Table of contents:
Click on a Social Network to have a quick access to the information:
Instagram 
Feed
Image format: JPEG, PNG and Webp
Image size: 8MB maximum
Aspect ratio: Must be within a 4:5 to 1.91:1 range
Minimum image width: 320px (will be scaled up to the minimum if necessary)
Maximum image width: 1440px (will be scaled down to the maximum if necessary)
Image color space: sRGB. Images using other color spaces will have their color space converted to sRGB
Image amount: 10 maximum
Image color space: sRGB. Images using other color spaces will have their color space converted to sRGB
Video duration: 60 seconds maximum
Video amount: 10 maximum
Video duration: 3-sec minimum, 60-sec maximum
Video size: 100MB maximum
Maximum width: 1920 px
Aspect ratio: between 1.91:1 and 9:16
Container: MOV or MP4 (MPEG-4 Part 14), no edit lists, moov atom at the front of the file.
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.
Frame rate: 23-60 FPS.
Video bitrate: VBR, 25Mbps maximum
Audio bitrate: 128kbps
Copy size: 2,200 characters maximum
Hashtags: Máximum of 30 in total
No GIFs are allowed
No combination of videos and images is allowed
Reels
Maximum width: 1920 px
Aspect ratio: between 1.91:1 and 9:16
Hashtags: Máximum of 30 in total.
Videos amount: 1 maximum
Video duration: 3 seconds minimum, 15 mins maximum
Video size: 1GB maximum
Container: MOV or MP4 (MPEG-4 Part 14), no edit lists, moov atom at the front of the file.
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.
Frame rate: 23-60 FPS.
Video bitrate: VBR, 25Mbps maximum
Audio bitrate: 128kbps
Copy size: 2,200 characters maximum
Hashtags: Máximum of 30 in total
No GIFs or Images are allowed
Cover Image
Format: JPEG and PNG
File size: 8MB maximum
Color Space: sRGB. Images that use other color spaces will be converted to sRGB.
Aspect ratio: We recommend 9:16 to avoid cropping or blank space. If the aspect ratio of the original image is not 9:16, Instagram crops the image and use the middle most 9:16 rectangle as the cover photo for the reel. If you share a reel to your feed, Instagram crops the image and use the middle most 1:1 square as the cover photo for your feed post.
Story
Format: JPEG, PNG and Webp
Image size: 8MB maximum
Aspect ratio: Must be within a 4:5 to 1.91:1 range
Minimum image width: 320px (will be scaled up to the minimum if necessary)
Maximum image width: 1440px (will be scaled down to the maximum if necessary)
Image color space: sRGB. Images using other color spaces will have their color space converted to sRGB
Images amount: 1 maximum per story (you can do a series of stories)
Videos amount: 1 maximum per story (you can do a series of stories)
Video size: 100MB maximum
Video duration: 3-sec minimum, 60-sec maximum
Maximum width: 1920px
Aspect ratio: between 0.1:1 and 10:1 but we recommend 9:16 to avoid cropping or blank space
Container: MOV or MP4 (MPEG-4 Part 14), no edit lists, moov atom at the front of the file.
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.
Frame rate: 23-60 FPS.
Video bitrate: VBR, 25Mbps maximum
Audio bitrate: 128kbps
Facebook 
Feed
Image file type: JPEG, PNG, Webp and GIF
Image size: 8MB maximum (1MB maximum recommended for PNG and 4MB maximum recommended for the rest)
Images amount: 10
Videos amount: 1
Video size: 1GB maximum
Video duration: 3 sec minimum, 20 min maximum
Video file type: MOV, MP4 or AVI
Video dimensions: 1280 x 720 pixels for landscape and portrait mode.
Minimum width: 1200 pixels (length depends on aspect ratio) for landscape and portrait mode.
Aspect ratio: between 9:16 and 16:9
Audio bitrate – 128kbs+
Channels – Stereo
Codec – AAC Low Complexity
Sample rate – 48kHz
Text length: 60,000 characters maximum
No combination of videos and images is allowed
Reels
Video Format: MP4 or MOV
Video aspect ratio: 9:16
Maximum video width 1920 px
Minimum video dimension: 540 x 960 px
Video amount: 1
Video size: 1GB maximum
Video duration: 3 sec minimum, 20 min maximum
Audio bitrate – 128kbs+
Channels – Stereo
Codec – AAC Low Complexity
Sample rate – 48kHz
Text length: 60,000 characters maximum
No GIFs or Images are allowed
Story
Image file type: JPEG, PNG, Webp and GIF
Image size: 8MB maximum (1MB maximum recommended for PNG and 4MB maximum recommended for the rest)
Video format: MP4 or MOV
Video aspect ratio: 9:16
Maximum video width 1920 px
Minimum video dimension: 540 x 960 px
Video duration: 3-60 seconds
Audio bitrate – 128kbs+
Channels – Stereo
Codec – AAC Low Complexity
Sample rate – 48kHz
No GIFs allowed
TikTok 
Copy length: 2,200 characters maximum
Videos amount: 1 maximum
Video size: 4GB maximum
Video duration: 3 sec minimum, 10 min maximum
Video file type: MOV, MP4 or WEBM
No GIFs or Images are allowed
No combination of videos and images is allowed
X - Twitter 
Text length: 280 characters maximum (limited for 3rd parties platforms regardless of whether it is a premium or regular account)
Images amount: 4 maximum
Image size: 5MB maximum
Image file type: JPG or PNG
Videos amount: 1 maximum
Video size: 512MB maximum
Video duration: 0.5-sec minimum, 140-sec maximum
Video file type: MOV or MP4
GIFs amount: 1 maximum
No combination of videos/gifs and images is allowed
Pinterest 
Title length: 100 characters maximum
Description length: 500 characters maximum
Images amount: 5 images maximum
Image size: 32MB maximum
Image file type: JPG or PNG
Videos amount: 1 video maximum
Video size: 2GB maximum
Video duration: 4-sec minimum, 15 min maximum
Video Format: MP4, MOV or M4V
Video Encoding: H.264 or H.265
Video aspect ratio: Shorter than 1:2 (width:height), taller than 1.91:1. We recommend making your videos square (1:1) or vertical (2:3, 9:16).
No GIFs are allowed
No combination of videos and images is allowed
LinkedIn 
Text length: 3,000 characters maximum
Images amount: 9 images maximum
Image size: 8MB maximum
Image file type: JPG or PNG
Videos amount: 1 video maximum
Video size: 200MB maximum
Video duration: 3 sec minimum, 10 min maximum
Video file type: MP4, AVI, ASF, FLV, MKV, WEBM or Quicktime
No GIFs are allowed
No combination of videos and images is allowed
Medium 
Title length: 100 characters maximum
Description length: 10,000,000 characters maximum