G3 Won't Open? Convert to FITS Instantly
Fast, instant G3 (FAX) to FITS conversion. No signup required. Just drop your .g3 file and get .fits in seconds.
Batch Settings
在浩瀚的数字世界里，文件格式的转换是家常便饭。您手头的G3图像文件，或许承载着重要的文档扫描、传真记录，又或是老旧设备导出的珍贵画面。而FITS格式，作为天文学和科学数据处理领域的黄金标准，以其强大的元数据支持和高精度特性，成为许多专业人士和科研机构的首选。将G3转换为FITS，不仅仅是格式上的变动，更是为了让您的数据在更广阔、更专业的平台中焕发新生，无论是进行深度的科学分析，还是在特定的专业软件中无缝流转，都能确保信息的完整性和准确性。我们的工具旨在提供一个高效、可靠的转换方案，让您的G3文件轻松迈入科学数据的新天地。
- 天文爱好者处理星空图
- 科研机构共享实验数据
- 历史文档数字化归档
在大中华区，G3格式常用于老式传真机和部分文档扫描仪。将其转换为FITS，可方便与国际科学社区接轨，或用于专业软件如IRAF、SAOImage DS9等进行后续处理。
About G3 (FAX) to FITS Conversion
Dealing with a G3 file that won't open on your device? You're not alone — G3 compatibility issues are one of the most common reasons people search for a file converter. G3 is a widely used file format.
The fix is simple: convert your G3 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 G3 to FITS maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your G3 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 G3 (FAX) to FITS
- 1
Add your G3 file
Drag and drop your .g3 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 G3 (FAX) to FITS
Your G3 file is decoded and re-encoded as FITS.
Your G3 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
G3 (FAX)
.g3 file
| Extension | .g3 |
| MIME Type | image/g3fax |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert G3 (FAX) to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
Why won't my G3 file open?
G3 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 G3 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 G3 to FITS?
Converting G3 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 G3 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 G3 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.