100 MB ODT sample

An ODT file of exactly 104,857,600 bytes. It is a valid OpenDocument Text file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 100 MB sample, test or dummy ODT file.

sample-odt-100mb.odt

100 MB104,857,600 bytes

Download 100 MB ODT

Created in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.

Type: application/vnd.oasis.opendocument.text
SHA-256: 8445342cff53abef1b2c5645ac5db0fdebba389257a94f009cf0b37728158ab0
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

An OpenDocument text document with a title, one embedded test-card PNG and 4,353,822 sections of headings, paragraphs and lists. Text in the document description (meta.xml) brings the file to the exact size.

Sections	4,353,822
Images	1 PNG, 477 × 366 px
ODF version	1.3
Macros	None
Container	ZIP (OpenDocument package)

First bytes of the file

The first 64 bytes of sample-odt-100mb.odt as a hex dump: offset, bytes, then the same bytes as text. The ODT signature is 50 4B 03 04.

00000000  50 4b 03 04 0a 00 00 00  00 00 00 00 21 5c 5e c6 |PK..........!\^.|
00000010  32 0c 27 00 00 00 27 00  00 00 08 00 00 00 6d 69 |2.'...'.......mi|
00000020  6d 65 74 79 70 65 61 70  70 6c 69 63 61 74 69 6f |metypeapplicatio|
00000030  6e 2f 76 6e 64 2e 6f 61  73 69 73 2e 6f 70 65 6e |n/vnd.oasis.open|

Preview

ODT files cannot be shown in a browser. Download the file and open it in an application that reads ODT, such as LibreOffice Writer and Apache OpenOffice.

Where 100 MB matters

A 104,857,600-byte file: the request-body limit of Cloudflare's Free and Pro plans, and the size above which GitHub rejects a file outright.

All 100 MB sample files

Use this file for

Finding the first upload limit in a new stack
Testing document uploads in public-sector and education software, where ODT is often mandatory
Checking conversion between ODT, DOCX and PDF

Testing notes for ODT

Layout rarely survives a round trip through Word unchanged: fonts, numbering and tables are the usual casualties.
Reading the type from the mimetype entry only works if that entry comes first and is not compressed. Tools that re-zip a document tend to break both rules, and strict readers then reject the file.

ODT format reference

Technical details

File name	sample-odt-100mb.odt
Format	ODT (OpenDocument Text)
Extension	.odt
MIME type	application/vnd.oasis.opendocument.text
Size	104,857,600 bytes (100 MB)
Kind	Binary
Signature	50 4B 03 04
SHA-256	8445342cff53abef1b2c5645ac5db0fdebba389257a94f009cf0b37728158ab0
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Not available for this file; details only
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Documents

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-odt-100mb.odt     # Linux
shasum -a 256 sample-odt-100mb.odt # macOS

On Windows, run Get-FileHash sample-odt-100mb.odt -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 100 MB?: Yes. It is 104,857,600 bytes, which is 100 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 100 MB ODT file?: An OpenDocument text document with a title, one embedded test-card PNG and 4,353,822 sections of headings, paragraphs and lists. Text in the document description (meta.xml) brings the file to the exact size.
Will the ODT samples open in Microsoft Word?: Yes. Word has opened OpenDocument text files since Word 2007 Service Pack 2. The samples use only headings, paragraphs, a list, a table and one image.

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