ICO to FITS — Format Comparison & Online Converter
Fast, instant ICO to FITS conversion. No signup required. Just drop your .ico file and get .fits in seconds.
Batch Settings
お持ちのICOファイルをFITS形式へ変換する際、どのような課題に直面されていますか？ このページでは、高精細な天体画像解析や科学データ処理に不可欠なFITS形式への変換を、簡単かつ正確に行うための情報を提供します。特に、日本の研究機関やアニメーション制作現場など、ピクセル単位の厳密さが求められる環境において、ICOの持つアイコンとしての特性をFITSのデータ整合性へと橋渡しすることは、時に専門的な知識を要します。 当ツールは、そうした専門的な要求に応えつつ、直感的な操作で高品質な変換を実現します。大切なデータを次のステップへと進めるために、ぜひご活用ください。
- 天文台での観測データ整理
- 衛星画像解析の初期工程
- 科学シミュレーション結果の保存
日本では、FITS形式が特に天文学分野で広く利用されており、国立天文台をはじめとする研究機関でのデータ共有やアーカイブに不可欠な形式となっています。ICOからの変換は稀ですが、特定の研究者がアイコン化した観測計画図などをFITSデータと統合する際に需要が発生することがあります。
About ICO to FITS Conversion
ICO (introduced 1985) and FITS are both image formats, but they differ in important ways. ICO is the icon format used for website favicons and Windows application icons. FITS is a widely used file format.
When you convert ICO to FITS, the goal is to convert between formats quickly. Converting ICO to FITS maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your ICO file is decoded and re-encoded as FITS. The conversion involves 4 steps: (1) your ico file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in fits format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a FITS file. For the opposite direction, CocoConvert also supports FITS to ICO conversion.
How to Convert ICO to FITS
- 1
Upload .ico file
Select your ICO file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .fits
Set FITS as the output format. The converter uses optimal settings based on the ICO→FITS conversion profile.
- 3
Convert
The server-side engine decodes your ICO file and re-encodes it as FITS. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .fits file. Multiple output files can be downloaded together.
What Happens When You Convert ICO to FITS
Your ICO file is decoded and re-encoded as FITS.
Your ICO file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in FITS format
The converted file is ready for download
Format Comparison
ICO
.ico file
| Extension | .ico |
| MIME Type | image/x-icon |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert ICO to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
What is the difference between ICO and FITS?
ICO is the icon format used for website favicons and Windows application icons. FITS is a widely used file format.
Does ICO to FITS conversion affect quality?
Converting ICO to FITS maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, ICO or FITS?
ICO uses lossless compression. FITS is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does ICO to FITS conversion take?
Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is ICO or FITS better for long-term storage?
ICO is better for archival since it's lossless.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.