Sizing specifications

To get the best quality of user interface in your event pages, we recommend using the following sizing specification for your images. If not using the following ratios, the images may be distorted.

  • Event cover image: 820px x 410px (ratio 2:1)
    • The AttendeeLink image will use the same ratio.
  • Session cover image: 810px x 250px (ratio 3:1)
  • Speakers & Attendees avatar image: 128px x 128px (ratio 1:1)
  • Sponsor logo image: 320px x 128px (ratio 2.5:1)

Image sources

URL link needs to be HTTPS, not HTTP

There are two kinds of images you may set in events (Salesforce).

  1. Images in string fields
  2. Images in rich text fields

Public images

You can always use a public image from third parties if they allow you to use the images out of their platform, such as imgur.

Classic UI:

  1. Paste the public image URL into a string field directly.
  2. Use the public image URL in a rich text field, like this:

Lightning UI

  1. Paste the public image URL into a string field directly.
  2. Unfortunately, Lightning UI doesn't provide a way to use a third party image URL in rich text fields.

Uploading Images

Blackthorn supports a few methods of uploading images.

  1. Salesforce Documents
  2. Google Drive
  3. Dropbox

To upload from Salesforce Documents

  1. Navigate to Salesforce Classic and open Documents
  2. Upload a new document
  3. Make sure Externally Available Image is marked True
  1. Right click the image you just uploaded, and select "Copy Image Address"
  2. Paste the image address into the Image URL field on your Event, or wherever else you'd like to use it!

To upload from Google Drive

  1. Upload your image
  2. Set sharing rules to be "Anyone on the internet with this link can view"
  3. Click "Copy link" and add it to your event! 😎

To upload from Dropbox

  1. Upload your image
  2. Ensure "Who this link will work for" = "Anyone"
  3. Click "Copy link" and add it to your event!


Q: Do you support Salesforce Files?
A: At this time, Salesforce Files is not supported.

Q: Do you support image versioning?
A: At this time we do not. When inserting a new URL, please ensure it is a unique URL. This will allow the image to update properly on the event.

Q: Are there any size or file type limitations?

  • Size of 100 MBs
  • Files formats supported include .docx, .pdf, .ppt, .pptx, .xls, and .xlsx
  • All image files are supported including .gif, .jpg, and .png

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