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
在数字化图像处理的世界里，格式转换是家常便饭。您手中的ICO图标，或许正承载着某个应用的独特标识，或者游戏里的小小像素精华。然而，当这些精巧的ICO文件需要更专业的科学分析、天文观测数据处理，或是与某些特定的图形工作流对接时，FITS（Flexible Image Transport System）格式就显得尤为重要。FITS以其强大的元数据支持和高精度图像存储能力，在科研领域独树一帜。我们的在线转换工具，旨在为您提供一个无缝、高效的桥梁，让您的ICO图标轻松蜕变为FITS文件，开启新的应用可能。无论是为了学术研究的数据统一，还是为了特定软件的兼容性需求，我们都致力于让这一过程变得简单快捷。
- 游戏资产高精度归档
- 微信小程序图标科研分析
- 天文爱好者图像数据准备
在大陆及台湾地区，ICO文件常见于传统桌面应用图标，而FITS则多见于高校及科研机构，两者之间的转换需求通常源于专业领域的特定工作流。
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.