25 KB JPG sample file

A JPG file of exactly 25,600 bytes. It is a valid JPEG image file, generated for this site and checked with an independent parser.

sample-jpg-25kb.jpg

25 KB25,600 bytes

Download 25 KB JPG

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Type: image/jpeg
SHA-256: a0ed53669c2ef1d326d73576d43e56bd735e64191ecd145090c2fb7e77fa462d
Direct URL: https://sampletestfiles.com/downloads/jpg/sample-jpg-25kb.jpg

What is in this file

A 261 × 195 test card with fine grain, encoded as a baseline JPEG at quality 90. 814 bytes of JPEG comment (COM) segment bring the file to the exact size.

Dimensions	261 × 195 px
Encoding	Baseline DCT, Huffman
Chroma subsampling	4:4:4
Quality	90
Metadata	JFIF header and a comment, no EXIF
Progressive	No

First bytes of the file

The first 64 bytes of sample-jpg-25kb.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 00 00 01  |......JFIF......|
00000010  00 01 00 00 ff fe 03 2c 53 61 6d 70 6c 65 54 65  |.......,SampleTe|
00000020  73 74 46 69 6c 65 73 20 73 61 6d 70 6c 65 20 69  |stFiles sample i|
00000030  6d 61 67 65 2e 20 41 6c 69 67 6e 6d 65 6e 74 20  |mage. Alignment |

Preview

Displays the file in your browser.

Where 25 KB matters

A 25,600-byte file: the size of a small web image or a short document. These are the default limits a file of this size is useful for testing:

System	Limit	Note
TCP initial congestion window	About 14.6 KB (10 segments)	25 KB needs at least two flights of packets on a new connection.
Base64 encoding	Adds 33 percent	A 25 KB file becomes about 34 KB inside JSON or an email.

All 25 KB sample files

Use this file for

Testing avatar and logo uploads
Testing lazy loading and responsive images
Testing image upload, resize and thumbnail pipelines

Testing notes for JPG

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.
Re-saving a JPEG loses quality each time, so pipelines should resize from the original.

JPG format reference

Technical details

File name	sample-jpg-25kb.jpg
Format	JPG (JPEG image)
Extension	.jpg
MIME type	image/jpeg
Size	25,600 bytes (25 KB)
Kind	Binary
Signature	FF D8 FF
SHA-256	a0ed53669c2ef1d326d73576d43e56bd735e64191ecd145090c2fb7e77fa462d
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-jpg-25kb.jpg 'https://sampletestfiles.com/downloads/jpg/sample-jpg-25kb.jpg'
sha256sum sample-jpg-25kb.jpg     # Linux
shasum -a 256 sample-jpg-25kb.jpg # macOS

On Windows, run Get-FileHash sample-jpg-25kb.jpg -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 25 KB?: Yes. It is 25,600 bytes, which is 25 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 25 KB JPG file?: A 261 × 195 test card with fine grain, encoded as a baseline JPEG at quality 90. 814 bytes of JPEG comment (COM) segment 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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