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Content Format

Please adhere to these content rules to ensure good experience.


Publishing the same content on multiple platforms:

You can publish the same video for all platforms because the platforms have a similar video-format range. However, Instagram and TikTok are very sensitive and you have to meet their specific video-format requirements as specified below:

We recommend that you always use the Preview page to manage content on the different platforms before publishing.

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Facebook post types.

Multiple Images & Videos, Links.

Facebook Carousel Post with up to 10 images and image links.

Supports Image and Video upload via Links.

At the moment, you cannot publish images and videos at the same time on Facebook. If you combine them, then only the video will be published. as the API will remove the image.

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Facebook image types.

The image must be less than 8MB in size. Format: JPEG, PNG, GIF.

Image formats: PNG, JPEG, GIFs, etc. You can publish up to 10 images in one post.

Aspect ratio: Must be within a 4:5 to 1.91:1 range.

Minimum width: 320 - will be scaled up to the minimum if necessary.

Maximum width: 1440 - will be scaled down to the maximum if necessary.

For full specification, please check the link: Facebook Image specification. Please note that uploading via Postly is managed by the Facebook API and will provide a different experience than upload via the Facebook platforms.

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Facebook video.

For full specification, please check the link: Facebook Video specification. Please note that uploading via Postly is managed by the Facebook API and will provide a different experience than upload via the Facebook platforms.

Facebook accepts direct video URLs.This is an example of a direct Video URL: https://myvideo.com/cat.mp4

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Facebook features.

Instagram Icon Facebook Carousel: You can publish Facebook Carousel posts with up to 10 Images and links to the images.

Instagram Icon Facebook Personal profile: This feature is not allowed for direct publishing from the Web due to API restrictions. However, after publishing the post, you can use the Mobile app to Share to other channels including your profile.

Instagram Icon Facebook Reels: Facebook automatically publishes some posts as Reels, however, we are working on a standard process for Reels.

Instagram Icon Facebook Stories: This feature is not available yet.

Instagram Icon Facebook First Comment: This feature is not available yet.


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Instagram post types.

Multiple Images & Videos.

Instagram Carousel Post with up to 10 images.

At the moment videos cannot be included in a carousel post.

Image with a width of at least 1080 pixels with an aspect ratio between 1.91:1 and 4:5.

For full specification, please check the link: Instagram Image specification. Please note that uploading via Postly is managed by the Facebook API and will provide a different experience than upload via the Facebook platforms.

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Instagram Reels and Stories.

Video must be MP4 or MOV

Video for Instagram Reels and Stories must be 1080 x 1920px.

The maximum length of video for the Instagram Reel is 90 seconds while Instagram Stories is 60 seconds.

Note that Instagram Reels and Stories cannot be published at the same time..

In addition to the above, Instagram has introduced a new method of managing Reels as follows: All Instagram Video posts under fifteen minutes will be automatically published as Reels. Learn more

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Instagram features.

Instagram Icon Instagram Carousel: You can publish Instagram Carousel posts with up to 10 Images.

Instagram Icon Instagram Reels: Yes you can publish Instagram Reels

Instagram Icon Instagram Personal and Creator accounts: This feature is not allowed for direct publishing from the Web due to API restrictions. However, after publishing the post, you can use the Mobile app to Share to other channels including your profile.

Instagram Icon Instagram First Comment: This feature available.

Instagram Icon Tagging: This feature available.


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Twitter posting.

Instagram Icon Publish Single Tweets and Threads. Threads are automatically generated - user can edit on Preview page.

Instagram IconPublish Twitter Polls.

Instagram Icon Twitter video: keep the video length to 120 seconds and use MP4 video format only.

Instagram IconYou can upload up to 4 Images per tweet. If you have a Thread, then each tweet on the Thread can contain 4 images.

Instagram Icon Images should be less than 5MB. You can learn more: here.

Instagram Icon Tagging is available on Twitter.


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LinkedIn posting.

Instagram Icon Publish images and videos to Pages and personal profile. LinkIn Groups are not available yet.

Instagram IconPublish up to 9 Images per post.

Instagram IconImages should be less than 5MB in size while videos should be less than 30 minutes in length and not more than 200MB in size.

Instagram Icon Publish Polls.

Instagram Icon LinkedIn PDF Carousel: This feature is not available at the moment.


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TikTok posting.

Instagram Icon Supported media formats: MP4-recommended, WebM, Mov

Instagram Icon Duration restrictions: All TikTok creators can post 3-minute videos, while some have access to post 5-minute or 10-minute videos.

Instagram Icon Size restrictions: Maximum of 50MB.


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YouTube posting.

Instagram Icon YouTube accepts Video posts only

Instagram Icon YouTube Shorts: The Video file must be: a. maximum of 60 seconds. b. maximum of 2MB, with a square or vertical aspect ratio.Learn more


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Google Business Profile.

Instagram Icon Publish only one image at a time

Instagram Icon Does not allow video posts at the moment due to API restrictions


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Publishing Image and Video Links.

Instagram Icon Use direct link - that accesses the image or video directly: e.g. This is an example of a direct Video URL: https://myvideo.com/cat.mp4

Instagram Icon YouTube video URLs are NOT recommended for publishing to TikTok and Instagram. Please use other video platforms.

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