How to Open ODP File on Windows, Mac, Phone or Online (Free)

What is an ODP file?

An ODP file is a presentation saved in the OpenDocument Presentation format, part of the OpenDocument Format (ODF) standard maintained by OASIS and published as ISO/IEC 26300. It holds slides with text, images, charts, speaker notes, transitions and animations, just like a PowerPoint .pptx. It's the native format of LibreOffice Impress and Apache OpenOffice Impress, and the format many governments and schools use because no single company controls it.

A few dates put it in context (some file-extension sites wrongly say ODP dates from the late 1990s):

• May 2005: OASIS approves ODF 1.0, based on the OpenOffice.org XML format that Sun Microsystems had developed for StarOffice.
• November 2006: ODF becomes the international standard ISO/IEC 26300:2006.
• September 2011: ODF 1.2 (published by ISO in 2015).
• April 2021: ODF 1.3.
• December 3, 2025: OASIS approves ODF 1.4, the current version.

Inside, an .odp is a ZIP package of XML files. You can see that structure yourself by dropping one into the viewer above (Files tab):

Two relatives use the same content: .otp is an ODP template, and .fodp is a "flat" ODP saved as one plain XML file instead of a ZIP. The viewer on this page reads both.

How to open an ODP file

Short answer: the free way to open ODP file presentations is the LibreOffice suite: install it and double-click the file; it opens in Impress exactly as the author made it. If you'd rather not install anything, open it in Google Slides or PowerPoint for the web.

1. Check the file with the viewer above if you're not sure what it is: it confirms it's a real ODP, shows the slides and warns about a password.
2. Download LibreOffice from libreoffice.org (Windows, macOS or Linux, free).
3. Double-click the .odp, or start Impress and use File > Open.
4. Need it as PowerPoint or PDF? Use File > Save As > PowerPoint (.pptx) or File > Export As > Export as PDF (details).

Open ODP files in LibreOffice Impress (free)

LibreOffice Impress is the best free program for ODP files, because ODP is its own native format: nothing gets converted, so layouts, fonts, animations and transitions stay as the author saved them. LibreOffice is free and open source (MPL 2.0), made by The Document Foundation, and runs on Windows, macOS and Linux, so it's also the simplest way to open ODP file attachments from school or work.

1. Go to libreoffice.org > Download and install the version for your system. On Linux it's usually already installed or available from your software center.
2. Double-click your .odp file. If Windows asks which app to use, pick LibreOffice Impress and tick Always.
3. Press F5 to start the slide show from the first slide, or use Slide Show > Start from First Slide.

Apache OpenOffice Impress, LibreOffice's older sibling, also opens ODP files for free. LibreOffice is the more actively developed of the two, so it's the one we recommend.

Open an ODP file in PowerPoint (Windows and Mac)

Yes, PowerPoint can open and save ODP files. Microsoft's instructions apply to PowerPoint for Microsoft 365, PowerPoint 2024, 2021, 2019 and 2016:

1. In PowerPoint, click File > Open and browse to the folder with the file.
2. In the file-type list next to the file name, choose OpenDocument Presentation so .odp files are shown.
3. Select the file and click Open. Check every slide before you present (why).

To save a PowerPoint deck as ODP, use File > Save As and pick OpenDocument Presentation in Save as type. Microsoft advises saving a .pptx copy first if you want to keep a PowerPoint version.

Which PowerPoint versions support ODP?

If your PowerPoint is older than the versions above and can't open ODP file types at all, use LibreOffice or PowerPoint for the web instead. Files saved as ODF 1.4 by Microsoft 365 still open in apps that only know ODF 1.3; the newer features just aren't shown.

PowerPoint for the web

PowerPoint for the web (free with a Microsoft account) edits both .pptx and .odp files. Upload the file to OneDrive and click it. Some features aren't available while you edit an ODP online, but content it can't edit is preserved; use File > Download As to save an ODP copy back to your computer.

What changes when PowerPoint opens an ODP file

Most text, pictures, shapes, tables and speaker notes come through fine, but complex layouts, some animations and theme details can change, because PowerPoint and ODF don't support exactly the same features. Microsoft says an ODP opened in PowerPoint "might not have the same formatting" as in the app that created it. Its compatibility list shows where the two formats differ:

Practical tips:

• Fonts: if the deck uses a font that isn't installed on your computer, PowerPoint substitutes another, which can push text out of its box. Install the font, or ask the sender for a PDF.
• Presenting someone else's deck? Open it in LibreOffice Impress for a faithful result, or present a PDF export, which looks identical everywhere.
• Round-tripping (ODP → PowerPoint → ODP) adds changes each time. Pick one program for editing and convert once.

