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Twitter Publishing

This page contains high-level specifications for scheduling and publishing Twitter posts through Publisher.

If your post does not meet the requirements to publish, Publisher informs you so you can correct the post.


  • Maximum number of characters: 280

This information is valid for when you use the Import preview link option.

  • Maximum number of links: 1


  • Allowed extensions: jpg, jpeg, png, gif, tif, tiff

  • Maximum number of files: 4

  • Maximum file size: 5 MB

  • Maximum image dimensions: 6,000px x 6,000px

  • Maximum number of characters in alt text: 1,000

Animated GIF

  • Maximum number of files: 1

  • Maximum file size: 15 MB

  • Maximum dimensions: 1,280px x 1,080px


  • Allowed extensions: mp4, mov, m4v

  • Maximum number of files: 1

  • Maximum file size: 512 MB

  • Minimum duration and maximum duration: 0.5 seconds to 140 seconds (10 minutes with ProMediaApi)

  • Minimum dimensions: 32px x 32px

  • Maximum dimensions: 1920px x 1920px (2,160px with ProMediaApi)

  • Aspect ratio: from 1:3 to 3:1 (0.33 to 3)

  • Maximum frame rate (frames per second): 60 FPS

  • Video codec: H264, progressive scan, 4:2:0 chroma subsampling

  • Audio codec: AAC with low complexity profile, max. 2 audio channels

  • Thumbnail:

    • Allowed extensions: jpeg, png

    • Maximum file size: 5 MB

Additional publishing options

  • Mention any Twitter profiles by using: "@" (there is autocomplete)

  • Label

  • Scheduling

  • Uploading cloud-shared assets directly from cloud storage applications

  • Pro Media API Support

To learn more, see Content Options in Publisher.

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