10 MB RTF sample

An RTF file of exactly 10,485,760 bytes. It is a valid Rich Text Format file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 10 MB sample, test or dummy RTF file.

sample-rtf-10mb.rtf

10 MB10,485,760 bytes

Download 10 MB RTF

Created in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.

Type: application/rtf
SHA-256: 273054f1571da3eccac58feb91f81c7cd63e105cda86e6e3e3e3cda149a25542
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A Rich Text Format document with a title and 29,277 sections of bold headings and body text in Helvetica. An ignorable destination group ({\*\fixturepad}), which word processors skip, brings the file to the exact size.

Sections	29,277
Character set	ANSI, code page 1252
Fonts	Helvetica
Images	None
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-rtf-10mb.rtf, exactly as they appear in the file.

00000000  7b 5c 72 74 66 31 5c 61  6e 73 69 5c 61 6e 73 69 |{\rtf1\ansi\ansi|
00000010  63 70 67 31 32 35 32 5c  64 65 66 66 30 7b 5c 66 |cpg1252\deff0{\f|
00000020  6f 6e 74 74 62 6c 7b 5c  66 30 5c 66 73 77 69 73 |onttbl{\f0\fswis|
00000030  73 20 48 65 6c 76 65 74  69 63 61 3b 7d 7d 5c 66 |s Helvetica;}}\f|

Preview

Creates the file in your browser and shows the first 64 KB of it.

Where 10 MB matters

A 10,485,760-byte file: over the default limits of PHP, API Gateway and Spring Boot requests. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Amazon API Gateway	10 MB payload	A 10 MB file in a multipart or base64 body is over the limit.
Spring Boot multipart	10 MB per request by default (max-request-size)	Exceeded once form overhead is added.
PHP	8 MB POST body by default (post_max_size)	Rejected before the script runs.
Amazon S3 multipart upload	5 MiB minimum part size	This file splits into exactly two minimum-sized parts.
Email attachments	Commonly 20 to 25 MB per message	10 MB fits, at about 13.3 MB once encoded.

All 10 MB sample files

Use this file for

Finding the first upload limit in a new stack
Verifying upload filters that allow or block RTF
Testing legacy document import

Testing notes for RTF

Two MIME types are in use, application/rtf and text/rtf, and allow-lists should recognise both.
RTF readers must skip groups they do not understand; a parser that fails on unknown control words is not conformant.

RTF format reference

Technical details

File name	sample-rtf-10mb.rtf
Format	RTF (Rich Text Format)
Extension	.rtf
MIME type	application/rtf
Size	10,485,760 bytes (10 MB)
Kind	Text
Signature	7B 5C 72 74 66 31
SHA-256	273054f1571da3eccac58feb91f81c7cd63e105cda86e6e3e3e3cda149a25542
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	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Documents

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-rtf-10mb.rtf     # Linux
shasum -a 256 sample-rtf-10mb.rtf # macOS

On Windows, run Get-FileHash sample-rtf-10mb.rtf -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 10 MB?: Yes. It is 10,485,760 bytes, which is 10 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 10 MB RTF file?: A Rich Text Format document with a title and 29,277 sections of bold headings and body text in Helvetica. An ignorable destination group ({\*\fixturepad}), which word processors skip, brings the file to the exact size.
Do the RTF samples contain embedded objects?: No. They contain only formatted text: bold headings and paragraphs in a single font.

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