SUN vs JP2 — Comparison & Free Converter
Fast, instant SUN to JPEG 2000 conversion. No signup required. Just drop your .sun file and get .jp2 in seconds.
Batch Settings
About SUN to JPEG 2000 Conversion
SUN or JP2 — which format should you use? The answer depends on your needs. Here's a quick breakdown.
SUN is a widely used file format. It has common platform support. JP2 (JPEG 2000) offers wavelet-based compression with better quality than JPEG at the same bit rate. It has limited platform support.
So when should you convert SUN to JP2? This conversion is ideal when you When you need a JP2 file. This conversion helps you convert between formats quickly.
Converting SUN to JP2 maintains high quality with CocoConvert's optimised encoder settings.
If you've decided JP2 is the right choice, CocoConvert makes the conversion effortless. Upload your .sun file, pick JP2, 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 SUN to JPEG 2000
- 1
Choose your SUN file
Upload your .sun file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to JP2
Select .jp2 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 JP2 file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert SUN to JPEG 2000
Your SUN file is decoded and re-encoded as JP2.
Your SUN file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in JP2 format
The converted file is ready for download
Format Comparison
SUN
.sun file
| Extension | .sun |
| MIME Type | image/x-sun-raster |
| Category | Image |
JPEG 2000
.jp2 file
| Extension | .jp2 |
| MIME Type | image/jp2 |
| Category | Image |
Should You Convert SUN to JPEG 2000?
When to Convert
- ✓When you need a JP2 file
Frequently Asked Questions
Should I use SUN or JP2?
It depends on your goal. SUN preserves full quality. JP2 preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is JP2 higher quality than SUN?
Not necessarily. Converting SUN to JP2 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 SUN to JP2 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 SUN to JP2?
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 SUN to JP2?
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.