Question 1

What's Slack's bold syntax?

Accepted Answer

Single asterisks: *bold*. Underscore for _italic_, tildes for ~strike~, backticks for `code`. Our toolbar inserts them around your selection.

Question 2

Does it work in DMs, channels and Canvases?

Accepted Answer

Yes in DMs and channels. Canvases use a richer editor with its own toolbar — paste plain text there.

Question 3

Will the formatting survive in a Slack workflow message?

Accepted Answer

Yes. Slack workflows pass message content through the same Markdown renderer as direct posts.

Question 4

Can I bold someone's name in a mention?

Accepted Answer

Mentions render as a pill, so you can't bold them. Put the emphasis on the action word right after the mention.

Question 5

How do I bold text on LinkedIn when there's no bold button?

Accepted Answer

LinkedIn's post box is plain text, so there's no toolbar — the workaround the whole creator economy uses is Unicode bold. Type your line, convert it to bold Unicode, then paste it into your post, comment, headline or About section and the emphasis sticks. Bold just the hook — the part that shows before the “…see more” cut-off — to earn the click. Keep the rest plain so the post stays skimmable and accessible.

Question 6

How do I add line breaks and spacing to an Instagram caption?

Accepted Answer

Instagram collapses the returns you type in the native composer, which is why captions come out as one block. The reliable fix is to add the breaks with a tool that inserts real spacing rather than invisible-character hacks (which can break search and accessibility). Write the caption with the breaks you want, generate it, and paste the result. Put your hook on line one, since that's the part that shows before 'more'.

Question 7

Does bold and italic formatting work on WhatsApp?

Accepted Answer

WhatsApp is the exception — it has its own built-in markdown: wrap text in *asterisks* for bold, _underscores_ for italic, and ~tildes~ for strikethrough. You usually don't need Unicode there. Use a WhatsApp formatter when you want a style WhatsApp's markdown doesn't cover (like small caps or script for a status), or when you're writing once and posting the same text across several apps that don't share WhatsApp's syntax.

Question 8

Why does my formatting disappear when I paste it somewhere?

Accepted Answer

Because that editor is plain-text and strips markup. Markdown (*bold*), HTML tags and rich-text styling only render where the platform explicitly supports them — paste them into Instagram or LinkedIn and you see the raw asterisks or nothing at all. Unicode styling is different: the style is baked into the characters, so it survives any plain-text box. That's the whole reason Unicode formatters exist.

Slack Text Formatter

Why format text on Slack?

Best practices for Slack

Format for other platforms

Slack formatter FAQ

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