A title or body placeholder in Google Slides can reduce its text size automatically when the content becomes too long. If you need to keep the chosen typography stable, change that placeholder’s text-fitting setting. Turning off shrinking does not make excess content fit by itself.
Inspect the selected placeholder
Open the slide on a computer and select the affected text placeholder. Compare the font size with a neighboring slide using the same layout. Confirm that the problem is automatic text fitting rather than a different theme font or a smaller editor zoom.
Disable automatic fitting
Choose Format > Format options > Text fitting, or right-click the placeholder and open its text-fitting controls. Select Do not autofit. Google’s guidance distinguishes this from Shrink text on overflow, which is the normal default for theme text placeholders.
After changing the setting, shorten the text, enlarge the available area, or divide the explanation across slides as needed. A stable font size can reveal an overcrowded layout that automatic shrinking previously concealed.
Verify the audience result
Click outside the text and inspect its bottom line, punctuation, source credit, and edges. Present the slide to check whether the complete message is visible and readable. Revisit the setting after adding more material or changing the box dimensions. This adjustment applies to the selected box; changing preferences for future text boxes is a separate operation. If a team requires a minimum readable text size, review actual content density rather than assuming a no-autofit setting alone enforces that editorial standard.
References
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.