AVIF vs FITS — Comparison & Free Converter
Fast, instant AVIF to FITS conversion. No signup required. Just drop your .avif file and get .fits in seconds.
Batch Settings
写真やイラストを扱う際、ファイル形式の選択は最終的な品質や用途に大きく影響します。特に、近年注目を集めるAVIFはその高い圧縮効率と豊かな色再現性で多くのクリエイターから支持されています。しかし、専門的な天文学データ解析や科学研究、あるいは特定のアーカイブ用途においては、より厳密なデータ保持と互換性が求められるFITS形式が不可欠となる場面も少なくありません。このページでは、お手持ちのAVIFファイルを、天文学分野で広く利用される高精度なFITS形式へと安全かつ正確に変換する方法をご紹介します。大切な視覚データを、次のステップへとスムーズに移行させるための一助となれば幸いです。
- 天文台での研究データ共有
- 衛星画像データの長期保存
- 科学論文への画像添付
日本では、FITS形式は主に大学や研究機関での利用が中心ですが、高解像度画像を扱う産業分野でのデータ管理基準としても関心が高まっています。
About AVIF to FITS Conversion
AVIF or FITS — which format should you use? The answer depends on your needs. Here's a quick breakdown.
AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality. It has limited platform support. FITS is a widely used file format. It has common platform support.
So when should you convert AVIF to FITS? This conversion is ideal when you When you need a FITS file. This conversion helps you convert between formats quickly.
Converting AVIF 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 .avif 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 AVIF to FITS
- 1
Choose your AVIF file
Upload your .avif 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 AVIF to FITS
Your AVIF file is decoded and re-encoded as FITS.
Your AVIF 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
AVIF
.avif file
| Extension | .avif |
| MIME Type | image/avif |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert AVIF to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
Should I use AVIF or FITS?
It depends on your goal. AVIF 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 AVIF?
Not necessarily. Converting AVIF 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 AVIF 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 AVIF 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 AVIF 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.