RAS Won't Open? Convert to HRZ Instantly
Fast, instant RAS to HRZ conversion. No signup required. Just drop your .ras file and get .hrz in seconds.
Batch Settings
ラスターファイル形式の一つであるRAS（Sun Raster）ファイルを、現代のデジタル環境に最適化されたHRZ（Hitachi ZV Format）へと変換するサービスへようこそ。古くからのシステムで作成された図面や画像データを、最新の表示環境や編集ツールでスムーズに扱いたいというご要望は少なくありません。特に、高解像度を保ちつつ、ファイルサイズを効率的に管理する必要がある場面で、この変換は大きな意味を持ちます。本サービスは、お客様の大切なデータを品質を損なうことなく、より汎用性の高い形式へと橋渡しすることを目指しています。複雑な設定は不要で、直感的な操作で変換を完了できますので、ぜひご活用ください。
- 古い設計図のデジタル化
- ビジネス文書への画像挿入
- マンガ原稿のフォーマット調整
RAS形式は、過去のCADシステムや一部の業務用スキャナーで利用されていましたが、HRZは日立製のプリンターやシステムでよく用いられるため、特に企業間でのデータ交換時にこの変換が求められることがあります。
About RAS to HRZ Conversion
Dealing with a RAS file that won't open on your device? You're not alone — RAS compatibility issues are one of the most common reasons people search for a file converter. RAS is a widely used file format.
The fix is simple: convert your RAS to HRZ. HRZ 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 RAS to HRZ maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your RAS 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 HRZ 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 RAS to HRZ
- 1
Add your RAS file
Drag and drop your .ras file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick HRZ output
Select .hrz 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 .hrz file. For batch jobs, download all at once as a zip.
What Happens When You Convert RAS to HRZ
Your RAS file is decoded and re-encoded as HRZ.
Your RAS file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in HRZ format
The converted file is ready for download
Format Comparison
RAS
.ras file
| Extension | .ras |
| MIME Type | image/x-sun-raster |
| Category | Image |
HRZ
.hrz file
| Extension | .hrz |
| MIME Type | image/x-hrz |
| Category | Image |
Should You Convert RAS to HRZ?
When to Convert
- ✓When you need a HRZ file
Frequently Asked Questions
Why won't my RAS file open?
RAS files may not open if your device lacks the right codec or application. Converting to HRZ — a more widely supported format — usually resolves this. HRZ is a widely used file format.
Is it safe to convert RAS to HRZ 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 RAS to HRZ?
Converting RAS to HRZ 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 RAS 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 RAS to HRZ 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.