What is the ODP file format?
An .odp file contains a ZIP-compressed presentation document saved in the open format OpenDocument, which is based on XML. .odp divides data into distinct presentation elements:
- Content - actual data,
- Styles,
- Metadata,
- Application settings.
Separate XML files and presentation contents are placed in folders that are in turn packed into a single .odp file. Because the container is a standard ZIP archive, you can rename any .odp to .zip and inspect its internal structure directly. A presentation can comprise slides, slide themes, styles, transition effects, fonts, images, sounds, and other media.
.odp format was developed in 2005 by the OASIS group along with other OpenDocument standards. The ISO/IEC 26300 standard defines the .odp specification (first ratified in 2006; the current major version is ODF 1.3, published by OASIS in 2021). .odp was created as a direct response to the proprietary .PPT format used by Microsoft Office, and as an attempt to devise a platform-independent file-sharing standard. The format also has a related template variant, .OTP, and a flat (uncompressed) XML alternative, .FODP. .odp is supported by most office applications, including Microsoft PowerPoint, LibreOffice Impress, and Google Slides.
Security & safety
RISK: LOWODP files are generally safe presentation documents, with the standard office-format caveat: they can contain embedded Basic macros, which LibreOffice and PowerPoint block or prompt about by default - never enable macros in a deck you didn't expect. Embedded media and hyperlinks can point to malicious destinations, so treat links in an unexpected ODP with normal caution. Opening an ODP with macros disabled is safe.
Format details
in a nutshellFULL NAMEOpenDocument Presentation
DEVELOPEROASIS (originated at Sun Microsystems / OpenOffice.org)since 2005 (ODF 1.0, OASIS); ISO/IEC 26300 since 2006; current major version ODF 1.3 (OASIS, 2021)
CATEGORYPresentation Files
MIME TYPEapplication/vnd.oasis.opendocument.presentation
TYPEZIP-based package of XML files (OpenDocument)
STANDARDOpen · royalty-free
MAGIC BYTES · FILE SIGNATURE
OFFSET
00010203
HEX
504B0304
ASCII
PK··
An ODP is a ZIP archive. In a correctly written ODF package the first entry is an uncompressed "mimetype" file whose bytes "application/vnd.oasis.opendocument.presentation" begin at offset 38, which distinguishes an ODP from a plain ZIP.
Programs that open ODP files
Windows4 apps
Microsoft PowerPoint
Paid Open directly (File > Open) - ODP supported since PowerPoint 2007 SP2; ODF 1.3 in Microsoft 365. Complex animations/transitions may shift; save back as .pptx to share with Office users. 
LibreOffice Impress
Open-source ODP is its native format - install LibreOffice and double-click. The reference implementation; full fidelity. 
Apache OpenOffice Impress
Open-source Opens ODP natively, but the project is only sporadically maintained (still ODF 1.2) - LibreOffice is the actively developed choice.
ONLYOFFICE Desktop Editors
Open-source Free desktop suite; opens and edits ODP, saves to ODP or PPTX. 
macOS2 apps
LibreOffice Impress
Open-source Native ODP support; free download for Apple silicon and Intel. (Apple Keynote can import ODP only with limited fidelity.) 
Linux2 apps
LibreOffice Impress
Open-source Pre-installed on most desktop distributions; double-click to open the deck.
Calligra Stage
Open-source KDE office suite presentation app with ODP as a native format; niche compared to LibreOffice. 
Android1 app
Collabora Office
Open-source LibreOffice-based mobile app; opens and edits ODP with desktop-grade fidelity.
iOS1 app
Web2 apps
Google Slides
Free Upload the .odp to Google Drive and open it - Slides converts it for editing; download back as .odp/.pptx/PDF via File > Download.
