CR2 vs FITS — Comparison & Free Converter
Fast, instant CR2 (CANON) to FITS conversion. No signup required. Just drop your .cr2 file and get .fits in seconds.
Batch Settings
您是否曾为那些珍贵的CR2照片文件，在需要进行专业天文学图像处理时感到力不从心？佳能相机捕获的CR2文件以其无损画质备受摄影师青睐，但当您的视线从地球转向浩瀚星空，希望将这些影像用于科学分析或深空合成时，FITS（Flexible Image Transport System）格式才是国际天文学界公认的标准。我们的在线转换工具，旨在帮助您轻松将高品质的CR2图像转换为FITS格式，让您的摄影作品无缝对接天文学研究与探索。无论是天文爱好者记录的星野，还是专业设备捕获的深空天体，通过简便的几步操作，即可获得符合天文数据处理规范的FITS文件，开启您的宇宙探索之旅。
- 微信分享天文奇观
- 手游天文背景素材
- 家用天文台数据归档
在中国大陆及周边地区，随着天文科普的普及和个人天文设备的增多，将CR2转换为FITS的需求日益增长，尤其是在教育和非专业科研领域，FITS格式的兼容性对于数据交换和共享至关重要。
About CR2 (CANON) to FITS Conversion
CR2 or FITS — which format should you use? The answer depends on your needs. Here's a quick breakdown.
CR2 is Canon's RAW photo format containing unprocessed sensor data for maximum editing flexibility. It has limited platform support. FITS is a widely used file format. It has common platform support.
So when should you convert CR2 to FITS? This conversion is ideal when you When you need a FITS file. This conversion helps you convert between formats quickly.
Converting CR2 to FITS maintains high quality with CocoConvert's optimised encoder settings.
If you've decided FITS is the right choice, CocoConvert makes the conversion effortless. Upload your .cr2 file, pick FITS, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert CR2 (CANON) to FITS
- 1
Choose your CR2 file
Upload your .cr2 file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to FITS
Select .fits from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your FITS file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert CR2 (CANON) to FITS
Your CR2 file is decoded and re-encoded as FITS.
Your CR2 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
CR2 (Canon)
.cr2 file
| Extension | .cr2 |
| MIME Type | image/x-canon-cr2 |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert CR2 (CANON) to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
Should I use CR2 or FITS?
It depends on your goal. CR2 preserves full quality. FITS preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is FITS higher quality than CR2?
Not necessarily. Converting CR2 to FITS maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert CR2 to FITS on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for CR2 to FITS?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for CR2 to FITS?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.