Social Media Character Limits: The Complete 2025 Guide
Every platform, every field, every limit — in one place. Stop guessing and start posting with confidence.
If you manage social media accounts — whether for a brand, a client, or yourself — you know the frustration of crafting the perfect post only to find it gets truncated. Each platform enforces its own character limits, and those limits change more often than you might expect. This guide covers every major platform with limits updated for 2025, so you always know exactly how much room you have.
Twitter / X
Twitter was built on brevity. The original 140-character limit defined an entire communication style. In 2017, that doubled to 280 characters for most users. In 2023, X Premium (formerly Twitter Blue) subscribers gained the ability to post up to 25,000 characters — essentially turning tweets into short articles.
For most users, the breakdown looks like this: regular posts are capped at 280 characters, replies follow the same 280-character limit, and direct messages allow up to 10,000 characters. Display names can be up to 50 characters, while usernames (@handles) are limited to 15 characters. Bio text maxes out at 160 characters — the same as a Google meta description, which makes it easy to repurpose copy between the two.
Even with the expanded limits for premium users, shorter tweets still tend to perform better in terms of engagement. Data from social media analytics platforms consistently shows that tweets between 70 and 100 characters receive the highest engagement rates. The sweet spot is saying something meaningful in as few words as possible.
Instagram captions can be up to 2,200 characters, but only the first 125 characters appear before the "more" truncation on the feed. This means your opening line is critical — it needs to hook readers and compel them to tap for the full caption.
Instagram bios are limited to 150 characters, and usernames can be up to 30 characters. Hashtags are technically part of the caption and count toward the 2,200-character limit, though you can use up to 30 hashtags per post. Story text overlays have no official character limit but are practically constrained by screen space — aim for under 100 characters per text element to maintain readability.
Reels descriptions share the same 2,200-character caption limit. Comments are capped at 2,200 characters as well, and you can include up to 30 hashtags in comments too, which many social media managers use to keep captions cleaner.
LinkedIn is where long-form content thrives. Regular posts allow up to 3,000 characters, giving professionals plenty of room to share insights, stories, and thought leadership. However, only the first 140 characters display before the "see more" fold on mobile, so front-load your most compelling statement.
LinkedIn articles (published through the built-in publishing platform) have a generous 120,000-character limit — equivalent to a small book. Company page descriptions are limited to 2,000 characters. Connection request messages are 300 characters, which forces you to be concise when reaching out to new contacts. The "Headline" field under your name allows 220 characters, and the "About" summary section supports up to 2,600 characters.
YouTube
YouTube video titles are limited to 100 characters, though YouTube search results typically display only the first 60-70 characters. This makes front-loading keywords essential. Video descriptions allow up to 5,000 characters, with only the first 150-200 characters visible above the "Show more" fold.
Channel descriptions can be up to 1,000 characters. Comments are limited to 10,000 characters, which is rarely a practical concern. Playlist titles allow 150 characters, and playlist descriptions support up to 5,000 characters. Community posts are limited to 2,000 characters.
TikTok
TikTok significantly expanded its caption limit in 2023, increasing it from 300 to 4,000 characters. This was a major shift for the platform, which had previously been almost entirely video-focused. The expanded limit lets creators add context, hashtags, calls to action, and even mini-articles alongside their videos.
TikTok bios are limited to 80 characters, and usernames can be up to 24 characters. Direct messages are capped at 1,000 characters. Comments allow up to 150 characters, which keeps comment sections fast-paced and concise.
Facebook posts technically support up to 63,206 characters — one of the most generous limits on any platform. In practice, posts are truncated after about 477 characters on desktop and even less on mobile, with a "See more" link revealing the rest. The most engaging Facebook posts tend to be under 250 characters.
Page descriptions allow 255 characters. Comments support up to 8,000 characters. Messenger messages are limited to 20,000 characters. Ad headlines are limited to 40 characters (though 25 is recommended), and ad primary text is capped at 125 characters for optimal display.
Pinterest pin titles are limited to 100 characters, with pin descriptions allowing up to 500 characters. Board names can be up to 50 characters, and board descriptions support 500 characters. Profile bios are limited to 500 characters. Since Pinterest functions as a visual search engine, description text is heavily weighted for SEO — use your character allowance strategically with relevant keywords.
Tips for Working Within Character Limits
Rather than writing freely and then painfully cutting, start with the limit in mind. Write your key message first, then expand if you have room. Use a character counter tool to track your length in real time as you draft.
Front-load every post with the most important information. On every single platform, there is a truncation point where the rest of your text disappears behind a "more" link. Assume most people will not click it. Your first sentence should be able to stand alone.
When you need to cut characters, start by eliminating filler words: "really," "very," "just," "that," and "in order to" can almost always be removed without losing meaning. Replace phrases with shorter equivalents — "at this point in time" becomes "now," and "in the event that" becomes "if."
Use our word counter and character counter to preview your text against platform limits before posting. Both tools run entirely in your browser, so your drafts stay private — even sensitive marketing copy or unreleased announcements.