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ICO at a glance
ICO
Convert to ICO when preparing Windows application icons, installer assets, or other desktop-interface graphics that require native icon packaging.
It is useful when multiple icon sizes must travel in a single platform-friendly file.
AZW at a glance
AZW
Convert to AZW when the output is intended for Kindle reading or compatibility with Amazon-managed ebook workflows.
It is appropriate for preparing files for Kindle devices, personal Kindle libraries, or Amazon-oriented distribution pipelines.
For broad cross-platform ebook interchange, EPUB is usually the better base format.
Format comparison
| Feature | ICO | AZW |
|---|---|---|
| File type | Image | Ebook |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | reflowable |
| File size characteristics | medium | small |
| Compatibility | broad | moderate |
| Editability | moderate | moderate |
| Created year | 1985 | 2007 |
| Inventor | Microsoft | Amazon |
| Status | active | active |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | moderate |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | reading |
When to use each format
When to use ICO
- capture ingest
- editing
- web or print delivery
- Designed specifically for multi-size icon delivery.
When to use AZW
- ebook publishing
- reader distribution
- digital libraries
- Historically important in Kindle distribution.
FAQs
Why convert ICO to AZW?
Convert to AZW when the output is intended for Kindle reading or compatibility with Amazon-managed ebook workflows.
It is appropriate for preparing files for Kindle devices, personal Kindle libraries, or Amazon-oriented distribution pipelines.
For broad cross-platform ebook interchange, EPUB is usually the better base format.
What changes when converting ICO to AZW?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in ICO to small in AZW. Quality profile changes from depends in ICO to reflowable in AZW. Compatibility profile changes from broad in ICO to moderate in AZW. Workflow profile changes from delivery in ICO to reading in AZW.
What should I review after converting ICO to AZW?
Check the exported file for Vendor-specific and not a broad open interchange choice.; Often superseded by EPUB-origin and newer Kindle workflows..