DCM vs SIXEL — Comparison & Free Converter
Fast, instant DICOM to SIXEL conversion. No signup required. Just drop your .dcm file and get .sixel in seconds.
Batch Settings
DICOM（Digital Imaging and Communications in Medicine）は、医療画像を扱う上で不可欠な国際標準フォーマットですね。しかし、これをウェブページや古いシステム、あるいは特定のドキュメントに組み込む際、互換性の壁に直面することが少なくありません。そこで、汎用性の高い画像形式であるSIXELへの変換が役立ちます。SIXELは、テキスト端末上でも画像を表現できる独特のフォーマットで、特にレガシーシステムとの連携や、シンプルなグラフィック表示においてその真価を発揮します。この変換ツールは、DICOMデータの持つ医療情報を失うことなく、より多くの環境でその内容を閲覧・共有できるよう設計されています。複雑な設定は不要で、直感的な操作でスムーズに変換プロセスを完了できますので、ぜひご活用ください。
- 医療報告書の簡易プレビュー
- 古い社内システムでの画像表示
- ウェブサイトへの医療画像掲載
日本の医療現場では、電子カルテシステムが多様であるため、DICOMビューアを持たない環境での画像共有にSIXELが有効な場合があります。また、縦書き文書への画像挿入時も、SIXELの単純な構造が処理を簡素化する可能性があります。
About DICOM to SIXEL Conversion
DCM or SIXEL — which format should you use? The answer depends on your needs. Here's a quick breakdown.
DCM is a widely used file format. It has common platform support. SIXEL is a widely used file format. It has common platform support.
So when should you convert DCM to SIXEL? This conversion is ideal when you When you need a SIXEL file. This conversion helps you convert between formats quickly.
Converting DCM to SIXEL maintains high quality with CocoConvert's optimised encoder settings.
If you've decided SIXEL is the right choice, CocoConvert makes the conversion effortless. Upload your .dcm file, pick SIXEL, 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 DICOM to SIXEL
- 1
Choose your DCM file
Upload your .dcm file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to SIXEL
Select .sixel 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 SIXEL file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert DICOM to SIXEL
Your DCM file is decoded and re-encoded as SIXEL.
Your DCM file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in SIXEL format
The converted file is ready for download
Format Comparison
DICOM
.dcm file
| Extension | .dcm |
| MIME Type | application/dicom |
| Category | Image |
SIXEL
.sixel file
| Extension | .sixel |
| MIME Type | image/x-sixel |
| Category | Image |
Should You Convert DICOM to SIXEL?
When to Convert
- ✓When you need a SIXEL file
Frequently Asked Questions
Should I use DCM or SIXEL?
It depends on your goal. DCM preserves full quality. SIXEL preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is SIXEL higher quality than DCM?
Not necessarily. Converting DCM to SIXEL 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 DCM to SIXEL 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 DCM to SIXEL?
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 DCM to SIXEL?
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.