SUN to CGM conversion is the process of transforming a SUN raster image file (a bitmap format historically used on Sun Microsystems workstations, typically with a .sun or .ras extension) into a CGM (Computer Graphics Metafile) vector/structured graphics format. This conversion re-encodes or traces raster pixel data into a CGM representation so the image can be embedded, scaled, or used in technical documentation and CAD-like workflows.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
WebP has quietly become the default image format of the modern web, delivering 25-35% smaller files than JPG and PNG with universal browser support. This 2026 guide covers current adoption stats, browser compatibility, WordPress integration, conversion workflows, and when to choose WebP over AVIF for optimal Core Web Vitals performance.
Read guide →Not sure whether to save your image as PNG or JPG? This detailed comparison covers compression, transparency, file size, web performance, and real-world use cases so you can pick the right format every time — with conversion links when you need to switch.
Read guide →Learn how to convert HEIC to JPG for maximum compatibility. This guide explains what HEIC is, why iPhones use it, the key differences between HEIC and JPG, and walks through every conversion method including online tools, iPhone settings, Windows, and Mac.
Read guide →Drag your .SUN file from your computer or use the browse function.
Confirm .cgm as the selected destination format.
Click "Convert" and download your converted .CGM file once ready.
SUN files generally use the image/x-sun-raster MIME type and are common in older Unix-based systems for raster images. CGM files use the application/cgm MIME type and serve as standard vector graphic files in technical drawings and graphical data interchange. CGM supports multiple codecs and encoding standards to ensure compatibility across platforms.
The CGM (.CGM) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like SUN.
While specific technical details aren't available here, CGM files generally serve the purpose of storing image effectively within their domain.
Easily convert your SUN files to CGM format using our online SUN to CGM converter. Designed for users needing quick and efficient file transformations, our tool supports seamless conversion without the need for complex software.
SUN files are typically raster-based images with limited editing capabilities, while CGM files are vector graphics ideal for scaling without loss of quality. CGM offers broader support in technical and engineering applications compared to SUN. Choosing CGM over SUN improves file versatility and integration in professional environments.
Keep source SUN files under 250MB for smooth online conversion; very large rasters slow tracing and increase memory use.
For best quality preserve original resolution and choose lossless tracing or high-detail vectorization to avoid detail loss when converting raster SUN to CGM.
For batches, process files in groups and use server-side or desktop tools to avoid browser timeouts; automated scripts with CLI converters speed large-scale conversions.
Expect limitations: SUN is a pure raster format so converting to true editable vector CGM requires raster-to-vector tracing, which may approximate curves and lose some photographic detail.
Love how quick and easy the SUN to CGM conversion was.
Sarah T.
Designer
This converter helped me integrate SUN images into my CAD projects seamlessly.
John M.
Engineer
The online tool saved me hours when converting multiple SUN files to CGM.
Emily R.
Marketing
Start your free SUN to CGM conversion now.
Drag your file here to to upload.
Up to 250MB
If your SUN file contains photographic content, consider embedding the raster inside a CGM as a retained image rather than full vectorization to preserve visual fidelity.