can be either auto-generated or provided by the user who uploaded the video.

Turning captions on and off is a quick and easy process when watching a YouTube video.

YouTube subtitles can be activated by clicking the CC icon at the bottom of a YouTube video.

A red line will subsequently appear under the icon when YouTube closed captions have been turned on.

YouTube viewers can also adjust caption settings by tapping the gear icon.

If subtitles are available for a video, a variety of generated captions and other formats will be on offer.

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How to activate subtitles on YouTube for all videos:

Users can also enable closed captioning for all the videos viewed on YouTube from a web browser.

Enabling always-on captioning can be done from the YouTube account settings.

The feature will also work for the duration users are logged into YouTube.

Start the process by clicking the account icon to open the YouTube account menu.

Next, click Settings from the account menu provided by YouTube.

Then select Playback and Performance and check Always Show Captions.

How to upload a file to YouTube:

If you have a subtitle or closed caption file, you can simply upload it.

These types of files should contain the text and time codes for when each line of text should be displayed.

Start by clicking Upload a File on YouTube.

Then choose the type of file you have to upload and click Choose File.

Then use the editor to make any needed adjustments to the text and timing of your new subtitle or closed caption, then click Publish.