Open ODP files in Google Slides

Google Slides imports ODP presentations (Google added .odp import in December 2014) and can also export to ODP. It works in any browser, so it's handy on a Chromebook or a computer where you can't install software.

1. Go to drive.google.com and click New > File upload, then choose the .odp file.
2. Right-click the uploaded file and choose Open with > Google Slides. Slides creates a converted copy you can edit and present; the original .odp stays in Drive untouched.
3. To send it back as ODP or PowerPoint, use File > Download and pick ODP Document (.odp) or Microsoft PowerPoint (.pptx).

Limits: Google converts presentations up to 100 MB, it converts the file into its own format (so the same kind of formatting changes as in PowerPoint can happen), and it can't open a password-protected ODP.

Open ODP files on a Mac (and why Keynote can't)

Keynote can't open ODP files. Apple's Keynote guide lists only Keynote presentations and Microsoft PowerPoint files (.pptx and .ppt) as files it can open, and ODP isn't among Keynote's export formats either. macOS has no built-in app to open ODP file types, so double-clicking one on a Mac without another app installed gets you nowhere.

Your options on macOS:

1. LibreOffice for macOS (free): download it from libreoffice.org, then double-click the .odp. If macOS asks, right-click the file > Open With > LibreOffice, or set it permanently with Get Info > Open with > Change All.
2. PowerPoint for Mac (Microsoft 365): opens ODP files; Version 16.84 and later supports ODF 1.4.
3. Google Slides in Safari or Chrome, as shown above.
4. Want to edit it in Keynote? Convert the ODP to .pptx first (with LibreOffice or Google Slides, see convert), then open the .pptx in Keynote.

Open ODP files on iPhone, iPad and Android

The most reliable free app to open ODP file attachments on a phone is Collabora Office, an office suite based on LibreOffice for iPhone, iPad and Android. Its App Store listing names .odp and .otp among the supported presentation formats.

• iPhone and iPad: install Collabora Office from the App Store (free, needs iOS/iPadOS 16.5 or later). Then open the .odp from inside the app.
• Android: install Collabora Office from Google Play, or The Document Foundation's LibreOffice Viewer (viewing, with experimental editing). Then open the .odp from the Files app or your Downloads folder.
• Just need to read it? The viewer on this page works in mobile Safari and Chrome too: it shows every slide's text and the pictures without installing anything.

Convert ODP to PPTX or PDF

Convert an ODP to PPTX when the recipient uses PowerPoint or Keynote, and to PDF when they only need to view or print it: a PDF looks exactly the same on every device. All of these are free:

Many files at once: if you regularly open ODP files from colleagues who use LibreOffice, convert them in one go. LibreOffice converts from the command line without opening a window. We converted our test decks this way:

soffice --headless --convert-to pptx *.odp
soffice --headless --convert-to pdf --outdir pdf *.odp

On Windows, run it from LibreOffice's program folder (for example "C:\Program Files\LibreOffice\program\soffice.exe"). Converting to ODP works the same way: --convert-to odp file.pptx.

Password-protected ODP files

A password-protected ODP can only be opened with its password, and only in apps that support ODF encryption, such as LibreOffice and Apache OpenOffice. LibreOffice creates them with File > Save As and the Save with password check box; its help states the document "cannot be opened without the password". Microsoft lists encryption as not supported for ODP in PowerPoint, and Google Slides can't convert an encrypted file.

1. Open the file in LibreOffice Impress and type the password when asked.
2. To share it with PowerPoint or Google Slides users, choose File > Save As, untick Save with password, and save a copy (as .odp or .pptx). Send that copy over a channel you trust.

What the encryption looks like inside: the ODF standard lists each encrypted part in META-INF/manifest.xml with an encryption-data element. In our test, LibreOffice 24.2 encrypted the slides, styles, images and even meta.xml with AES-256 and a PBKDF2 key (100,000 iterations), and stored no preview thumbnail. Older OpenOffice-era files use Blowfish. The viewer above detects this and tells you which algorithm was used, but it can't (and won't try to) bypass the password. If the password is lost, there is no official recovery route: ask the sender for an unprotected copy.

ODP vs PPTX: what's the difference?

Both are ZIP packages of XML files and both are international standards; the practical difference is which app treats them as native. ODP is native to LibreOffice and OpenOffice; PPTX is native to Microsoft PowerPoint and opens directly in Keynote.

