100 MB JPG sample

A JPG file of exactly 104,857,600 bytes. It is a valid JPEG image file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 100 MB sample, test or dummy JPG file.

sample-jpg-100mb.jpg

100 MB104,857,600 bytes

Download 100 MB JPG

Created in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.

Type: image/jpeg
SHA-256: 5b6e451987d37d93e2ac54f05fd6b3e21492ea5b9e1629a8efe57f6f61819f06
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 6144 × 4608 test card with fine grain, encoded as a baseline JPEG at quality 90. 90,172,981 bytes of JPEG comment (COM) segments bring the file to the exact size.

Dimensions	6,144 × 4,608 px
Encoding	Baseline DCT, Huffman
Chroma subsampling	4:4:4
Quality	90
Metadata	JFIF header and comments, no EXIF
Progressive	No

First bytes of the file

The first 64 bytes of sample-jpg-100mb.jpg as a hex dump: offset, bytes, then the same bytes as text. The JPG signature is FF D8 FF.

00000000  ff d8 ff e0 00 10 4a 46  49 46 00 01 01 01 00 48 |......JFIF.....H|
00000010  00 48 00 00 ff fe ff ff  53 61 6d 70 6c 65 54 65 |.H......SampleTe|
00000020  73 74 46 69 6c 65 73 20  73 61 6d 70 6c 65 20 4a |stFiles sample J|
00000030  50 45 47 2e 20 50 61 64  64 69 6e 67 3a 20 2e 2e |PEG. Padding: ..|

Preview

Creates the file in your browser and shows it here. Nothing large is downloaded from our server.

Where 100 MB matters

A 104,857,600-byte file: the request-body limit of Cloudflare's Free and Pro plans, and the size above which GitHub rejects a file outright.

All 100 MB sample files

Use this file for

Measuring download speed from your own server or CDN
Testing lazy loading and responsive images
Testing image upload, resize and thumbnail pipelines

Testing notes for JPG

Photos from phones carry EXIF data including location; the samples here contain none.
A small file can decode to a huge bitmap. Validate pixel dimensions as well as bytes, or a 5 MB upload can demand hundreds of megabytes of memory.

JPG format reference

Technical details

File name	sample-jpg-100mb.jpg
Format	JPG (JPEG image)
Extension	.jpg
MIME type	image/jpeg
Size	104,857,600 bytes (100 MB)
Kind	Binary
Signature	FF D8 FF
SHA-256	5b6e451987d37d93e2ac54f05fd6b3e21492ea5b9e1629a8efe57f6f61819f06
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	Images

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-jpg-100mb.jpg     # Linux
shasum -a 256 sample-jpg-100mb.jpg # macOS

On Windows, run Get-FileHash sample-jpg-100mb.jpg -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 100 MB?: Yes. It is 104,857,600 bytes, which is 100 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 100 MB JPG file?: A 6144 × 4608 test card with fine grain, encoded as a baseline JPEG at quality 90. 90,172,981 bytes of JPEG comment (COM) segments bring the file to the exact size.
Why do larger samples have larger pixel dimensions?: The quality setting is fixed at 90, so the only way to reach a bigger file is a bigger picture. The dimensions are listed on each download page.

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