Free ODP test files and sample generator
The open ISO-standard presentation used by LibreOffice Impress; the Linux equivalent of PPTX.
What is a .odp file?
ODP: OpenDocument Presentation. ODP is the OpenDocument presentation and the native format of LibreOffice Impress. Like the rest of the ODF family it is a ZIP package of XML, with one drawing page per slide, and it is an ISO standard, which is why public-sector and open-source workflows often require it rather than PPTX.
Why generate a test ODP file?
- Verify presentation handling beyond PPTX.
- Test slide extraction and thumbnailing on an OpenDocument deck.
- Check conversion to PPTX or PDF.
What you can put inside a .odp file
You get 5 content options for ODP, so the file holds something meaningful rather than random padding: Title + bullets, Text-heavy, Image, Bar chart, Pie chart. Pick several and they are merged into one file, with a section, sheet, slide or folder for each.
How a .odp file is identified
Every .odp file begins with 50 4B 03 04, the ASCII letters "PK", the initials of Phil Katz, who created the ZIP format. That is what a validator inspecting content rather than the file name looks for.
How the size lands on the exact byte
The package is a ZIP, so the padding is trailing whitespace inside one of the XML parts it already contains. Extractors and Office readers both ignore it, so the document opens unchanged.
Negative testing with broken ODP files
- Invalid. Identifiable, but wrong inside, so it fails during parsing.
- Corrupted. The leading bytes are destroyed, so the
50 4B 03 04identifying a .odp is gone. Same length as the valid file. - Incomplete. Truncated part-way, so it is genuinely shorter.
- Empty. Chosen under Content rather than File Condition: valid structure, no data.
Which failure to reach for, and what to assert for each, is covered in how to make a corrupted file for testing. For upload limits and type checks see testing file upload validation.
Sample ODP content
[OpenDocument], Slide 1, Slide 2, Slide 3 (ODF).
This shows the shape of the file. Your download is generated fresh at the size you choose, so the values will differ.
How to open and verify the file
Open in LibreOffice Impress or PowerPoint.
Media type application/vnd.oasis.opendocument.presentation · extension .odp · category Doc & TXT
Generate a .odp file → · questions about sizes, privacy or cost are answered on the site FAQ.
Frequently asked questions about ODP files
What identifies a .odp file?
A .odp file begins with the bytes 50 4B 03 04, the ASCII letters "PK", the initials of Phil Katz, who created the ZIP format. Those bytes are what a content-sniffing validator looks for, and what the Corrupted condition destroys.
How can a .odp file be an exact number of bytes?
The package is a ZIP, so the padding is trailing whitespace inside one of the XML parts it already contains. Extractors and Office readers both ignore it, so the document opens unchanged.
What can go inside the ODP file?
There are 5 content options for .odp: Title + bullets, Text-heavy, Image, Bar chart, Pie chart. Choose more than one and they are combined into a single file, a section, sheet, slide or folder per option, rather than downloaded separately.
Can I download several broken ODP files at once?
Yes, select more than one File Condition and you get one ZIP containing a .odp per condition, each named after its condition.
Can the ODP file use UTF-16 or a byte-order mark?
No, and deliberately. A .odp file is a container rather than plain text, so rewriting its bytes as UTF-16 would not produce a UTF-16 document. It would produce a broken file. Use a text format such as CSV, JSON or XML for encoding tests.
How do I open or verify the ODP file?
Open in LibreOffice Impress or PowerPoint.