ODP is an OpenDocument presentation. LibreOffice opens it in Impress, so the app selected in the Mac file association is the suite even though the editor inside is named Impress.
Method 1: Use Finder
- In Finder, select a sample file such as slides.odp.
- Press Command–I, or choose File → Get Info.
- Expand Open with and choose LibreOffice. If it is missing, choose Other and locate the installed app.
- Click Change All and confirm the macOS prompt.
- Double-click another file of the same type to check the new default.
Method 2: Manage associations with Pahkui
Pahkui lets you browse by app or by format. When setting up an editor for several file types, you can inspect the current defaults and review pending changes in one window. Requires macOS 14 or later.
- Open Pahkui, switch to Format, and search for the extension you need from .odp.
- Select LibreOffice. Use Choose another app if it is not listed.
- Review the pending association, click Apply changes, and confirm the new app in the macOS dialog.
The formats in this guide require Pahkui Pro, a one-time purchase for lifetime use. The manual Finder method does not require a purchase. See pricing

If the default app does not change
- Choose LibreOffice.app in Open with if no separate Impress application is listed.
- Check animations, media links and fonts before presenting a file imported from another presentation program.
- If LibreOffice is missing, confirm it is installed and can open the sample directly, then locate it with Other. If an extension is absent from the catalog, add the format in Pahkui. Changing an association does not add format support to the target app.
Common questions
Does an ODP default change PowerPoint files too?
Not automatically. PPT and PPTX have their own extensions and should be checked separately.
How do I restore the previous app for .odp?
Choose the previous app again in Finder or Pahkui and confirm the change. This updates the type association without deleting files. Use the Open With context menu for a one-time exception.