CUR to RAS — Format Comparison & Online Converter
Fast, instant CUR to RAS conversion. No signup required. Just drop your .cur file and get .ras in seconds.
Batch Settings
日頃より様々な画像形式に触れる中で、特定の用途に合わせてファイルを変換する機会は少なくないでしょう。特に、WindowsのカーソルファイルであるCUR形式と、サン・マイクロシステムズが開発したラスター画像形式であるRASとの間で変換が必要となる場合、その作業は一見複雑に思えるかもしれません。しかし、ご安心ください。私たちのツールは、そうした変換をスムーズかつ効率的に行うためのものです。繊細なデザインを損なうことなく、また、ビジネスの現場で求められる迅速な対応を可能にするために、この変換プロセスを分かりやすく、そして使いやすく設計しました。ピクセル単位の表現が重要な場面で、両形式の特性を最大限に活かせるよう、細部にまでこだわっています。このページでは、CURファイルをRAS形式へ、あるいはその逆方向への変換が、いかに簡単であるかをご紹介します。
- アニメーションカーソルのウェブ素材化
- ビジネス資料への組み込み
- 縦書きデザイン要素の調整
日本のデザイン業界では、特に縦書き文化やフォントの選択肢が豊富であるため、CURのような小さな画像でも、RASのような汎用性の高い形式に変換する際、細かなディテールの保持が重視される傾向にあります。
About CUR to RAS Conversion
CUR and RAS are both image formats, but they differ in important ways. CUR is a widely used file format. RAS is a widely used file format.
When you convert CUR to RAS, the goal is to convert between formats quickly. Converting CUR to RAS maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your CUR file is decoded and re-encoded as RAS. The conversion involves 4 steps: (1) your cur file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in ras format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a RAS file. For the opposite direction, CocoConvert also supports RAS to CUR conversion.
How to Convert CUR to RAS
- 1
Upload .cur file
Select your CUR file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .ras
Set RAS as the output format. The converter uses optimal settings based on the CUR→RAS conversion profile.
- 3
Convert
The server-side engine decodes your CUR file and re-encodes it as RAS. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .ras file. Multiple output files can be downloaded together.
What Happens When You Convert CUR to RAS
Your CUR file is decoded and re-encoded as RAS.
Your CUR file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in RAS format
The converted file is ready for download
Format Comparison
CUR
.cur file
| Extension | .cur |
| MIME Type | image/x-icon |
| Category | Image |
RAS
.ras file
| Extension | .ras |
| MIME Type | image/x-sun-raster |
| Category | Image |
Should You Convert CUR to RAS?
When to Convert
- ✓When you need a RAS file
Frequently Asked Questions
What is the difference between CUR and RAS?
CUR is a widely used file format. RAS is a widely used file format.
Does CUR to RAS conversion affect quality?
Converting CUR to RAS maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, CUR or RAS?
CUR is a common image format. RAS is widely supported. The better choice depends on whether you prioritize file size or quality.
How long does CUR to RAS conversion take?
Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is CUR or RAS better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.