Write the post here, select the words, click B, copy and paste into Threads. Threads has no bold button, so the bold comes from Unicode letters.
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Free Threads text formatter
Threads posts take plain text only, so this tool writes bold and italic in Unicode letters you can paste into a post or a reply.
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How Threads text formatting works
500 characters, shown whole
Threads shows the full post, so a bold word anywhere gets seen. Keep styles for the one idea the post is about.
Check the count before posting
Threads counts emoji by their size in bytes, and styled letters are just as large. Test a heavily styled post before scheduling it close to 500.
Topic tags stay plain
A Threads post takes one topic tag. In styled letters it becomes a different word, so keep the tag plain.
Example: “Big news” = 𝗕𝗶𝗴 𝗻𝗲𝘄𝘀: 8 characters in the counter here
Checked on October 11, 2026, against Threads's rules and limits.
Reference
Where styled text works on Threads, and where it does not
Every place you might paste styled letters on Threads, and what happens there.
| On Threads | Styled text | Good to know |
|---|---|---|
| Posts | Works | Test long styled posts against 500 |
| Replies | Works | Keep it to a word or two |
| Bio | Works | Keep your name plain for search |
| Topic tag | Breaks it | Styled tags are a different word |
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Threads posts, planned in Mydrop
Mydrop's editor shows each Threads post in the real preview, checks it against 500 characters and its one topic tag, and publishes it on schedule.
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Questions
Threads text formatting, answered
It can. Threads counts emoji by their size in bytes, and styled letters are as large as emoji. The counter here counts letters; leave room on a long styled post.
You can, but it becomes a different tag. Keep the topic tag plain.
It can be. Some screen readers skip styled letters, others spell each one out. Style a few words, never a whole post, and never your name or a link.
Yes. No signup, no limit, and your text never leaves your browser.
Format it here. Schedule it to Threads in Mydrop.
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