Count a post the way Bluesky counts it, not the way your text editor does.
Free, no sign-up, and it runs entirely in your browser. Limits checked 2026-08-31.
300 left.
Bluesky is the only network here that enforces two limits at once: 300 grapheme clusters and 3,000 UTF-8 bytes, whichever is hit first. An emoji is one character and up to about 25 bytes, so a post of emoji can be well under 300 and still refused.
Grapheme clusters, straight from the protocol schema. There is a second ceiling of 3,000 bytes. Source.
Bluesky is the only network here that enforces two limits at once: 300 grapheme clusters and 3,000 UTF-8 bytes, whichever is hit first. An emoji is one character and up to about 25 bytes, so a post of emoji can be well under 300 and still refused.
Characters are counted as grapheme clusters — what a reader would point at and call one character. An emoji is one, an accented letter typed as two code points is one, and a flag is one. Your text editor's own count disagrees with all three.
The dropdown switches between the fields each network publishes a separate limit for, because the limit on a bio is not the limit on a post.
Bluesky is the only network here that enforces two limits at once: 300 grapheme clusters and 3,000 UTF-8 bytes, whichever is hit first. An emoji is one character and up to about 25 bytes, so a post of emoji can be well under 300 and still refused.
The counting rule is exact and comes from the platform's own documentation. Where a network publishes no figure for a field, the page says so rather than showing a confident number — that is the honest state of several of these, and pretending otherwise would be the easy thing to do.
Nothing. There is no server behind these pages — the tool is JavaScript running in your tab, so what you type stays in the browser and is never sent anywhere, by us or by anyone else.
Free, with no sign-up, no limit and no watermark. These tools cost us nothing to run because they run on your computer rather than ours. We build them because the people who need them are the people who might eventually want the product they sit next to — that is the whole arrangement, and it does not require anything from you.
Checking one post against one network by hand is fine. Checking a quarter of them across eight is the job Influenar does — every draft written against your brand kit, laid out on a calendar, and sized for the channel it is going to before you ever see it.