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Facebook Publishing

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

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

Text

Text properties

Guidelines

More information

Maximum number of mentions (@username)

50

Only Facebook business pages can be mentioned. If the page does not have a username set, then you cannot mention the page.

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

Link properties

Guidelines

More information

Maximum number of links

1

-

Link title character limit

1 to 255

The link title and thumbnail for the post are created from information provided by the target web page. Without domain verification in Meta Business Manager, Publisher is unable to change the link title or thumbnail.

Thumbnail

  • Maximum image dimensions: 30,000px x 30,000px

  • Maximum file size: 10 MB

Photo

Before publishing a post, Facebook removes all location metadata from photos and resizes them to different dimensions to better support rendering the image in multiple sizes.

Photo properties

Guidelines

More information

Allowed extensions

jpg, jpeg, png, bmp, tif, tiff, gif

-

Maximum number of files

  • 200 of any combination of supported file types.

  • 1 animated gif

A gif renders as a static image when it is uploaded with more than one file. Upload a gif by itself to render the animation.

Maximum file size

10 MB

-

Maximum image dimensions

30,000px x 30,000px

-

Maximum total pixel size

80,000,000px

-

Alt text character limit

5,000

-

Carousel properties

Guidelines

More information

Allowed extensions

jpg, jpeg, png, bmp, tif, tiff, gif

  • Animated gif files are not supported.

  • Videos are not supported.

File count

2 to 10

To preserve the order of the files in your carousel, upload a maximum of 5 files.

Maximum file size

8 MB

-

Reels

It is not possible to use the Emplifi Mobile app to publish Facebook reels. However, published Facebook reels do appear in the mobile feed.

Reel properties

Guidelines

More information

Allowed extensions

.mp4 (recommended), .mov

.mov files may experience issues passing validation due to how the format stores aspect ratio/resolution information. Meta recommends using .mp4.

Maximum number of files

1

Maximum file size

1

Minimum and maximum duration

3 to 90 seconds

Resolution

  • 1080 x 1920 pixels (recommended)

  • 540 x 960 pixels (minimum)

Aspect ratio

9:16 (0.56 - 0.6)

FPS (frames per second)

24 to 60 FPS

Video settings

  • Chroma subsampling 4:2:0

  • Closed GOP (2-5 seconds)

  • Compression – H.264, H.265 (VP9, AV1 are also supported)

  • Fixed frame rate

  • Progressive scan

Audio settings

  • Audio bitrate – 128kbs+

  • Channels – Stereo

  • Codec – AAC Low Complexity

  • Sample rate – 48kHz

Thumbnail

  • Allowed extensions: jpeg

  • Maximum file size: 8 MB

  • You can also select a frame from the video.

Use the Edit asset option to customize the video thumbnail in Publisher.

Video

Video properties

Guidelines

More information

Allowed extensions

avi, mpeg, mp4, ogg, mov, qt, webm, wmv, flv, m4v

-

Maximum number of files

1

-

Maximum file size

1 GB

-

Video description character limit

255

-

Thumbnail

  • Allowed extensions: jpeg, png

  • Maximum file size: 10 MB

Use the Edit asset option to customize the video thumbnail in Publisher.

Story (Auto-publishing)

It is not possible to use the Emplifi Mobile app to publish Facebook stories. However, published Facebook stories do appear in the mobile feed.

Story properties

Guidelines

More information

Maximum number of files

1 photo or video asset

-

Resolution

  • 1080 x 1920 pixels (recommended)

  • 540 x 960 pixels (minimum)

-

Aspect ratio

9:16 (0.56 - 0.6)

-

Photos

  • Allowed extensions: .jpeg, .bmp, .png, .gif, .tiff

  • Maximum file size: 4 MB

For .png files, Meta recommends not exceeding 1MB or the image may appear pixelated.

Videos

  • Allowed extensions: mp4 (recommended), mov

  • Maximum file size: 100 MB

  • Minimum and maximum duration: 3 to 60 seconds

  • FPS (frames per second):
    24 to 60 FPS

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

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

  • Maximum audio bitrate: 128kbps

.mov files may experience issues passing validation due to how the format stores aspect ratio/resolution information. Meta recommends using .mp4.

Additional Publisher options

  • Branded content

  • Targeting: Gating and Feed targeting

  • Label

  • Dark posts
    (info) Dark posts cannot be scheduled. The Publish date must be Now.

  • Mention pages: using "@" (there is autocomplete)

  • Scheduling

  • Scheduling with PrimeTime AI Recommendations

  • Uploading cloud-shared assets directly from cloud storage applications

  • Schedule directly on Facebook and generate a post ID.
    To learn more, see Scheduling Options.

  • Additional video options (no story, secret, social actions)
    (warning) Not available for reels

To learn more, see Content Options in Publisher.

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