In Google Sheets, a Spreadsheet ID is a unique identifier assigned to every spreadsheet ID is an identifier that’s unique to a Spreadsheet.
You can find this ID directly in the spreadsheet’s URL. It is the string of characters located between /d/ and /edit.
Example URL:
https://docs.google.com/spreadsheets/d/1Vq2Q9FIBj_ut7ZMLwX1Vq2Q9FIBj_ut7ZMLwX-hpjd/edit#gid=0
Spreadsheet ID:
1Vq2Q9FIBj_ut7ZMLwX1Vq2Q9FIBj_ut7ZMLwX-hpjd
This ID is commonly used when working with Google Sheets APIs, Apps Script, or integrations that require direct access to a specific spreadsheet.