Shrink text on overflow keeps a Google Slides text container’s area stable by reducing the text size when necessary. It can help with a short last-minute addition, but it can also produce a slide that is technically filled and difficult to read. Use it with a deliberate readability check.
Choose the target placeholder
Open the slide on a computer and select the relevant text area. Check its intended boundaries and the amount of content it contains. If the slide has several unrelated text boxes, identify the one actually changing size rather than adjusting every container.
Enable the fitting option
Choose Format > Format options > Text fitting and select Shrink text on overflow. Google’s guidance describes this as the default for theme text placeholders. It differs from growing a text box and from leaving automatic fitting disabled.
Edit the wording and watch the resulting typography. If a small addition causes a noticeable reduction, consider shortening the sentence instead. Automatic fitting should not be used to avoid deciding which information belongs on the slide.
Check the smallest text
Present the slide and compare its body text with neighboring slides. Read the final bullet, long labels, and any deeply indented lines. If they are no longer comfortable to read, divide the content or move detail into your spoken explanation. The setting controls layout behavior, not comprehension. Recheck it after later edits because a placeholder that looked acceptable earlier can shrink further when another contributor adds a paragraph or a long source label.
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.