Whether you're creating a new publication or editing an existing one, there are several types of images you can use in a publication.
All of these options are available by going to your publication's page, and clicking the "Edit" button.
1. Publication Avatar
Assign a publication avatar to be used in previews of your content throughout the site. The image must be square and a minimum of 60px by 60px.
2. Publication Logo (Story Pages)
Add a publication logo, which appears at the top of all your publication's stories. It is 72px tall and can have a maximum width of 600px.
3. Publication Homepage Logo & Background
Under Publication Homepage Layout, you can select a header size, upload a logo and if you choose the Large size header, add a background image.
Optimum Logo Image Size
We assume all logos are retina-ready, meaning that the logo is uploaded at twice the size we assume it will be displayed. If you upload a 2000px wide and 1000px high logo, Medium interprets it as 1000px wide and 500x tall. We do this so logos look great everywhere, from a mobile phone to a giant retina screen.
Logos scale down to fit inside your header if they are a larger resolution than the area we dedicate to logos, but logos that are smaller than the logo area won’t scale up.
With large headers only, you can also set a background image which will span horizontally across the page.
Choose "L" as header size, then click on "Add image" to upload a large, high-quality photo to use as a background image for your header.
Your title and/or logo will be overlaid on your background image.
Optimal background image size: While we require the image be at least 1500px wide and 750px high, we recommend you make the largest image possible with a 2:1 ratio (meaning it’s twice as wide as it is tall).
You can also set the focal point for cropping of your background image by clicking on the menu option marked "Background image":
Note: For best results with a logo on a background image as in the example above, use a .PNG format image saved with a transparent background.
Click on "Remove image" to delete your image.
Please see the full instructions for controlling publication layout.