Threads Specifications

Threads supports scheduling programmatic text-only posts, single images, carousel albums, and videos to connected Threads accounts.

Supported Post Types

• Text (text): A text-only status update post.
• Image (image): A single image post with a caption.
• Album (album): A carousel post consisting of multiple images and/or videos with a caption.
• Video (video): A single video post with a caption.

Media Technical Requirements

Images & Albums

• Supported Formats: JPEG, PNG.
• Maximum File Size: 8 MB per image.
• Album Size Limit: Up to 10 items per album (can be a mix of images and videos).

Videos

• Supported Formats: MP4, MOV (H.264 video codec, AAC audio).
• Maximum File Size: 1 GB.
• Video Duration: Maximum 5 minutes.
• Maximum Resolution: Up to 1920px wide.

Text & Caption Limits

• Standard Caption (description): Maximum 500 characters (including hashtags and @mentions).
  • Note: Emojis are counted by their UTF-8 byte length, not as a single character.
• Hashtag Limit: Threads allows only 1 topic hashtag per post.
• Alt Text Limit: Maximum 1,000 characters for media accessibility descriptions.

Extra Configurations (additionalInfo)

When scheduling posts to Threads, you can configure the following Threads-specific fields inside the additionalInfo object of the request body:

Field	Type	Description
additionalInfo.topic	string	Set a single topic tag to categorize and label your post (periods and ampersands are not allowed).