For a content marketing campaign, knowing exactly what kind of image and video format to post and how often is absolutely important. Here are the best sizes for sharing images on social media:

Image

Format
Maximum File Size
Aspect Ratio
No. of Images
MultiMedia 
Facebook Pages and Group
PNG JPG GIF
10MB
Recommended – need to keep the Width*Height – 1280 x1080

Minimum
600 x 315 pixels
Unlimited Image(s) – Recommend to post 10 Image(s) or less
Not Allowed
Instagram
Business Profile
PNG JPG
8MB
Square, or between 1.91:1 and 4:5
Landscape: 1080 x 566 pixels
Portrait: 1080 x 1350 pixels
Square: 1080 x 1080 pixels
10 Image(s)
Multimedia format is allowed for carousal- can add image(s) and video(s) together.
Linkedin Profile and Pages
PNG JPG GIF
8MB
Maximum
6012 pixels x 6012 pixels
9 Image(s)
Not Allowed
Twitter PNG JPG GIF 5MB

Recommended – need to keep the Width*Height – 1280 x1080
 4 Image(s) Not Allowed
Tiktok – – – –
GMP
PNG JPG 
10MB
Must be greater than Width*Height – 720*720

Maximum
Width*Height – 3000*3000
1 Image
Not Allowed

Notes
1) Multimedia format - Posting Image(s) and Video(s) together in a single post 2) As you experiment with different kinds of images, only then you'll realize which works best     for your brand. By default, these two sizes are impeccable
Horizonatal (landscape): 1,024 pixel X 512 pixel Vertical (portrait): 800 pixel x 1,200 pixel

Video

Format
Maximum File Size
Duration
Aspect Ratio
No. of Video
MultiMedia
Facebook Pages and Group
MP4  MOV
1 GB
1 sec – 20 mins
Between 16:9 and 9:16
1 Video
Not Allowed
Instagram
Business Profile
MP4 MOV
100 MB
3 sec – 60 sec
Between 4:5 and 16:9
10 Video(s)
Multimedia format is allowed for carousal- can add image(s) and video(s) together
Linkedin Profile and Pages
MP4  MOV
200 MB
3 sec – 30 mins
Between 1:2.4 and 2.4:1
1 Video
Not Allowed
Twitter MP4  MOV
512 MB		 0.5 sec – 140 sec
Between 1:3 and 3:1
 1 Video
Not Allowed
Tiktok  MP4 50 MB 3sec – 60 sec 540 pixel resolution 1 Video Not Allowed
GMP
–
–
–
–
–
Not Allowed

Content Length – 

Content Length
Facebook Pages and Group
 62000 character
Instagram
Business Profile

Reel 

Story

 2200 character

2200 character

0 character
Linkedin Profile and Pages
 3000 character
Twitter 280 character
Tiktok Personal

Tiktok Business

 150 character

2200 character
GMP
 1500 character

Current Rate Limits based on platforms per active user:

  • Google – 300/min
  • Facebook – 200/hr
  • Instagram – 200/hr
  • TikTok – 15/day
  • Twitter – 100/hr
  • LinkedIn – 150/day

OG Meta Tag is available in all platforms except Instagram, Tiktok and Youtube