Character Limits for Every Platform

Character limits for tweets, threads, bios, and direct messages on X (formerly Twitter).

Google's recommended character limits for meta descriptions and page titles for maximum SERP visibility.

Caption, bio, story, and hashtag character limits for Instagram posts and profiles.

Post length, profile headline, and about section character limits for LinkedIn.

GSM-7 and Unicode SMS character limits, including multi-part message segment encoding.

Headline, description, and display URL character limits for Google responsive search ads.

Bio, caption, and username character limits for TikTok creators and brands.

Title, description, and tag character limits for YouTube videos, plus where the platform truncates each one.

Recommended subject line and preview text lengths for optimal email open rates.

Post, comment, bio, and ad character limits for Facebook — plus where the 'See more' cutoff really falls.

Title, self-post, comment, and flair character limits for Reddit posters and moderators.