Google Docs API placeholder replacement can affect all tabs by default. Specify a tab selection when a template value should change only in selected parts of a document.
Inspect the template and scope
Use distinctive placeholders such as {{client-name}} rather than a common word that could appear in ordinary prose. Read the template and identify every intended occurrence before replacing. Do not replace a placeholder inside quoted examples unintentionally.
Generate into an appropriately controlled copy when the master template must remain reusable. Copying the file and changing its contents are separate operations with separate verification needs.
Limit the replacement to intended tabs
A schematic subrequest uses this structure:
{"replaceAllText":{"containsText":{"text":"{{client-name}}","matchCase":true},"replaceText":"Example Client","tabsCriteria":{"tabIds":["REAL_TAB_ID"]}}}Replace the sample values and tab ID with validated inputs. Google documents replaceAllText as an exception to the usual first-tab default: omitting its tab criteria applies the replacement across all tabs.
Verify matches and remaining placeholders
Inspect the replacement result and reread the affected tabs. Search for unresolved placeholders and confirm that excluded tabs remain unchanged. A match count alone does not prove every changed occurrence was appropriate.
Check surrounding grammar, dates, names, and repeated values before delivery. A template can produce polished-looking but incorrect documents when the input data is wrong. Test the workflow on controlled sample content and use appropriate state protection. Keep source-template identity, output-copy identity, replacement scope, and the final reviewed artifact explicit rather than treating one successful batch response as a complete document-generation audit.
References
- Merge text into a document | Google Docs | Google for Developers
- Work with tabs | Google Docs | Google for Developers
Reviewed against the linked official product guidance on November 3, 2026. Features, limits, screen labels, and access can vary by account, platform, region, and organization policy.