Check spelling and grammar in PowerPoint Online

As you type, PowerPoint Online lets you know when it detects possible spelling, grammar, or style mistakes by underlining the words.

Example

Type

Available for files stored in

A spelling error marked with a red squiggly line

Spelling

OneDrive
OneDrive for Business
SharePoint Online

A grammar error marked with a blue double-underline

Grammar

OneDrive for Business
SharePoint Online

A writing style error marked with a dotted gold underline

Suggested writing refinement

OneDrive for Business
SharePoint Online

Correct an error

To correct an error (or to Ignore the suggestion), right-click an underlined term:

spelling context menu

Grammar context menu

Writing style context menu

Tip: It's possible the word you've typed is spelled correctly but the PowerPoint Online dictionary doesn't recognize it. It could be a brand name, acronym, or something similar.

Check a slide for correct spelling, grammar, and style

If your file is stored in OneDrive for Business or SharePoint Online, you can tell PowerPoint Online to proof a slide for spelling, grammar, and style.

  1. On the Review tab, select Check Slide > Check Slide.

    The Editor pane opens on the right side of the browser window. Any spelling or grammar errors, or suggested writing refinements, are listed in the Editor pane for you to review and decide on.

Turn off proofing markers throughout a file

If your file is stored in OneDrive for Business or SharePoint Online, you can hide all markers that show proofing errors.

  1. On the Review tab of the Ribbon, select the arrow on the Editor Settings button.

  2. On the menu that appears, select Hide Proofing Errors.

This command toggles the markers off and on. Use it again later if you want to show proofing markers in this presentation.

Turn off the proofing tool for particular words or a box of text

If your file is stored in OneDrive for Business or SharePoint Online, you can turn off proofing for a particular term or for an entire box containing text.

  1. Skip to step 2 if you want to change the proofing language for an entire box of text, or else the text box, select the word or words you don't want checked.

  2. Right-click the selected words, or the text box itself, and choose Set Proofing Language.

    Context menu

  3. Select Don't check spelling or grammar.

    Language setting

Change the proofing language

Changing the proofing language for the whole file isn't supported. You can only change the proofing language for selected words or for a box of text.

  1. Skip to step 2 if you want to change the proofing language for an entire box of text, or else select a word or words for which you want to change the proofing language.

  2. Right-click the box or the selected words, and then select Set Proofing Language.

  3. In the Mark selected text as box, choose the language that you want to change to, and then click OK.

    Change to different language

To change the language of the buttons and menus in the Office Online apps, see Change the language Office uses in its menus.

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