Image format

ICO Sample Files

ICO (.ico) files store multiple icon images at various sizes and color depths in a single container for desktop and web favicons. Use sample .ico files to test icon parsers, size selection, and transparency masks.

1 files All to 50KB SHA256 verified Manifest included

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Quick facts

CategoryImage

Total Files1

Extension.ico

MIMEimage/vnd.microsoft.icon

ManifestJSON

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ICO Sample Files — Download

Starter file

ico_100x100_sample_file_41KB.ico · 40.7 KB

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All (1) 50KB (1)

Filename	Size	MIME	Download
ico_100x100_sample_file_41KB.ico .ico Starter `SHA256 511ca0be6de0...`	40.7 KB	`image/vnd.microsoft.icon`	Download

Use cases

ICO Testing Workflows

Use the file table first, then branch into compare or FAQ only if the task needs more context.

Compare and decide

ICO Format Comparisons

More image formats: PNG TIFF BMP GIF SVG JPEG

FAQ and reference

ICO File FAQ

Checksum Verification

Use checksums to confirm file integrity after download.

shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.

Where is the machine-readable manifest?

Use the manifest when you need stable names, SHA256 values, and URLs for automation.

Manifest

Use in code — curl, Python, Node, wget

Copy any snippet directly into scripts, test suites, or CI pipelines. All URLs are stable and publicly accessible with no auth required.

# Download ico_100x100_sample_file_41KB.ico
curl -L -o ico_100x100_sample_file_41KB.ico \
  https://samplefile.com/samples/download/image/ico/ico_100x100_sample_file_41KB.ico/

# Or fetch a random ICO file
curl -s "https://samplefile.com/samples/api/random?format=ico" | jq -r '.download_url'

# Download ico_100x100_sample_file_41KB.ico
wget -O ico_100x100_sample_file_41KB.ico \
  https://samplefile.com/samples/download/image/ico/ico_100x100_sample_file_41KB.ico/

import requests

# Download a specific file
url = "https://samplefile.com/samples/download/image/ico/ico_100x100_sample_file_41KB.ico/"
resp = requests.get(url)
with open("ico_100x100_sample_file_41KB.ico", "wb") as f:
    f.write(resp.content)

# Or fetch a random ICO file via API
meta = requests.get("https://samplefile.com/samples/api/random?format=ico").json()
resp = requests.get(meta["download_url"])
with open(meta["name"], "wb") as f:
    f.write(resp.content)

// Download a specific file
const fs = require("fs");
const https = require("https");

const url = "https://samplefile.com/samples/download/image/ico/ico_100x100_sample_file_41KB.ico/";
https.get(url, (res) => {
  res.pipe(fs.createWriteStream("ico_100x100_sample_file_41KB.ico"));
});

// Or fetch a random ICO via the API
const meta = await fetch("https://samplefile.com/samples/api/random?format=ico").then(r => r.json());
const file = await fetch(meta.download_url);
// use file.arrayBuffer(), file.body, etc.

# Random ICO file (JSON response)
GET https://samplefile.com/samples/api/random?format=ico

# All ICO files
GET https://samplefile.com/samples/api/files?format=ico

# Manifest with SHA256 checksums
GET https://samplefile.com/samples/image/ico/manifest.json

# Response includes: name, size_bytes, mime_type, sha256, download_url

Validation Methodology

Validate MIME sniffing against extension and file signatures.
Test transparency, color profile, and resize pipelines.
Benchmark decode speed and memory use for larger dimensions.

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