Microsoft 365 for the web (PowerPoint)
Free Upload to OneDrive and open in PowerPoint for the web with a free Microsoft account. Technical details
deep spec| Container format | Standard ZIP archive; magic bytes `50 4B 03 04` at offset 0 |
| MIME type | `application/vnd.oasis.opendocument.presentation` |
| Mimetype identification | Uncompressed `mimetype` entry stored as the first file in the ZIP; its literal content begins at byte offset 38, distinguishing `.odp` from a generic ZIP |
| Primary content file | `content.xml` - all slide content: text, shapes, drawing objects, and layout definitions |
| Styles file | `styles.xml` - master page layouts, named presentation styles, and slide themes |
| Metadata file | `meta.xml` - document properties: title, author, creation date, and keywords |
| Application settings file | `settings.xml` - view state, zoom level, and other application-specific options |
| Package manifest | `META-INF/manifest.xml` - lists every file in the package with its MIME type and optional encryption parameters |
| Drawing model | SVG-compatible vector drawing using the ODF `draw:` namespace; supports shapes, connectors, text frames, and grouped objects |
| Slide transitions and animation | Encoded in `content.xml` via `presentation:show` and `anim:` namespace elements, using a SMIL-based animation model |
| Embedded media storage | Images, audio, and video stored as sub-files under `Pictures/` or `media/` subdirectories within the ZIP package |
| Encryption | AES-256-CBC; encrypted streams declared in `META-INF/manifest.xml` with PBKDF2 key-derivation parameters |
| Template variant | `.otp` uses an identical internal structure; differentiated only by MIME type `application/vnd.oasis.opendocument.presentation-template` |
| Flat-file variant | `.fodp` stores the entire presentation as a single uncompressed XML document with no ZIP wrapper |
| Interoperability target | Imports and exports `.pptx` (OOXML ISO/IEC 29500) via LibreOffice Impress, Microsoft PowerPoint, and ONLYOFFICE |
| Key XML namespaces | `xmlns:presentation`, `xmlns:draw`, `xmlns:fo`, `xmlns:svg`, and `xmlns:anim` declared in the root element of `content.xml` |
| Released | 2005 (ODF 1.0, OASIS); ISO/IEC 26300 since 2006; current major version ODF 1.3 (OASIS, 2021) |
| Open standard | Yes · royalty-free |
| Specification | docs.oasis-open.org |
ODP conversions
Possible
.ODP .PPTXOnline converter
Yes -- open the ODP in LibreOffice Impress, Microsoft PowerPoint or Google Slides and save it as .pptx.
How to convert
.ODP .PDFOnline converter
Yes -- open the ODP in LibreOffice Impress and use File > Export As PDF. No third-party tool needed.
How to convert
.ODP .JPGGUIDE
Yes, you can convert ODP to JPG - the fastest free method is LibreOffice Impress, which exports all slides as…
How to convert
.ODP .PPSOnline converter
Yes -- open the ODP in Microsoft PowerPoint or LibreOffice Impress and save it as PowerPoint Show (.pps).
How to convert
.ODP .PPSXOnline converter
Yes -- open the ODP in Microsoft PowerPoint or LibreOffice Impress and save it as PowerPoint Show (.ppsx).
How to convert
.ODP .PPTOnline converter
Yes, you can convert ODP to PPT - open the file in LibreOffice Impress (free) and use File > Save As >…
How to convert
.ODP .KEYNOTEGUIDE
ODP converts to Keynote by opening the file directly in Apple Keynote on a Mac and exporting it as a .key…
How to convert
Community Q&A
asked by usersNo questions yet - be the first to ask about ODP files.
Frequently asked questions
How do I open an ODP file?
Install the free LibreOffice and open it in Impress, upload it to Google Slides in a browser, or open it in Microsoft PowerPoint (2007 SP2 and later support ODP). On a phone, Collabora Office or Google Slides works.
Can PowerPoint open ODP files?
Yes - every PowerPoint since 2007 SP2 (2009) opens and saves ODP, and Microsoft 365 supports ODF 1.3. Complex animations and transitions may shift because PowerPoint and ODF store effects differently; for those, keep a .pptx copy.
How do I convert ODP to PowerPoint (PPTX)?
Open the file in LibreOffice Impress, PowerPoint or Google Slides and save/download as .pptx. For many files at once: 'soffice --headless --convert-to pptx *.odp'.
What's the difference between ODP and PPTX?
Both are ZIP+XML presentation formats. ODP is the vendor-neutral ISO 26300 OpenDocument standard (native to LibreOffice Impress); PPTX is Microsoft's OOXML (native to PowerPoint). They convert back and forth, but advanced effects may not round-trip perfectly.
Can I open an ODP without installing anything?
Yes - upload it to Google Drive and open with Google Slides, or to OneDrive and open with PowerPoint for the web. Both are free in any browser.
How do I convert ODP to PDF?
Open it in LibreOffice Impress (File > Export As PDF) or PowerPoint (Save As PDF), or use Google Slides' File > Download > PDF. Ideal for handouts and sending to anyone.
Why does my ODP look different in PowerPoint?
ODF and PowerPoint store fonts, animations and transitions differently, so a complex deck can shift when opened in the other app. For an exact match, present it in the program it was made in, or export to PDF.
References
1ISO/IEC 26300 - OpenDocument Formatwww.iso.org
2OASIS - OpenDocument Format v1.3 specificationdocs.oasis-open.org
