The 2026 Cheat Sheet: Limits by Platform

Here are the numbers for the major networks. "Limit" is the hard cap; the ideal lengths noted are where engagement research consistently points.

• X (Twitter) — 280 characters per post for standard accounts (Premium subscribers get up to 25,000); bio 160; display name 50. Ideal post: 70-100 characters.
• Instagram — captions 2,200 characters, but only about the first 125 show before the "more" cut; bio 150; up to 30 hashtags (3-5 is current best practice); comments 2,200.
• LinkedIn — posts 3,000 characters with roughly the first 200 visible before "see more"; headline 220; About section 2,600; articles up to 110,000. Ideal post: under 1,300.
• Facebook — posts technically allow 63,206 characters; ideal is a tiny fraction of that (40-80 characters gets the best engagement); bio/intro 101; comments 8,000.
• TikTok — captions 4,000 characters (expanded from the old 2,200); bio only 80, the tightest bio on any major platform.
• YouTube — titles 100 characters (front-load the first 70, which is what search results display); descriptions 5,000; comments 10,000.
• Threads — 500 characters per post; bio 150.
• Pinterest — pin titles 100; descriptions 500, with the first 50-60 carrying the most search weight.

Why the First Characters Matter More Than the Limit

The hard cap is rarely the number you should write to. Nearly every feed truncates long text and hides the rest behind "more": roughly 125 characters on Instagram, 200 on LinkedIn, 70 title characters in YouTube search. Whatever falls after the fold only gets read if the opening earns a tap.

So treat each platform as having two limits: the technical maximum and the visible window. Put the hook, the key claim, or the payoff inside the visible window, and use the remaining space for detail, hashtags, and links. This is also why "characters with spaces" is the number to track — every platform counts spaces, punctuation, and emoji toward the limit (emoji often count as two characters, and URLs on X always count as 23 regardless of length).

Don't Forget Search: Meta Descriptions and Titles

If you also write for the web, two more numbers belong on the cheat sheet. Meta descriptions get cut around 155-160 characters in Google results, so 140-160 is the working target; page titles display reliably up to about 60 characters. Neither is a hard technical limit — Google truncates rather than rejects — but a description that gets clipped mid-promise wastes its click-earning power.

The same discipline applies to email subject lines (roughly 40-60 characters before mobile clients clip them) and app store descriptions. Anywhere text meets a container, there is a number worth knowing before you hit publish.

A Fast Workflow for Writing to Multiple Limits

Rather than rewriting from scratch per network, draft once and trim outward-in:

• Step 1 — Write the full version of your message with no limit in mind; get the idea complete first.
• Step 2 — Paste it into the word counter to see the exact character count with spaces — free, in the browser, nothing to install.
• Step 3 — Cut to the strictest platform on your list first (usually X at 280); this forces the sharpest version of the idea.
• Step 4 — Expand back up for roomier platforms, keeping the hook inside each one's visible window (125 characters for Instagram, 200 for LinkedIn).
• Step 5 — Re-check each variant in the counter before posting — quotes, emoji, and links add characters you did not type consciously.
• Step 6 — Prep the rest of the post while you are at it: crop images to each platform's ratio with the image cropper, and if you are sending followers to a physical location or print material, generate a scannable link with the QR code generator.

Frequently Asked Questions