What is file id in Google Sheets?

File Id is an identifier or URL parameter for Google Sheets files, tabs, or linked forms. Developers and power users need these IDs for IMPORTRANGE, API calls, and prefilled form links.

When to use it

Use IDs and URL parameters when scripting, embedding, or linking directly to a tab or form field.

When to skip it

Skip raw IDs for casual sharing when a normal share link or named range is enough.

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