1 MB PPTX sample file
A PPTX file of exactly 1,048,576 bytes. It is a valid PowerPoint presentation (Office Open XML) file, generated for this site and checked with an independent parser.
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sample-pptx-1mb.pptx
1 MB1,048,576 bytes
Download 1 MB PPTXDirect download. No sign-up and no waiting.
- Type
- application/vnd.openxmlformats-officedocument.presentationml.presentation
- SHA-256
9e0fbd8a9f4aee9752bf74f072dcb694c97e1d7f263b43132f04d21d7a53ea48- Direct URL
https://sampletestfiles.com/downloads/pptx/sample-pptx-1mb.pptx
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 1,013,910 bytes. The image is stored uncompressed and sized so that the presentation is exactly 1,048,576 bytes.
| Slides | 5 |
|---|---|
| Contents | Title, bullet, picture and table slides, with speaker notes |
| Embedded image | PNG, 666 × 507 px |
| Macros | None |
| Container | ZIP (Office Open XML) |
First bytes of the file
The first 64 bytes of sample-pptx-1mb.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 with Microsoft PowerPoint.
Where 1 MB matters
A 1,048,576-byte file: exactly the default upload limit of nginx, Spring Boot and Next.js. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| nginx | 1 MB by default (client_max_body_size) | A multipart upload of this file exceeds the limit by the size of the form boundaries. |
| Spring Boot multipart | 1 MB per file by default (max-file-size) | A file of exactly 1 MB is at the limit. |
| Next.js API routes and Server Actions | 1 MB by default | Larger bodies need the size limit raised in configuration. |
| Cloud Firestore documents | 1 MiB (1,048,576 bytes) | The same number of bytes as this file. |
| Apache Kafka messages | About 1 MB by default | Brokers reject larger records unless message.max.bytes is raised. |
Use this file for
- Download tests on mobile connections
- Checking slide-to-image or slide-to-PDF conversion
- Verifying size limits with media-heavy files
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.
Technical details
| File name | sample-pptx-1mb.pptx |
|---|---|
| Format | PPTX (PowerPoint presentation (Office Open XML)) |
| Extension | .pptx |
| MIME type | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| Size | 1,048,576 bytes (1 MB) |
| Kind | Binary |
| Signature | 50 4B 03 04 |
| SHA-256 | 9e0fbd8a9f4aee9752bf74f072dcb694c97e1d7f263b43132f04d21d7a53ea48 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Not available for this format; details only |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Presentations |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-pptx-1mb.pptx 'https://sampletestfiles.com/downloads/pptx/sample-pptx-1mb.pptx'
sha256sum sample-pptx-1mb.pptx # Linux
shasum -a 256 sample-pptx-1mb.pptx # macOSOn Windows, run Get-FileHash sample-pptx-1mb.pptx -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 1 MB?
- Yes. It is 1,048,576 bytes, which is 1 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 1 MB PPTX file?
- A five-slide deck with a title slide, bullets, a table and speaker notes, plus one embedded test-card PNG of 1,013,910 bytes. The image is stored uncompressed and sized so that the presentation is exactly 1,048,576 bytes.
- What is on the slides?
- Five slides: a title, a bulleted list with speaker notes, a picture, a table and a closing slide.