Should I write to the limit or to the fold?
To the fold, for anything that lives in a feed. The limit is a hard ceiling the platform enforces; the fold is where readers stop seeing your words without tapping "…more" — and most never tap. A 2,000-character Instagram caption is legal, but only the first ~125 characters are doing feed work. Put the hook and the payoff before the fold, and treat everything after it as bonus material for readers you've already won.
Is this a Twitter (X) and Instagram character counter too?
Yes — it's every platform's counter at once. Paste your text and it shows the live count against X's 280-character post limit, Instagram's 2,200-character caption limit, plus TikTok, LinkedIn, Threads, YouTube, and more, side by side. So it works as a Twitter/X character counter, an Instagram caption length checker, and a TikTok character counter in a single view, with each platform's fold point flagged as well as its hard limit.
Do hashtags, mentions, and links count toward the limit?
Hashtags and mentions count as ordinary text on every major platform — #springdrop is ten characters everywhere. Links vary: X and Mastodon flatten every URL to a flat 23 characters regardless of its real length, while Instagram, LinkedIn, and Threads count the full URL. That flat 23 is why a tweet with a monster link can fit when your notes app says it can't.
Is there an ideal post length?
Not a universal one, and most "ideal length" statistics are confounded — short posts get more engagement partly because punchy ideas get written short. What holds up in practice: the first sentence carries the post on every platform, feed-folded platforms reward front-loading, and length should follow the idea. Write the idea, front-load it, and let this table tell you where it stands — not the other way around.
Why do the platform columns show different counts for the same text?
Because platforms genuinely count differently. X weighs characters (most Latin script is 1, emoji and CJK are 2) and flattens URLs to 23; Mastodon borrows the URL rule; Bluesky counts graphemes, so a four-code-point family emoji is one character. The columns apply each platform's own arithmetic — the same engine our thread splitter uses — which is why they're trustworthy and why they disagree with each other.
What happens if I publish over the limit?
Most platforms simply block the publish button until you're under — X greys out Post, Instagram refuses the share. The sneakier failure is pasting: some apps and schedulers silently clip pasted text at the limit, and the missing tail is easy not to notice until a follower asks why your caption ends mid-sentence. After pasting a long caption anywhere, check the last line survived.
Do line breaks and blank lines count as characters?
Yes — every line break is one character, and a blank line between paragraphs is two. They're usually worth the spend, since whitespace is what makes long captions readable. The platform-specific wrinkle is Instagram, which has a habit of stripping line breaks on publish under certain conditions — a formatting quirk, not a counting one.
