FTS Won't Open? Convert to FITS Instantly
Fast, instant FTS to FITS conversion. No signup required. Just drop your .fts file and get .fits in seconds.
Batch Settings
您是否曾遇到这样的情况：手头一份重要的FTS文件，却发现许多常用的图像处理软件或天文分析工具对它“不感冒”？FTS，作为天文领域常用的数据格式，承载着星辰大海的秘密，但在日常分享或跨平台协作时，其兼容性却常常成为一道难题。别担心，我们将为您提供一个简便、高效的解决方案，让您的FTS文件能够轻松转换为更通用、更易于处理的FITS格式。FITS不仅在天文界应用广泛，其数据结构也更利于后续的图像处理、数据分析乃至在不同科研平台间的无缝对接。现在，就让我们一起，为您的星空数据插上自由流动的翅膀吧！
- 天文爱好者分享观测数据
- 科研机构内部数据交换
- 教育领域科普展示
在大陆、台湾及新加坡地区，FITS格式在天文科研和教育领域是绝对的主流，FTS到FITS的转换能显著提高数据流通性和软件兼容性，尤其是在与国际天文社区接轨时，FITS的通用性优势更为明显。
About FTS to FITS Conversion
Dealing with a FTS file that won't open on your device? You're not alone — FTS compatibility issues are one of the most common reasons people search for a file converter. FTS is a widely used file format.
The fix is simple: convert your FTS to FITS. FITS is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting FTS to FITS maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your FTS file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a FITS file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert FTS to FITS
- 1
Add your FTS file
Drag and drop your .fts file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick FITS output
Select .fits as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .fits file. For batch jobs, download all at once as a zip.
What Happens When You Convert FTS to FITS
Your FTS file is decoded and re-encoded as FITS.
Your FTS 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
FTS
.fts file
| Extension | .fts |
| MIME Type | image/fits |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert FTS to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
Why won't my FTS file open?
FTS files may not open if your device lacks the right codec or application. Converting to FITS — a more widely supported format — usually resolves this. FITS is a widely used file format.
Is it safe to convert FTS to FITS online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting FTS to FITS?
Converting FTS to FITS maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my FTS file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert FTS to FITS on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.