A character limit is the maximum number of individual characters—including letters, numbers, punctuation marks, and spaces—allowed in a single piece of text. These limits are enforced by software systems to manage technical bandwidth, fit text within layout designs, or encourage concise writing.
The concept originated with SMS text messaging, which was limited to 160 characters in 1984 so that text could fit into the existing cellular signaling architecture. Major Social Media Character Limits
Most platforms impose strict limits on content length, though several offer expanded caps for premium or specific content tiers: New TikTok Update: 4000 Character Limit for Captions!
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