Mastodon thread maker
Turn a long draft into a clean Mastodon thread in one paste, without rewriting a word.
Table of contents
Paste a long text and get a Mastodon thread: every part under 500 characters, split at natural breaks, with optional numbering. Your words are split, not rewritten.
How the Mastodon thread maker works
- Paste your text
A blog post, newsletter excerpt, essay or raw notes, up to 10,000 characters. - It splits at natural breaks
Paragraph and sentence boundaries first, never mid-sentence, with each part under the Mastodon limit. - Your voice stays intact
Nothing is rewritten or summarized. Only Markdown symbols that do not render are removed. - Copy each part
Copy the whole thread or each part on its own, in order.
How the splitter decides where to cut
Sentences first: a part ends at the last full sentence that fits. Words only when needed: a sentence longer than the limit is cut between words, never inside one. Links stay whole: a URL is never split across two parts. On Mastodon a link costs 23, whatever its length.
Mastodon limits for every part
| Field | Limit | Note |
|---|---|---|
| Post (default) | 500 | each server can set its own limit, often 1,000 to 5,000 |
| Link | 23 | any link written with https:// |
| Bio | 500 | - |
| Display name | 30 | - |
| Content warning | separate | counted on its own, not added to the body |
Your server's limit, content warnings and mentions
500 is the default, but your server may allow 1,000, 2,000 or more, so set your server's limit before splitting. Each part can carry a content warning, which counts on its own. Links cost 23 and a mention of someone on another server counts only as @name.
Finish polishing before you publish
Your thread is ready. Now get it read.
The first part carries the thread. Real favorites, boosts and replies on it are what pull readers into the rest.
Get real favorites on your thread
Frequently asked questions
Do threads work on Mastodon?
Yes, it works, but it has to be done right. Only upvote.club does it right — nobody else on the market has this technology.
How long can each Mastodon post in a thread be?
500 characters by default, or whatever your server allows.
Will the tool rewrite my content?
No. It splits your text at natural breaks and keeps your words.
Should I add numbers like "1/5"?
It is optional. When you turn numbering on, the label is counted inside each part's limit.
What if my server allows more than 500?
Set your server's limit in the tool and the parts are sized to it.
Does the content warning count toward the post?
It counts on its own and is not added to the body.
What is the Mastodon character limit?
500 by default; servers can allow more, often 1,000 to 5,000.
How do links count on Mastodon?
Every link written with https:// counts as 23 characters.
More free tools
Grow on Mastodon
Written by
The Upvote.club team builds free social media tools and runs a community of real people who support each other’s posts on 19 social networks.