Sample favicon ICO (4 sizes)

A Windows icon file that holds the test card at 16, 32, 48 and 256 pixels square, the sizes a favicon.ico normally carries.

sample-favicon.ico

41.4 KB42,424 bytes

Download ICO sample

Direct download. No sign-up and no waiting.

Type: image/vnd.microsoft.icon
SHA-256: 144845a0b3fecb0e144625fd4ea97a14eecd3e597fa36efa42e630a6e6b26b63
Direct URL: https://sampletestfiles.com/downloads/samples/sample-favicon.ico

Why test with this file

For testing favicon handling and icon parsers. The small images are stored as bitmaps and the largest as an embedded PNG, so a reader has to support both kinds of entry.

Images	4 (16 × 16, 32 × 32, 48 × 48, 256 × 256 px)
Colour depth	32 bits per pixel
Bitmap entries	16, 32, 48 px (BMP with an AND mask)
PNG entry	256 px
Transparency	None: every pixel is opaque

What to check

After your application has processed sample-favicon.ico, confirm that:

All 4 images are found, with the sizes listed above.
The 256-pixel image is decoded as PNG; its directory entry gives the width and height as 0, which stands for 256.
A browser tab shows the icon when the file is served as /favicon.ico.

First bytes of the file

The first 64 bytes of sample-favicon.ico as a hex dump: offset, bytes, then the same bytes as text. The ICO signature is 00 00 01 00.

00000000  00 00 01 00 04 00 10 10 00 00 01 00 20 00 68 04  |............ .h.|
00000010  00 00 46 00 00 00 20 20 00 00 01 00 20 00 a8 10  |..F...  .... ...|
00000020  00 00 ae 04 00 00 30 30 00 00 01 00 20 00 a8 25  |......00.... ..%|
00000030  00 00 56 15 00 00 00 00 00 00 01 00 20 00 ba 6a  |..V......... ..j|

Preview

Displays the file in your browser.

Technical details

File name	sample-favicon.ico
Format	ICO (Windows icon)
Extension	.ico
MIME type	image/vnd.microsoft.icon
Size	42,424 bytes (41.4 KB)
Kind	Binary
Signature	00 00 01 00
SHA-256	144845a0b3fecb0e144625fd4ea97a14eecd3e597fa36efa42e630a6e6b26b63
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-favicon.ico 'https://sampletestfiles.com/downloads/samples/sample-favicon.ico'
sha256sum sample-favicon.ico     # Linux
shasum -a 256 sample-favicon.ico # macOS

On Windows, run Get-FileHash sample-favicon.ico -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

About ICO

The icon format of Windows and the classic favicon.ico: several sizes of one picture in a single file.

ICO format reference

Where it fits

Web development
Placeholder images, media, data and documents for building and demonstrating web interfaces.
File parser testing
Well-formed files and deliberate edge cases for testing code that reads CSV, JSON, XML, PDF and more.

Related files

All curated sample files

Download