Facebook does not offer a built-in bold text option for regular posts, comments, or captions
Use a bold text generator tool to convert your text before pasting it into Facebook
Type your text into the generator
Copy the bold version of the text
Paste it into your Facebook post, comment, or bio
Use bold formatting in Facebook Notes or other supported rich-text areas if available
Use Markdown-style formatting only where the platform or app supports it, not in standard Facebook posts
Check how the bold text appears on mobile and desktop before posting