How long can a video on X be?

2 minutes 20 seconds without Premium. Premium accounts can post up to 4 hours on x.com and iOS.

How does X count characters?

Up to 280, weighted: every link is 23, emoji and CJK characters are 2. Premium accounts can write up to 25,000.

X · SIZES AND SPECS

X post sizes,
checked for 2026.

Four photos, 5 MB each, video up to 2 minutes 20 seconds without Premium, and 280 characters where a link counts as 23. Every number, with its source.

Let PaperFlight size every post — 7 days free No card. Or use the tables below.

THE SHORT ANSWER

A post on X takes up to 4 photos (each up to 5 MB, JPEG, PNG or GIF) and a video of up to 2 minutes 20 seconds — Premium accounts up to 4 hours. X publishes no feed image size for ordinary posts; its ad specs use 1200 × 1200 (1:1) and 1200 × 628 (1.91:1). Text is 280 characters, weighted: a link counts as 23 and an emoji as 2.

Images

Photos in one post: Up to 4
File: JPEG, PNG or GIF · up to 5 MBNot BMP or TIFF. X's API also takes WEBP.
Animated GIF: Up to 15 MB on the web5 MB on mobile web.
Feed image size: Not statedX's ad specs suggest 1200 × 1200 (1:1) or 1200 × 628 (1.91:1), and now also take 4:5.
Size we recommend: 1080 × 1350 (4:5) or 1:1Our choice, not X's: one image fills more of the timeline in a tall shape.

Video

Length: Up to 2 min 20 sWithout Premium, on every app.
With Premium: Up to 4 hoursOn x.com and iOS; 10 minutes on Android.
File: MP4 or MOVX's API takes up to 512 MB.

Text

Post: 280 characters, weightedA link counts as 23 whatever its length; emoji and Chinese, Japanese and Korean characters count as 2.
With Premium: Up to 25,000 characters

What works on X.

Say it in one line. X rewards the short, sharp version — write it separately, don't cut down your LinkedIn post.
Keep images under 5 MB: save as JPEG, not a large PNG.
A long carousel needs its best four slides here.
Count the link as 23 characters when you plan the text.

WITH PAPERFLIGHT

An X version of every post, inside 280.

PaperFlight draws feed posts at 1080 × 1350 (4:5) and full-screen video at 1080 × 1920 (9:16).
Images are saved as JPEG so they stay under X's 5 MB; a slide post is cut to the four images X takes.
The Writer writes X its own short caption — counted the way X counts, your sign-off included.
Your AI CMO plans the week, the team writes and designs each post, and you approve — or let it publish on its own.

Start your 7-day free trial No card. Founding price $199 a month while seats last.

Questions people ask.

What size should an image on X be?: X publishes no size for ordinary posts. Its ad specs use 1200 × 1200 (1:1) and 1200 × 628 (1.91:1); keep the file under 5 MB.
How many images can I post on X?: Up to 4 photos in one post.
How long can a video on X be?: 2 minutes 20 seconds without Premium. Premium accounts can post up to 4 hours on x.com and iOS.
How does X count characters?: Up to 280, weighted: every link is 23, emoji and CJK characters are 2. Premium accounts can write up to 25,000.

Hire the team. Keep your mornings.

PaperFlight is an AI CMO with its own team: it plans the week, writes and designs every post in your brand — at the right size for X and seven other channels — publishes it and learns from the results. 7 days free, no card.

Start your free trial See pricing

Last checked 6 October 2026. Platforms change their specs often and some numbers come from their developer docs rather than the app — check the help pages before you rely on one.

X post sizes,checked for 2026.