100 MB PPTX sample

A PPTX file of exactly 104,857,600 bytes. It is a valid PowerPoint presentation (Office Open XML) 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 PPTX file.

sample-pptx-100mb.pptx

100 MB104,857,600 bytes

Download 100 MB PPTX

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Type: application/vnd.openxmlformats-officedocument.presentationml.presentation
SHA-256: 7099e95d4f72ca5a31618dbf7d9c0181f57f60c8bf78ee7843f4c4cdd0932293
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A five-slide deck with a title slide, bullets, a table and speaker notes, plus one embedded test-card PNG of 104,822,934 bytes, stored uncompressed and sized so that the presentation is exactly 104,857,600 bytes. Padding of 95,382,950 bytes in a private ancillary PNG chunk ("spAd", skipped by decoders) inside the image makes up the rest.

Slides	5
Contents	Title, bullet, picture and table slides, with speaker notes
Embedded image	PNG, 2,048 × 1,536 px
Macros	None
Container	ZIP (Office Open XML)

First bytes of the file

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

00000000  50 4b 03 04 14 00 00 00  08 00 00 00 21 5c 20 37 |PK..........!\ 7|
00000010  1d 4f fa 01 00 00 8b 10  00 00 13 00 00 00 5b 43 |.O............[C|
00000020  6f 6e 74 65 6e 74 5f 54  79 70 65 73 5d 2e 78 6d |ontent_Types].xm|
00000030  6c cd 98 4d 6f 9b 40 10  86 ef fd 15 88 0b 87 ca |l..Mo.@.........|

Preview

PPTX files cannot be shown in a browser. Download the file and open it in an application that reads PPTX, such as Microsoft PowerPoint.

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

Measuring download speed from your own server or CDN
Verifying size limits with media-heavy files
Testing presentation uploads in learning and meeting software

Testing notes for PPTX

Converters differ in font substitution; the same deck can reflow when a font is missing.
Presentation size is dominated by embedded media, so limits tuned for documents are often too small for real decks.

PPTX format reference

Technical details

File name	sample-pptx-100mb.pptx
Format	PPTX (PowerPoint presentation (Office Open XML))
Extension	.pptx
MIME type	application/vnd.openxmlformats-officedocument.presentationml.presentation
Size	104,857,600 bytes (100 MB)
Kind	Binary
Signature	50 4B 03 04
SHA-256	7099e95d4f72ca5a31618dbf7d9c0181f57f60c8bf78ee7843f4c4cdd0932293
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	Presentations

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-pptx-100mb.pptx     # Linux
shasum -a 256 sample-pptx-100mb.pptx # macOS

On Windows, run Get-FileHash sample-pptx-100mb.pptx -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 PPTX file?: A five-slide deck with a title slide, bullets, a table and speaker notes, plus one embedded test-card PNG of 104,822,934 bytes, stored uncompressed and sized so that the presentation is exactly 104,857,600 bytes. Padding of 95,382,950 bytes in a private ancillary PNG chunk ("spAd", skipped by decoders) inside the image makes up the rest.
What is on the slides?: Five slides: a title, a bulleted list with speaker notes, a picture, a table and a closing slide.

Opening large files

Keep this tab open until your browser reports that the download is complete. Check the saved file size against the byte count on this page; a partial download may not open. For ordinary viewer tests, start with a 5 MB or 10 MB sample. Large samples are stress-test fixtures and may exceed the memory or file-size limits of your viewer.

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