When you type text into a PowerPoint text box or placeholder, the font size sometimes shrinks automatically to fit the text inside the shape. This behavior is controlled by a setting called AutoFit. While AutoFit can help prevent text from spilling out, it often creates inconsistent font sizes across slides and forces you to manually resize text later. This article explains why PowerPoint shrinks your text, how to turn off AutoFit permanently, and what to do if the fix does not stick.
Key Takeaways: Stop AutoFit and Keep Font Size Fixed
- File > Options > Proofing > AutoCorrect Options > AutoFormat As You Type > uncheck AutoFit title text and AutoFit body text: Disables automatic text shrinking for all new presentations.
- Right-click text box border > Format Shape > Text Options > Text Box > uncheck Shrink text on overflow: Turns off AutoFit for a single text box or placeholder.
- Set default text box style with Format Shape settings: Applies the no-AutoFit rule to every new text box you insert in the current presentation.
Why PowerPoint Shrinks Text Automatically
PowerPoint includes an AutoFit feature that reduces the font size of text when the text exceeds the boundaries of a text box or placeholder. This feature is enabled by default for title and body placeholders in slide layouts. The goal is to prevent text from overflowing outside the shape, keeping the slide visually tidy. However, AutoFit does not consider your intended font size. If you paste a long sentence into a small text box, PowerPoint may shrink the text from 24 points to 14 points without warning.
Where AutoFit Applies
AutoFit works in two contexts: text placeholders defined in the slide master and individual text boxes you draw on a slide. Placeholders inherit AutoFit settings from the slide layout. Text boxes you insert manually use the default shape settings, which also have AutoFit enabled. This means the shrinking behavior can appear in every slide element unless you disable it.
How AutoFit Interacts With Resizing
When you resize a text box by dragging its handles, PowerPoint does not automatically recalculate the font size. AutoFit triggers only when you type, paste, or edit text that makes the content exceed the shape boundary. If you enlarge the text box after AutoFit has already shrunk the text, the font size stays small — it does not revert to the original size. You must manually increase the font size or undo the AutoFit action.
Steps to Disable AutoFit Permanently for All Presentations
To stop PowerPoint from shrinking text in every new presentation, change the global AutoCorrect settings. This method applies to PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, and PowerPoint 2016.
- Open PowerPoint Options
Click File in the top-left corner, then click Options at the bottom of the menu. The PowerPoint Options dialog box opens. - Go to Proofing and AutoCorrect Options
In the left pane, select Proofing. Under the AutoCorrect section, click the AutoCorrect Options button. A new dialog box appears. - Open the AutoFormat As You Type tab
In the AutoCorrect dialog, click the AutoFormat As You Type tab. This tab controls settings that apply while you type. - Uncheck both AutoFit check boxes
Find the section labeled Apply as you type. Uncheck AutoFit title text to placeholder and AutoFit body text to placeholder. Click OK to close the AutoCorrect dialog, then click OK again to close PowerPoint Options.
This change affects all new presentations you create from this point forward. Existing presentations that were saved with AutoFit already active will not be updated. You must repeat the steps for each existing presentation or use the per-shape method described next.
Steps to Disable AutoFit for a Single Text Box or Placeholder
If you only need to stop text shrinking in one text box on one slide, use the Format Shape pane. This method also works for placeholders such as the title or content areas on a slide.
- Select the text box or placeholder
Click the border of the text box or placeholder so that the entire shape is selected, not just the text inside. You should see a solid border with sizing handles. - Open Format Shape
Right-click the border and select Format Shape from the context menu. Alternatively, go to the Shape Format tab on the ribbon and click Format Shape in the Shape Styles group. - Go to Text Options and Text Box settings
In the Format Shape pane, click the Text Options icon (the one with the letter A). Then click the Text Box icon (the second icon from the left under Text Options). - Change the AutoFit setting
Under the Text Box section, locate the AutoFit group. The default is Shrink text on overflow. Select Do not AutoFit. The text size immediately stops shrinking and any overflow text will be clipped or hidden.
After selecting Do not AutoFit, you may need to manually adjust the font size or the text box size to make all content visible. PowerPoint will not automatically resize either element.
How to Set Do Not AutoFit as the Default for All New Text Boxes
If you insert many text boxes in a presentation and want all of them to start with AutoFit disabled, change the default shape style for text boxes. This setting applies only to the current presentation, not to future presentations.
- Insert a temporary text box
Go to Insert > Text Box and draw a text box anywhere on a slide. Do not type anything yet. - Set the AutoFit option
Right-click the text box border, select Format Shape, and change the AutoFit setting to Do not AutoFit as described in the previous section. - Set as default text box
Right-click the text box border again. From the context menu, select Set as Default Text Box. Every text box you insert from now on in this presentation will use Do not AutoFit.
This method does not affect existing text boxes. It only changes the default for new insertions. To apply the setting to existing text boxes, you must select each one and change the AutoFit option individually.
What Happens When AutoFit Is Off
When you disable AutoFit, text that exceeds the text box boundary will overflow. PowerPoint hides the overflow text; it does not delete it. You can see the hidden text by selecting the text box and looking at the text cursor position. To make overflow text visible, you must either increase the font size of the text box or reduce the font size manually.
If you prefer that text boxes automatically resize to fit content without changing the font size, use the Resize shape to fit text option in the Format Shape pane instead of Do not AutoFit. This option expands the text box height or width so all text is visible at the font size you set. To enable it, select Resize shape to fit text under the AutoFit group in the Text Box settings.
Common Issues After Disabling AutoFit
Text Disappears From Placeholders After Changing AutoFit
If text disappears from a placeholder after you select Do not AutoFit, the placeholder may have a fixed size that is too small for the existing text. Click the placeholder border, then drag a corner handle to enlarge the shape. Alternatively, reduce the font size of the text manually until all content is visible.
AutoFit Setting Resets After Closing and Reopening PowerPoint
The global AutoCorrect setting (File > Options > Proofing > AutoCorrect Options > AutoFormat As You Type) persists across sessions. If the setting reverts, check whether an add-in or a corporate policy is overriding it. Test by opening PowerPoint in Safe Mode: press and hold the Ctrl key while starting PowerPoint. If AutoFit stays off in Safe Mode, an add-in is causing the reset. Disable add-ins by going to File > Options > Add-ins.
AutoFit Still Active in Slide Master Placeholders
Placeholders defined in the slide master inherit their AutoFit behavior from the master layout. To disable AutoFit for all slides that use a particular layout, open View > Slide Master, select the layout, click the placeholder border, and change its AutoFit setting to Do not AutoFit. Close the master view to apply the change to all slides using that layout.
PowerPoint AutoFit Settings Comparison
| Setting | Behavior | Best For |
|---|---|---|
| Shrink text on overflow | Reduces font size to fit text inside the shape | Short labels or single-line text where overflow is unlikely |
| Do not AutoFit | Keeps font size fixed; hides overflowing text | Consistent font sizes across slides; manual control required |
| Resize shape to fit text | Expands the shape to show all text at the current font size | Dynamic content where shape size is not critical |
After disabling AutoFit, you control exactly how text appears in every text box. For presentations that require uniform font sizes, such as corporate templates or training decks, turning off AutoFit prevents unexpected formatting changes. Try pairing the Do not AutoFit setting with the Resize shape to fit text option when you need the shape to grow with the content. For a quick keyboard shortcut, press Alt + F9 to toggle the selection pane and verify that no hidden text boxes are overlapping your visible content.