1 MB PDF sample file
A PDF file of exactly 1,048,576 bytes. It is a valid Portable Document Format file, generated for this site and checked with an independent parser.
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sample-pdf-1mb.pdf
1 MB1,048,576 bytes
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- Type
- application/pdf
- SHA-256
5a9dc29742698650bf347aae734b6efd09f554ef70f4d6213e850359328505d4- Direct URL
https://sampletestfiles.com/downloads/pdf/sample-pdf-1mb.pdf
What is in this file
9 pages of selectable text followed by 1 full-page test-card image stored as uncompressed RGB, which is what gives the file its size. 1,823 bytes of PDF comment lines before the cross-reference table bring the file to the exact size.
| Pages | 10 |
|---|---|
| Page size | A4 (595 × 842 pt) |
| PDF version | 1.4 |
| Fonts | Helvetica, Helvetica-Bold (standard, not embedded) |
| Images | 1 uncompressed RGB |
| Encrypted | No |
| Text selectable | Yes |
First bytes of the file
The first 64 bytes of sample-pdf-1mb.pdf as a hex dump: offset, bytes, then the same bytes as text. The PDF signature is 25 50 44 46 2D.
00000000 25 50 44 46 2d 31 2e 34 0a 25 e2 e3 cf d3 0a 31 |%PDF-1.4.%.....1|
00000010 20 30 20 6f 62 6a 0a 3c 3c 20 2f 54 79 70 65 20 | 0 obj.<< /Type |
00000020 2f 43 61 74 61 6c 6f 67 20 2f 50 61 67 65 73 20 |/Catalog /Pages |
00000030 32 20 30 20 52 20 3e 3e 0a 65 6e 64 6f 62 6a 0a |2 0 R >>.endobj.|Preview
Displays the file in your browser.
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
- Exercising virus scanning and content inspection
- Testing document upload forms and size limits
Testing notes for PDF
- PDFs can embed JavaScript and attachments, so upload handlers should scan them rather than trust the extension. The samples here contain neither.
- Page count and file size are unrelated: one scanned page can be larger than a 300-page text document.
Technical details
| File name | sample-pdf-1mb.pdf |
|---|---|
| Format | PDF (Portable Document Format) |
| Extension | |
| MIME type | application/pdf |
| Size | 1,048,576 bytes (1 MB) |
| Kind | Binary |
| Signature | 25 50 44 46 2D |
| SHA-256 | 5a9dc29742698650bf347aae734b6efd09f554ef70f4d6213e850359328505d4 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Documents |
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-pdf-1mb.pdf 'https://sampletestfiles.com/downloads/pdf/sample-pdf-1mb.pdf'
sha256sum sample-pdf-1mb.pdf # Linux
shasum -a 256 sample-pdf-1mb.pdf # macOSOn Windows, run Get-FileHash sample-pdf-1mb.pdf -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 PDF file?
- 9 pages of selectable text followed by 1 full-page test-card image stored as uncompressed RGB, which is what gives the file its size. 1,823 bytes of PDF comment lines before the cross-reference table bring the file to the exact size.
- Are the PDFs password-protected or signed?
- No. They are unencrypted, unsigned and contain no forms, scripts or attachments.