ICO Sample Files

Verified downloads with technical metadata and integrity checks.

Format Overview

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.

Quick Stats

Files Shown1
Total Files1
CategoryImage
ManifestJSON

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.

Download Files

Filename Size MIME SHA256 Download
ico_100x100_sample_file_41KB.ico
.ico
40.7 KB image/vnd.microsoft.icon 511ca0be6de0ed3a7855f1dde2ad5b6dcba4669336d1394848abe247a4e52249 Download

Checksum Verification

Use checksums to confirm file integrity after download.

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

Related Guides

API Error Taxonomy for File Pipelines

Define stable, actionable error classes for upload and processing APIs.

Read Guide

Case Study: MIME Mismatch Blocking Legitimate Uploads

A production-style incident where strict type checks rejected real user files and how policy was corrected.

Read Guide

Checksum Integrity Workflows

Use SHA256 manifests to guarantee fixture integrity in CI and production pipelines.

Read Guide

Conversion Output Verification Playbook

Verify converted outputs for correctness, quality, and contract compliance.

Read Guide