What image size works on Threads?

JPEG or PNG up to 8 MB, 320 to 1,440 px wide. We use 1080 × 1350 (4:5).

How long can a Threads video be?

Up to 5 minutes and 1 GB, MP4 or MOV.

Why does my Threads post go over 500 with emoji?

Threads counts an emoji as its UTF-8 bytes, so most count as 4 characters.

THREADS · SIZES AND SPECS

Threads sizes,
checked for 2026.

Up to 20 photos or videos a post, images to 8 MB, video to 5 minutes, and 500 characters where emoji count by their bytes.

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THE SHORT ANSWER

A Threads post takes up to 20 photos or videos (a carousel needs at least 2). Images are JPEG or PNG up to 8 MB and are shown up to 1,440 px wide; video is MP4 or MOV up to 5 minutes and 1 GB. Text is 500 characters, and an emoji counts as its UTF-8 bytes — most count as 4.

Images

File: JPEG or PNG · up to 8 MB
Width: 320 to 1,440 pxLarger images are scaled.
Size we recommend: 1080 × 1350 (4:5)

Carousels

Items in one post: 2 to 20Photos, videos or a mix; raised from 10 in September 2024.

Video

Limit: MP4 or MOV · up to 5 min · up to 1 GB

Text

Post: 500 charactersAn emoji counts as its UTF-8 bytes. At most 5 links.
Text attachment: Up to 10,000 charactersOptional, in the app, since September 2025.

What works on Threads.

Write it like a conversation — one point, one question.
Go easy on emoji; each costs several characters.
Use a carousel for steps; Threads takes up to 20.
Don't paste your LinkedIn post — cut it to 500 with the point first.

WITH PAPERFLIGHT

A Threads version of every post, inside 500.

PaperFlight draws feed posts at 1080 × 1350 (4:5) and full-screen video at 1080 × 1920 (9:16).
The Writer writes Threads its own caption, counted the way Threads counts, your sign-off included.
Slide posts go out as a carousel of up to 20 images.
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.

How many images can a Threads post have?: Up to 20 photos or videos; a carousel needs at least 2.
What image size works on Threads?: JPEG or PNG up to 8 MB, 320 to 1,440 px wide. We use 1080 × 1350 (4:5).
How long can a Threads video be?: Up to 5 minutes and 1 GB, MP4 or MOV.
Why does my Threads post go over 500 with emoji?: Threads counts an emoji as its UTF-8 bytes, so most count as 4 characters.

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 Threads and seven other channels — publishes it and learns from the results. 7 days free, no card.

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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.

Threads sizes,checked for 2026.