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Character and media limits

Character and media limits for direct integrations: Facebook, Twitter, Instagram, LinkedIn, and Google My Business.


How to optimize your image sizes for social media channels

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Note: Those on the Hobbyist plan will be limited to uploading images of 30MB. Those on paid plans will not be limited.

Character and Media limits per social channel

Facebook

Character limit: 55000

Maximum images per post: 10

Image size limit: For those on the Hobbyist plan, the limit is 30MB. For those on paid plans, the limit is 250MB. ContentCal will automatically convert the dimensions of the chosen image to 1980px to make it valid for social media networks.

Maximum videos per post: 1

Video size limit: 250MB

Carousel publishing: Not possible. Publish a multi-image post instead via ContentCal, or post natively to Facebook.

Twitter

Character limit: 280

Maximum images per post: 4

Image size limit: For those on the Hobbyist plan, the limit is 30MB. For those on paid plans, the limit is 250MB. ContentCal will automatically convert the dimensions of the chosen image to 1980px to make it valid for social media networks.

Maximum video duration: 140s

Maximum video height: 1024

Maximum video width: 1028

Maximum GIFs per post: 1

GIF size limit: 4MB

Instagram

Direct publishing

Character limit: 2200

Minimum attachments per post: 1

Maximum images per post: 1 (JPEG or PNG)

Required aspect ratio for images: Must be within a 4:5 to 1.91:1 range

Minimum image width: 320

Maximum image width: 1440

Image height: Varies depending on image width and aspect ratio

Maximum file size for images: 8MB

Maximum videos per post: 1 (MOV or MP4)

Video duration: 60 seconds maximum, 3 seconds minimum

Video size limit: 100MB at maximum

Video bitrate: VBR, 5Mbps maximum

Audio bitrate: 128kbps

Audio codec: AAC, 48khz sample rate maximum, 1 or 2 channels (mono or stereo).

Video codec: HEVC or H264, progressive scan, closed GOP, 4:2:0 chroma subsampling.

Video frame rate: 23-60 FPS.

Video Picture size: Maximum columns (horizontal pixels): 1920 Minimum aspect ratio [cols / rows]: 4 / 5 Maximum aspect ratio [cols / rows]: 16 / 9

Maximum mentions per post: 20

Carousel publishing: Not possible. Either use the mobile app to publish a multi-image post, or publish your carousel natively to Instagram.

For more detailed information around image + video specifications, have a look at Facebook's guidelines.

Publishing via mobile app

Character limit: 2200

Minimum attachments per post: 1

Maximum images per post: 10 (JPEG or PNG)

Maximum file size for images: 250MB

LinkedIn

Character limit: 3000

Maximum images per post: 9

Image size limit: For those on the Hobbyist plan, the limit is 30MB. For those on paid plans, the limit is 250MB. ContentCal will automatically convert the dimensions of the chosen image to 1980px to make it valid for social media networks.

Maximum videos per post: 1

Maximum video size: 1

Video size limit: 200MB

Maximum gifs per post: 1

Gif size limit: Maximum of 250 frames

Google My Business

Character limit: For the 'Content' field the limit is 1500 characters. For the 'Title' field the limit is 58 characters.

Maximum media size: 10,000px x 10,000px (25MB)

Minimum media size: 250px x 250px

Maximum images per post: 1

Maximum videos per post: 0

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