The id() function returns the current row’s page ID, or the page ID of a specified page. This page ID is a unique string.
id() id(page) page.id()
The page ID can also be found at the end of a Notion page’s URL (before any query strings starting with ?).
id() outputs a string that is guaranteed to be unique for each page in a database. It is possible for all other properties – including Name – to contain the same value in multiple rows.
Example Formulas
/* Page URL: <https://www.notion.so/thomasfrank/id-c5d67d15854744869cc4a062fb7b1377> */
id() /* Output: c5d67d15854744869cc4a062fb7b1377 */
prop("Related Pages").first().id()
/* Output: c5d67d15854744869cc4a062fb7b1377 */
Example Database
This example database uses the id() function and string concatenation to return the URL of each page within the database.
View and Duplicate Database
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“URL” Property Formula
"https://www.notion.so/" + id()
This formula concatenates the string “https://www.notion.so/” with the output of the id() function using the add operator.
Other formula components used in this example:
add – Thomas Frank
