PNG Won't Open? Convert to FTS Instantly
Fast, instant PNG to FTS conversion. No signup required. Just drop your .png file and get .fts in seconds.
Batch Settings
在图像处理的世界里，PNG以其无损压缩和对透明度的良好支持，深受大家喜爱。它记录了画面丰富的细节，是许多设计和内容创作的首选。然而，当这些精美的PNG图片需要进入更为专业或特定的应用场景时，比如科学图像分析、天文数据处理，或是某些专业软件的数据交换，PNG格式可能就显得力不从心了。FTS（或称FIT、FITS）作为天文学和科学图像领域广泛认可的标准，能够承载更为复杂的数据结构和元信息，远超普通图片格式。本工具旨在帮助您将日常所见的PNG图像，便捷地转换为FTS格式，打通从可视化到专业分析的桥梁，让您的图像数据在更多领域发挥其独特价值。
- 微信分享的游戏截图转专业分析
- 天文爱好者自行拍摄星空图分析
- 科研院所图像数据归档与共享
在中国大陆及华语区，FTS格式虽然不如PNG普及，但在高校、科研机构及天文爱好者圈层中，其作为专业数据载体的地位不可替代。将PNG转为FTS，能有效桥接大众图像与专业分析软件，尤其方便在移动端（如微信）获取的图像数据进行后续处理。
About PNG to FTS Conversion
Dealing with a PNG file that won't open on your device? You're not alone — PNG compatibility issues are one of the most common reasons people search for a file converter. PNG uses lossless compression and supports transparency, making it perfect for graphics, logos, and screenshots.
The fix is simple: convert your PNG to FTS. FTS 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 PNG to FTS maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your PNG 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 FTS 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 PNG to FTS
- 1
Add your PNG file
Drag and drop your .png file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick FTS output
Select .fts 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 .fts file. For batch jobs, download all at once as a zip.
What Happens When You Convert PNG to FTS
Your PNG file is decoded and re-encoded as FTS.
Your PNG file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in FTS format
The converted file is ready for download
Format Comparison
PNG
.png file
| Extension | .png |
| MIME Type | image/png |
| Category | Image |
FTS
.fts file
| Extension | .fts |
| MIME Type | image/fits |
| Category | Image |
Should You Convert PNG to FTS?
When to Convert
- ✓When you need a FTS file
Frequently Asked Questions
Why won't my PNG file open?
PNG files may not open if your device lacks the right codec or application. Converting to FTS — a more widely supported format — usually resolves this. FTS is a widely used file format.
Is it safe to convert PNG to FTS 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 PNG to FTS?
Converting PNG to FTS 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 PNG 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 PNG to FTS 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.