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This guide demos how to bold YouTube comments – the demo also includes how to italicize, or strike through YouTube comments.
Option 1: Bold YouTube Comments from a PC
- Open YouTube.com on your PC. Then open the video you want to comment on.
- When the video opens, scroll down to Comments and click on the Add a public comment text field.

- To bold YouTube comments, start by typing asterisk (*). Then type your comment and end with another asterisk (*). To post your comment click COMMENT.
*I am not so sure Nigel Farage actually wants the UK out of the EU!*

- Here is the comment I just posted. Compare it to the one beneath it. Mine is bold! To see how to italicize a YouTube comment see the next points.

- To italicize a YouTube comment, add underscore (_) before and after the comment. As with making a comment bold, DO NOT add a space between the underscore (_) and your actual comment. Here is an example…
_I am not so sure Nigel Farage actually wants the UK out of the EU!_
And here is the comment in YouTube – displayed in italics!

- Finally, to strike through a YouTube comment add a hyphen (-) before and after the comment without any spaces between the hyphen (-) and your actual comments…
-I am not so sure Nigel Farage actually wants the UK out of the EU!-
Here is the result in YouTube.

Option 2: Bold Comments from the YouTube App
- Open the YouTube App on your phone. Then open the video you want to comment on.

- When the video you want to comment on opens, scroll down to Comments. Then click Add a public comment…

- To bold YouTube comments add asterisk (*) before and after the comment as shown below.
*This is a sample bold YouTube comment - no space between this text and asterisk*
Here is the comment in the YouTube mobile App.

And the result in bold!

- To italicize your comment, add an underscore (_) before and after the comment as shown below…
_This is a sample italicized YouTube comment - no space between this text and asterisk_
- Finally, to strike through your YouTube comment, add a hyphen (-) before and after – with no spaces between the hyphens and your comment.
-This is a sample italicized YouTube comment - no space between this text and asterisk-
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