How to Convert DNG to SUN — Quick & Free
Fast, instant DNG (ADOBE) to SUN conversion. No signup required. Just drop your .dng file and get .sun in seconds.
Batch Settings
DNG（Digital Negative）は、デジタルカメラのRAWデータ形式の一つとして、撮影時の情報を損なうことなく保存できるため、多くのプロフェッショナルやハイアマチュアに選ばれています。しかし、この豊富な情報を活用しつつ、特定の用途や古いシステム、あるいはウェブ上での軽量な表示に対応させるためには、別の形式への変換が不可欠となる場合があります。特に、日本におけるデジタルコンテンツの多様な利用シーンでは、DNGの持つ高品質なデータを、より汎用性の高い形式へとスムーズに移行させる技術が求められます。当社の変換ツールは、DNGの持つポテンシャルを最大限に引き出しつつ、お客様のニーズに合わせた最適な出力形式へと変換するお手伝いをいたします。
- 漫画・アニメ制作における素材連携
- ビジネス文書への高品質画像挿入
- 縦書きレイアウトへの画像最適化
日本では、特にフォントの美しさや細部の表現にこだわる文化があるため、DNGから変換された画像の品質維持は非常に重要視されます。また、古いシステムや独自の画像処理ソフトウェアとの互換性も考慮されることが多いです。
About DNG (ADOBE) to SUN Conversion
Short answer: yes, you can convert DNG to SUN online for free, and quality is well preserved with the right settings. Just upload your .dng file to CocoConvert, pick SUN as the output, and click Convert. The whole process takes seconds.
Now for the details. DNG (Digital Negative) is Adobe's open RAW format designed for long-term archival of digital photographs. SUN is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your DNG file is decoded and re-encoded as SUN. Converting DNG to SUN maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert DNG (ADOBE) to SUN
- 1
1. Upload DNG
Drop your .dng file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select SUN
Choose .sun from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .sun file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert DNG (ADOBE) to SUN
Your DNG file is decoded and re-encoded as SUN.
Your DNG file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in SUN format
The converted file is ready for download
Format Comparison
DNG (Adobe)
.dng file
| Extension | .dng |
| MIME Type | image/x-adobe-dng |
| Category | Image |
SUN
.sun file
| Extension | .sun |
| MIME Type | image/x-sun-raster |
| Category | Image |
Should You Convert DNG (ADOBE) to SUN?
When to Convert
- ✓When you need a SUN file
Frequently Asked Questions
Is DNG to SUN conversion free?
Yes. CocoConvert offers free DNG to SUN conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is DNG to SUN conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded DNG file and the converted SUN file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting DNG to SUN lose quality?
Converting DNG to SUN maintains high quality with CocoConvert's optimised encoder settings.
Can I convert SUN back to DNG?
Yes, CocoConvert supports SUN to DNG conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.