ICO to SUN for Image Workflows
Fast, instant ICO to SUN conversion. No signup required. Just drop your .ico file and get .sun in seconds.
Batch Settings
お持ちのICOファイルをSUN形式へ変換する際、その意図や最終的なご利用シーンを想像されたことはありますか？アイコンファイルは、ウェブサイトやアプリケーションの顔となる小さな画像ですが、SUN形式は、特に専門的なグラフィックデザインや、DTP（デスクトップパブリッシング）の現場で、その色表現の豊かさや、解像度の柔軟性から重宝されています。日本のビジネスシーンでは、精緻なデザインが求められる場面が多く、また、漫画やアニメといったクリエイティブな分野では、色の再現性が作品の質を大きく左右します。この変換ツールは、そうした細やかなニーズに応えるための一助となるでしょう。元のICOが持つ情報を損なうことなく、SUN形式の持つ表現力を最大限に引き出し、新たな可能性を拓くお手伝いをいたします。
- DTPでの高解像度アイコン
- ビジネス資料向け精密グラフィック
- アニメ・ゲーム開発用素材
日本では、特に縦書き文書でのアイコン配置や、伝統的な色彩表現を重視するデザインにおいて、SUN形式の柔軟な色深度が評価されることがあります。また、特定のアートワーク制作環境でSUN形式が標準として用いられるケースも少なくありません。
About ICO to SUN Conversion
Whether you're one of the many photographers, designers, and content creators who work with ICO files daily, there comes a time when you need SUN instead. ICO is the icon format used for website favicons and Windows application icons.
Here's a typical scenario: you receive a .ico file but your project, platform, or client requires .sun. SUN is a widely used file format. Rather than searching for desktop software or wrestling with command-line tools, you can convert ICO to SUN online in seconds with CocoConvert.
This conversion is ideal when you When you need a SUN file. The conversion helps you convert between formats quickly.
Converting ICO to SUN maintains high quality with CocoConvert's optimised encoder settings.
Behind the scenes, CocoConvert uses industry-standard tools — FFmpeg for audio and video, Sharp for images, qpdf for documents. Your file is uploaded securely (TLS encryption), processed on isolated servers in Germany, and auto-deleted within 24 hours. No account, no watermark, no hidden fees.
Power users can batch convert up to 100 files simultaneously with a Pro subscription, making it practical for production workflows.
How to Convert ICO to SUN
- 1
Drop your file
Drag your .ico file onto the converter. Need to process many files? Add up to 5 at once (100 for Pro).
- 2
Set output to SUN
Pick SUN from the format list. The converter automatically tunes settings for the ICO→SUN pair.
- 3
Hit Convert
Processing happens server-side — your browser stays responsive. Most image files convert in under 10 seconds.
- 4
Download and use
Your .sun file is ready to plug into your workflow. Download it or share the link (expires in 24 hours).
What Happens When You Convert ICO to SUN
Your ICO file is decoded and re-encoded as SUN.
Your ICO file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in SUN format
The converted file is ready for download
Format Comparison
ICO
.ico file
| Extension | .ico |
| MIME Type | image/x-icon |
| Category | Image |
SUN
.sun file
| Extension | .sun |
| MIME Type | image/x-sun-raster |
| Category | Image |
Should You Convert ICO to SUN?
When to Convert
- ✓When you need a SUN file
Frequently Asked Questions
Who needs to convert ICO to SUN?
This conversion is commonly used by photographers, designers, and content creators. Typical reasons include convert between formats quickly and ensuring compatibility with downstream tools or platforms.
Can I convert ICO to SUN without losing quality?
Converting ICO to SUN maintains high quality with CocoConvert's optimised encoder settings.
Do I need to install software to convert ICO to SUN?
No. CocoConvert runs entirely in your browser — no downloads, no plugins. It works on macOS, Windows, Linux, iOS, and Android.
How many ICO files can I convert at once?
Free users can convert up to 5 files per hour. Pro subscribers get 100 files per hour with larger size limits (5 GB per file). Business API users can integrate batch conversion directly into their tools.
Is there an API for ICO to SUN conversion?
Yes. CocoConvert offers a Business API for automated conversions. It supports all the same format pairs available in the web interface, including ICO to SUN.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.