Each social network has its own specific features to obtain an optimal display of the visuals shared on its platform. From Facebook to Instagram, via Twitter and LinkedIn, an SME must adapt its visuals for each network in order to obtain the best possible rendering and engagement …


Whether it’s sharing an illustration image to accompany a marketing message associated with an offer, an illustration image for the account, a product photo or an image that will have a vocation purely inspirational, what are the best practices to follow by social network? Throughout this article we offer you some practical tips as well as concrete examples from the social media strategy of the French SME Bio c’Bon.

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Optimizing images shared on Facebook

With 33 million active users in England, Facebook is by far the most used social network in England. SMEs who want to optimize their communication on social networks can therefore hardly miss a presence on the social network Mark Zuckerberg.
Here are some best practices for optimizing images shared via a Facebook page and thus ensuring the best possible rendering:

  1. Prefer the .png format to the .jpg format to obtain less pixelation of the image when it is shared on Facebook;
  2. Prefer, if possible and without altering the quality of the visuals, images of less than 100kb to optimize their display time for Internet users with slow connections on mobile and computer;
  3. Optimize the dimensions of the images according to the type of publication produced:
    • 1200 x 628 pixels for an image illustrating a link (organic publication or sponsored in the newsfeed);
    • 1200 x 630 pixels for a shared landscape format image only;
    • 960 x 960 pixels for a shared square format image alone;
    • 600 x 600 pixels for images inserted in a carousel publication.

Here is an example of a Facebook publication by Bio c ’Bon which shares a square format image (960 x 960 pixels) in .PNG format to obtain a perfect rendering, without pixelation, on all terminals:

Optimize images published on Instagram

Since its takeover by Facebook, Instagram has experienced rapid growth and has now reached the 800 million active users worldwide each month! Although Instagram allows video sharing, the social network co-founded by Kevin Systrom is, along with Pinterest, the main social network dedicated to image and photo communication.
Here are some best practices for optimizing images shared via Instagram and thus maximizing their potential impact:

  1. Prefer square format to landscape format: images shared in square format are clearly more visible in the user thread, because they take on average nearly 1.9 times more space than a photo shared in landscape format. Instagram recommends sharing images in 1080 x 1080 pixel format for better rendering on all devices;
  1. Opt for visuals that share an experience, appeal to emotion or tell a story: these visuals are the ones that get the most engagement on the network;
  2. Add hashtags related to the published image: Instagram allows up to 30 hashtags per publication.

Here is an example of an Instagram post from Bio c ’Bon that shares a lived experience in one of these stores in the form of a square photo:

Optimizing images shared on Twitter

While Twitter, with its 330 million users worldwide, is very popular with marketers for its CRM functionality, the social network is also very popular for sharing illustrated news.
To optimize the images and photos shared on Twitter, here are some good practices to follow:

  1. Just like on Facebook and Instagram, images and photos shared in square format are the ones that get the most visibility in the Twitter news feed;
  2. Twitter recommends opting for 1024-pixel-wide images for the best rendering on all devices.

Here is an example of posting Bio c ’Bon on Twitter that shares a square image:

Optimizing images shared on LinkedIn

With its more than 500 million users, LinkedIn, the most professional of social networks, offers a very attractive showcase for SMEs that operate in a sector rather oriented B2B.
To optimize the images shared on the social network co-founded by Reid Hoffman, here are some good practices:

  • Choose a .JPG or .PNG format;
  • Share images in landscape format of 1200 x 627 pixels to get the best possible rendering on all devices.

As you can see, each social network has its own good practices in order to optimize the final rendering of shared visuals. Some image banks like Istock also allow their users to edit purchased visuals directly online in order to optimize them for each social network. The iStock Editor functionality notably offers its users the possibility of resizing images to ideal dimensions for Facebook, Instagram, Twitter and Pinterest with one click. The interface goes even further by allowing you to apply filters, add text or even resize the visuals to the precise dimensions you want.