I'm trying to extract the account part of email in a person column ("created by" or Author). I want to the account part so I can concatenate a text for form an URL, such as http://somesite.com/jdoe.jpg if, for instance, the author's email is [email protected].

Following the Microsoft documentation, I tested this:

"txtContent":"=replace([$Author.email], '@email.com', '.jpg')"

The result just displayed the full email ('[email protected]'). Any reason why this doesn't work?

Incidentally, I tried an alternative with the split operator, as in:

"txtContent":"=split([$Author.email], '@')"

This return the following:


But I couldn't replace the separating comma either. I would appreciate any ideas on how I can get what I'm looking for.

1 Answer 1


Maybe there is some issue with replace operator in SharePoint JSON formatting at Microsoft end.

Instead of replace operator, try using replaceAll operator.


  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "txtContent": "='http://somesite.com/' + replaceAll([$Author.email], '@contoso.com', '.jpg')"

Reference: SharePoint: Replace All Occurrences of Substring in a String using JSON Formatting


enter image description here

Also, make sure you have included/shown Created By column in list view.


replace operator in JSON formatting also works, but you have to convert Author email to string explicitly like:

  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "txtContent": "='http://somesite.com/' + replace('' + [$Author.email] + '', '@contoso.com', '.jpg')"

Where Author is internal name of SharePoint default Created By column. You can get internal name of any SharePoint list column by following this article: How to find the Internal name of columns in SharePoint Online?

  • 1
    ah, gotcha. This worked. Thanks a lot
    – Wal
    Jun 3, 2023 at 16:15

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