Which should you use? If most people you send decks to use PowerPoint or Keynote, save as PPTX. If you work in LibreOffice, need a vendor-neutral format for archiving, or an organization requires ODF, keep ODP and send a PDF alongside for anyone who only needs to view it.

ODP file won't open? Fixes for common problems

If you still can't open ODP file downloads or attachments after installing LibreOffice, one of these is usually the reason.

"How do you want to open this file?" or the wrong app opens

No installed program is registered for .odp. Install LibreOffice, then on Windows right-click the file > Open with > Choose another app > LibreOffice Impress > Always. On a Mac use Get Info > Open with > Change All.

The file is actually something else

Files are sometimes renamed by mistake or by an email system. Drop it into the viewer: it recognizes a PowerPoint .pptx, a Word or Excel file, an ODT text document or a Keynote file saved with an .odp name, and offers a copy with the right extension.

"The file is corrupt" or it opens empty

The download, copy or email attachment was probably cut short; an incomplete ZIP loses its index, which sits at the end of the file. The viewer reports this as "truncated". Download or copy the file again. If that's not possible, open it in LibreOffice: when it reports the file as corrupt, it offers to try a repair. In our tests, LibreOffice also refused an ODP whose manifest didn't list every part, so a file hand-edited or zipped by another tool can fail for that reason too; re-saving it from the original app fixes it.

Old PowerPoint says it can't open the file

PowerPoint 2003 and earlier have no built-in ODP support, and PowerPoint 2007 needs Service Pack 2. Use LibreOffice, Google Slides or PowerPoint for the web instead.

It asks for a password

The author saved it with a password. See password-protected ODP files.

Slides look wrong in PowerPoint or Google Slides

That's conversion, not damage: see what changes in PowerPoint. Open it in LibreOffice Impress to see the original layout.

Google Slides won't convert it

Check the size (presentations over 100 MB aren't converted) and whether it's password-protected. Large decks are usually big because of videos or photos; the viewer's Images tab shows what's inside.

Is an ODP file safe to open?

An ODP is a document, not a program, so opening one is generally safe, but like Office files it can contain macros. It's fine to open ODP files from people you know. LibreOffice checks for macros and, depending on the level set in Tools > Options > LibreOffice > Security > Macro Security, warns you or blocks them. Don't enable macros in a presentation from someone you don't know. The viewer above flags files that carry a Basic/ or Scripts/ macro folder, and it never runs anything inside the file.

Also remember that the file carries metadata: the author's name, the creation date and total editing time. The Metadata tab in the viewer shows exactly what a recipient can see.

ODT, ODS, ODG and other OpenDocument files

ODP is one of a family of OpenDocument formats; each one opens in the matching LibreOffice program. If you were sent several "OD" files, here's what each is:

Related file extensions

Sources and technical references

• OpenDocument v1.3 Part 2: Packages (OASIS) — mimetype entry rules, Thumbnails/thumbnail.png, manifest and encryption-data.
• OASIS approves ODF v1.4 (December 3, 2025) — current version of the standard.
• OpenDocument — Wikipedia — history (ODF 1.0 in 2005, ISO/IEC 26300 in 2006), MIME types and extensions.
• Use PowerPoint to save or open a presentation in the OpenDocument Presentation (.odp) format — Microsoft Support — steps, supported versions and the feature compatibility list.
• Edit OpenDocument (.odp) and PowerPoint (.pptx) files in PowerPoint for the web — Microsoft Support
• Microsoft 365 apps now support OpenDocument Format 1.4 — Microsoft 365 Insider — Version 2404 / Mac 16.84 builds.
• Word, Excel, and PowerPoint Standards Support — Microsoft Learn — ODF 1.1 in PowerPoint 2007/2010, notes for ODF 1.2, 1.3 and 1.4.
• Office 2007 SP2 supports ODF — PCWorld and Office 2013 to support ODF 1.2 — Neowin
• Complete ODF file format support — Google Workspace Updates (2014) and Export presentations in OpenDocument (.odp) (2016)
• Files you can store in Google Drive — Google Drive Help — 100 MB limit for presentations converted to Slides.
• Import a PowerPoint or another file into Keynote — Apple Support and Export to PowerPoint or another file format — Apple Support
• Protecting Contents in LibreOffice — LibreOffice Help — Save with password.
• Starting LibreOffice with parameters — LibreOffice Help — --headless and --convert-to.
• LibreOffice for Android and iOS — The Document Foundation and Collabora Office on the App Store
• Office Open XML — Wikipedia — Ecma-376 and ISO/IEC 29500 for the ODP vs PPTX comparison.

Frequently asked questions