Real-time character limit checking across Twitter / Instagram / Facebook / LinkedIn / YouTube / TikTok
Regular tweets are limited to 280 characters. Twitter Blue/Premium users can post long tweets up to 4,000 characters. Each CJK character counts as 1 character.
Post caption: 2,200 characters, title: 150 characters, bio: 150 characters, comment: 300 characters. Content exceeding limits will be truncated.
Chinese characters take 3 bytes in UTF-8 encoding, English takes 1 byte, and emojis may take 4 bytes. Some platforms calculate limits by bytes.
TikTok video title/description is limited to 150 characters (~300 bytes), username is limited to 24 characters.