5 MB BMP sample file

A BMP file of exactly 5,242,880 bytes. It is a valid Windows bitmap file, generated for this site and checked with an independent parser.

sample-bmp-5mb.bmp

5 MB5,242,880 bytes

Download 5 MB BMP

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Type: image/bmp
SHA-256: f325584f45f2457d3cb34baedfcc609c95652935c5a9ce9701384536f2b25b74
Direct URL: https://sampletestfiles.com/downloads/bmp/sample-bmp-5mb.bmp

What is in this file

An uncompressed 1526 × 1144 test card. 3,306 bytes of unused space between the header and the pixel array bring the file to the exact size.

Dimensions	1,526 × 1,144 px
Bit depth	24-bit RGB
Compression	None (BI_RGB)
Header	BITMAPINFOHEADER (40 bytes)
Row order	Bottom-up

First bytes of the file

The first 64 bytes of sample-bmp-5mb.bmp as a hex dump: offset, bytes, then the same bytes as text. The BMP signature is 42 4D.

00000000  42 4d 00 00 50 00 00 00 00 00 20 0d 00 00 28 00  |BM..P..... ...(.|
00000010  00 00 f6 05 00 00 78 04 00 00 01 00 18 00 00 00  |......x.........|
00000020  00 00 e0 f2 4f 00 13 0b 00 00 13 0b 00 00 00 00  |....O...........|
00000030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  |................|

Preview

Loads the whole 5 MB file in your browser.

Where 5 MB matters

A 5,242,880-byte file: the size of a phone photo and the minimum part size for S3 multipart uploads. These are the default limits a file of this size is useful for testing:

System	Limit	Note
PHP	2 MB per uploaded file by default (upload_max_filesize)	A 5 MB upload fails on an untuned PHP installation.
Vercel Functions	4.5 MB request body	Larger uploads must go directly to object storage.
Amazon S3 multipart upload	5 MiB minimum part size	This file is exactly one minimum part.
AWS Lambda	6 MB synchronous invocation payload	5 MB of binary data exceeds it once base64-encoded.
Browser localStorage	About 5 MB per origin	Storing this file as text fills the quota.
Django	2.5 MB in memory by default	Larger uploads are streamed to a temporary file instead of held in memory.

All 5 MB sample files

Use this file for

Simulating photo uploads from phones
Testing decoders for legacy formats
Testing size limits with naturally large images

Testing notes for BMP

Row padding and bottom-up order are the usual causes of skewed or upside-down images in hand-written decoders.
Some validators accept BMP by MIME type but have no decoder for it, which fails later in the pipeline.

BMP format reference

Technical details

File name	sample-bmp-5mb.bmp
Format	BMP (Windows bitmap)
Extension	.bmp
MIME type	image/bmp
Size	5,242,880 bytes (5 MB)
Kind	Binary
Signature	42 4D
SHA-256	f325584f45f2457d3cb34baedfcc609c95652935c5a9ce9701384536f2b25b74
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	Images

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-bmp-5mb.bmp 'https://sampletestfiles.com/downloads/bmp/sample-bmp-5mb.bmp'
sha256sum sample-bmp-5mb.bmp     # Linux
shasum -a 256 sample-bmp-5mb.bmp # macOS

On Windows, run Get-FileHash sample-bmp-5mb.bmp -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 5 MB?: Yes. It is 5,242,880 bytes, which is 5 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 5 MB BMP file?: An uncompressed 1526 × 1144 test card. 3,306 bytes of unused space between the header and the pixel array bring the file to the exact size.
What bit depth are the BMP samples?: 24-bit RGB with no compression and no colour table.

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