Upload Limits
Use PDF files just below, exactly at, and just above your application's file-size limit.
For example, if your application accepts files up to 10 MB, test the 9 MB, 10 MB, and 11 MB cases to verify where the boundary is applied.
PDF generator
or choose a popular size below ↓
Sample PDF Files for Testing
Download a valid sample PDF file at the exact size you need, from 1 KB to 100 MB. Each PDF has real PDF structure and reaches the requested byte count.
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Valid PDF structure · Exact byte size · Free · No signup
Generate a PDF for Testing
PDF is one of the most common document formats used in upload forms, document management systems, previewers, and processing workflows.
These sample PDFs give you a predictable file for testing. Choose the size you need, download the file, and use it to test upload limits, PDF previews, parsers, validation rules, and document-processing pipelines.
Unlike a renamed file, each test PDF file has a PDF structure that your application can inspect and process.
Popular PDF Sizes
Choose a commonly used size or open a specific size page.
10 KB
10,240 bytes
100 KB
102,400 bytes
500 KB
512,000 bytes
1 MB
1,048,576 bytes
5 MB
5,242,880 bytes
10 MB
10,485,760 bytes
25 MB
26,214,400 bytes
50 MB
52,428,800 bytes
100 MB
104,857,600 bytes
For boundary testing, use files below, at, and above your application's upload limit.
What's Inside the PDF?
Each generated file is a PDF 1.4 document with one page of sample text.
The remaining file size comes from internal padding. This allows the PDF to reach the requested byte size without requiring a large amount of visible document content.
For example, a 50 MB PDF can contain the same basic visible content as a smaller PDF while still reaching exactly 50 MB.
This makes the files useful when the test requires a specific file size rather than a large amount of document content.
PDF Technical Details
| Property | Value |
|---|---|
| Format | |
| Extension |
.pdf
|
| MIME type |
application/pdf
|
| PDF version | PDF 1.4 |
| File signature |
%PDF-
|
| Size range | 1 KB – 100 MB |
| Size system | Binary |
| Content | One page of sample text |
The PDF signature begins with %PDF-, which provides a useful value when testing file-type detection.
For MIME-related testing, your application should identify the file as application/pdf.
What Can You Test With a Sample PDF?
A sample PDF download for testing can help you test more than just whether an upload button works.
PDF Previews
Test PDF thumbnails, browser previews, document viewers, and download links with files of different sizes.
This can help identify problems that only appear when larger documents are processed.
Document Processing
Use sample PDF files to test parsing, text extraction, conversion, indexing, and other document-processing workflows.
Large File Processing
The 50 MB and 100 MB files can be useful for testing processing workers, memory usage, timeouts, and other large-file handling scenarios.
Download a Sample PDF From the Command Line
You can fetch a PDF directly using its stable file URL.
This makes the files useful as repeatable fixtures for development, automated tests, and CI workflows.
For example:
terminal
$ curl -L -o sample-1mb.pdf "https://www.testfilelab.com/docs/generate/pdf/1mb?download=1"Exact PDF File Sizes
Testfilelab uses binary units for generated file sizes.
That means:
1 KB= 1,024 bytes
1 MB= 1,048,576 bytes
So a 10 MB PDF is exactly:
10,485,760 bytes
This distinction matters when testing upload limits because some systems describe file sizes using decimal units.
If your application limit is defined as 10,000,000 bytes, for example, a binary 10 MB file is larger than that limit.
Frequently Asked Questions
It is a real PDF. The file begins with the %PDF- signature, contains PDF structure, and is designed to open in standard PDF readers and browser-based PDF viewers.
You can generate and download PDFs up to 100 MB, which is exactly 104,857,600 bytes when using Testfilelab's binary sizing system.
The file reaches its target size through internal padding rather than additional visible pages or content. This keeps the document useful for exact-size testing.
A PDF should be detected as: application/pdf. If your application reports another MIME type, review how your server or validation layer determines the file type.
Yes. The PDFs can be used for commercial testing without attribution.
Explore More Test Documents
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Download Your Sample PDF
Choose the exact PDF size you need and use it wherever you need a predictable, valid document for testing.
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Valid PDF structure · Exact byte size · Free · No signup