Content format

1. TikTok Publishing

TikTok Post: video up to 4GB and 10 mins: MP4-recommended, WebM, Mov and 1080 x 1920 px.
Important Note: When posting on TikTok, the platform only displays the content written in the title field. Ensure to include all necessary details in the title to communicate your message effectively.

2. YouTube Publishing

YouTube Post: video up to 10GB.
YouTube Shorts are automatically published. Shorts can be up to 60 seconds in length. Videos must have a vertical orientation with a 9:16 aspect ratio.
Add 1st comment to YouTube posts (also known as Description).

3. Facebook Publishing

Facebook First Comment: Publish the First Comment on Facebook posts.
Multiple Images & Videos, Links.
Facebook Carousel Post supports up to 10 images and image links.
Facebook Stories Post supports up to 10 images.
Supports Image and Video upload via Links.
Note: You cannot publish images and videos at the same time on Facebook. If combined, only the video will be published, as the API will remove the image.

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.

For full specifications, please check the link: Facebook Image specificationNote that uploading via Postly is managed by the Facebook API and may provide a different experience than uploads via Facebook platforms.

Facebook Video:

Facebook video post: Max size 10GB. Max length 4 hours

Facebook Reels:

Facebook Reels: Max size 10GB. Max length 90 secs. Format 1080 x 1920 px

Facebook Stories:

Facebook Stories: Max size 10GB. Max length 60 secs. Format 1080 x 1920 px
Facebook Stories Carousel: You can publish multiple images, up to 10 images can be published.

Facebook Carousel:

Now you can publish up to 10 images with associated links to help boost your business awareness and sales.

4. Threads Publishing

Threads Posts and Replies

Text posts are limited to 500 characters.
The API posts all replies after 15 - 30 seconds of publishing the main content.

Threads Image Posts:

Format: JPEG and PNG image types are the officially supported formats for image posts.
File Size: 8 MB maximum.
Aspect Ratio Limit: 10:1.

Threads Video Posts:

File Size: 1 GB maximum.
Duration: 300 seconds (5 minutes) maximum, minimum longer than 0 seconds.

5. Instagram Publishing

Instagram First Comment:

Publish First Comment on Instagram posts.

Instagram collaborator

1. Inviting a Collaborator:
Create your Instagram Feed post or Reel. Use the input field to search and tag collaborators. You can add up to 3 collaborators. Once done, share the post, and your collaborators will receive an invite.

2. Accepting a Collab Request:
Collaborators will get a notification. They can review and tap Accept to have the post appear on their profile.

Instagram Image Post:

For full specification, please check the link: Instagram Content Specification
Instagram Carousel Post with up to 10 images.
Format: Postly accepts standard image formats.
File Size: 8 MB maximum.

Instagram Video Post:

Instagram video Post: Max size 1GB. Min length 3 secs. Max length 15 mins. Format 1080 x 1080 px

Instagram Reels:

Instagram Reels: Max size 10GB. Max length 90 secs. Format 1080 x 1920 px

Instagram Stories Image:

Format: Postly accepts standard image formats.
File Size: 8 MB maximum.

Instagram Stories Video:

Instagram Stories video: Max size 100MB. Max length 60 secs. Format 1080 x 1920 px.

6. Twitter publishing

Twitter Post: video up to 512MB, min 0.5 secs, max 140 secs.
Images up to 5MB.
You can upload up to 4 Images per tweet. If you have a Thread, then each tweet on the Thread can contain 4 images.
Publish Single Tweets and Threads. Threads are automatically generated - user can edit on Preview page.
Publish Twitter Polls.

7. Bluesky publishing

Bluesky Post: text, images and videos.
Text content has a limit of 300 characters.
Tag users. To tag a user on Bluesky, you need to add the full account link e.g. @postly.bsky.social
Add hashtags.

8. LinkedIn publishing

LinkedIn Post: video up to 5GB.
Publish up to 9 Images per post.
Images up to 5MB.
Publish Polls.

9. Google Business Profile publishing

Publish only one image at a time.
Does not allow video posts at the moment due to API restrictions.

10. Pinterest publishing

Publish Images and Videos.
Supported media formats: MP4-recommended, WebM, Mov.

11. Reddit publishing

Publish Images and Videos.
Reddit will publish a post description message if ONLY a text post was made.
If you make a text and image or video post, Reddit will remove the text and publish the image or video.
Supported media formats: MP4-recommended, WebM, Mov.

12. Telegram publishing

Publish Images and Videos.
Publish a maximum of 9 images per post.
Supported media formats: MP4-recommended, WebM, Mov.
Publish content via the default @postly_bot.
Publish content via a customized Telegram Bot (check Telegram platform connection page to customize a bot).