1 MB Markdown sample file
A Markdown file of exactly 1,048,576 bytes. It is a valid Markdown file, generated for this site and checked with an independent parser.
Download
sample-md-1mb.md
1 MB1,048,576 bytes
Download 1 MB MarkdownDirect download. No sign-up and no waiting.
- Type
- text/markdown
- SHA-256
e26bc5e386ed2a5b3e48a8cf350f4b347cd5f729ed5b98f7797a86ba298b0c1b- Direct URL
https://sampletestfiles.com/downloads/md/sample-md-1mb.md
What is in this file
2,271 sections that exercise headings, emphasis, lists, links, a table, a fenced code block and a block quote. An HTML comment on the last line brings the file to the exact size.
| Sections | 2,271 |
|---|---|
| Syntax | CommonMark with a pipe table |
| Encoding | UTF-8 (ASCII characters only) |
| Line endings | LF |
How the file begins
The opening lines of sample-md-1mb.md, exactly as they appear in the file.
# Sample Markdown file (1 MB)
A CommonMark document for testing renderers, editors and upload forms.
## Section 1
The people, companies and addresses mentioned in these samples are fictional. A parser that works on ten rows may still fail on ten thousand, so test …
- First point with *emphasis*
- Second point with **strong text**
- Third point with `inline code`
1. An ordered item
2. Another ordered item with a [link](https://example.com/)Preview
Shows the first 64 KB of the file.
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 sanitisation of rendered HTML
- Testing documentation pipelines
Testing notes for Markdown
- Tables are an extension rather than part of CommonMark, so renderers differ on whether they appear.
- Markdown may contain raw HTML, so anything that renders user-supplied Markdown needs an HTML sanitiser.
Technical details
| File name | sample-md-1mb.md |
|---|---|
| Format | Markdown (Markdown) |
| Extension | .md |
| MIME type | text/markdown |
| Size | 1,048,576 bytes (1 MB) |
| Kind | Text |
| SHA-256 | e26bc5e386ed2a5b3e48a8cf350f4b347cd5f729ed5b98f7797a86ba298b0c1b |
| 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-md-1mb.md 'https://sampletestfiles.com/downloads/md/sample-md-1mb.md'
sha256sum sample-md-1mb.md # Linux
shasum -a 256 sample-md-1mb.md # macOSOn Windows, run Get-FileHash sample-md-1mb.md -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 Markdown file?
- 2,271 sections that exercise headings, emphasis, lists, links, a table, a fenced code block and a block quote. An HTML comment on the last line brings the file to the exact size.
- Which Markdown features do the samples use?
- Headings, emphasis, ordered and unordered lists, links, a pipe table, a fenced code block and a block quote.