Finally I found all the specs for Sizes and Dimensions for Facebook Timeline. I’ve been always searching for this evertyme I had to plan a campaign on Facebook. For this reason, I write this post. Stop losing time and be more effective in your social media campaigns!

Cover Photo for Timeline

This is the big image (also known as cover photo) for Facebook’s timeline.
Width: 851px
Height: 315px

Application Icons for Timeline View

If your picture exceeds these limits, your icon will be re-sized and converted.
Width: 107px
Height: 70px
Maximum file size: 5MB

Profile Picture for Timeline Pages

Recently updated sizes for timeline. The new width and height are 180 px which will be automatically scaled down to following:
Width: 32px
Height: 32px
It’s extremely important to choose a picture that can be scaled down as the profile pictures that are displayed on timeline posts are really small. Best practice is to choose the logo.

Facebook Application Favicon Size

This is the tiny icon that is being displayed on the left hand side of your news feed, where the applications that you use are.
Width: 16px
Height: 16px

Facebook Page Applications (Formerly Facebook Tabs)

The usable area of a brands Facebook page
Width: 779px (Update: The CSS of Facebook has some errors, so we’re not actually sure what the final width will be. We suspect it will be 810 px)
Height: Unlimited

Facebook Milestone Picture Size

This is the size you use for milestone pictures such as company’s foundation date. This is also the size for starred (highlighted) posts. The image in the post will be scaled down accordingly, if it exceeds the limits.
Width: 843 pixels
Height: 403 pixels

Thumbnail

The image that is displayed next to the link when you click like or share somenthing.
Width: 90px
Height: 90px

Uploaded images

This is the maximum size of the image you can upload.
Width: 2048px
Height: 2048px

Pinned post picture size

This is the size of the picture of your pinned post. It will not be scaled down, Facebook will take the center of the image and cut it out accordingly.
Width: 403px
Height: 403px

Pictures displayed in Facebook

This is the maximum size of the image as shown in slide show or album.
Width: 960px
Height: 720px

Facebook ads

Picture in the ad
Width: 110px
Height: 80px
Size: 5MB

Text in ad
Header: 25 characters
Body copy: 135 characters

Facebook status update

Status update length: 63,206 characters
Comment length: unlimited

Video

The maximum size of video you can upload
Size: 1024MB
Length: 20 minutes

Facebook timeline specs Sizes Dimensions

Via: Fresh Buzz Media