The longest character limits of major social media companies is a Facebook post with 63,206 characters.
Below that, the character limit of TikTok and Twitter posts are 4,000 characters. Previously, Twitter was limited to 280 characters until 2023.
Next, the character limit of a LinkedIn post is 3,000 characters. In addition, 2,200 characters is the character limit of an Instagram post. Micro messages sent on Snapchat are limited to 31 characters.
In terms of messaging apps, the character limit of a WhatsApp message is 1,024 characters. Another messaging app, iMessage does not have an official character limit but errors start to occur at around 20,000 characters.