FITS Won't Open? Convert to PGM Instantly
Fast, instant FITS to PGM conversion. No signup required. Just drop your .fits file and get .pgm in seconds.
Batch Settings
天文爱好者和图像处理专家们，您是否曾为FITS格式的星空图或科研数据，无法直接在日常应用中流畅预览、分享而感到困扰？FITS文件承载着宇宙的深邃信息，但在通用性方面，PGM（Portable Graymap）以其简洁和广泛兼容性，在图像处理领域拥有独特的地位。将FITS转换为PGM，不仅能让您的天文影像摆脱专业软件的束缚，更能在多种平台上轻松查看、编辑，甚至作为游戏材质或手机壁纸，让这份宇宙之美触手可及。我们的转换工具，正是为了帮您实现这一无缝衔接，让高深的科学数据，也能以最友好的方式呈现。操作简单，转换迅速，即刻体验FITS到PGM的便捷转化，开启您的图像新旅程。
- 微信分享天文照片
- 游戏开发灰度图素材
- 手机壁纸制作
在华语区，PGM因其文件结构简单，常被用于教学、科研图像处理的入门格式，尤其是在游戏开发和移动端图像渲染中，作为一种高效的灰度图载体，其应用场景日益广泛。
About FITS to PGM Conversion
Dealing with a FITS file that won't open on your device? You're not alone — FITS compatibility issues are one of the most common reasons people search for a file converter. FITS is a widely used file format.
The fix is simple: convert your FITS to PGM. PGM 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 FITS to PGM maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your FITS 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 PGM 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 FITS to PGM
- 1
Add your FITS file
Drag and drop your .fits file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick PGM output
Select .pgm 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 .pgm file. For batch jobs, download all at once as a zip.
What Happens When You Convert FITS to PGM
Your FITS file is decoded and re-encoded as PGM.
Your FITS file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in PGM format
The converted file is ready for download
Format Comparison
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
PGM
.pgm file
| Extension | .pgm |
| MIME Type | image/x-portable-graymap |
| Category | Image |
Should You Convert FITS to PGM?
When to Convert
- ✓When you need a PGM file
Frequently Asked Questions
Why won't my FITS file open?
FITS files may not open if your device lacks the right codec or application. Converting to PGM — a more widely supported format — usually resolves this. PGM is a widely used file format.
Is it safe to convert FITS to PGM 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 FITS to PGM?
Converting FITS to PGM 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 FITS 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 FITS to PGM 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.