SUN to TIFF Converter
FileFlip converts SUN to TIFF entirely inside your browser, using ImageMagick compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert a SUN file to TIFF?#
- Drop your SUN file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to TIFF and the conversion starts on its own. FileFlip downloads 14.1 MB of WebAssembly the first time and nothing after that, then runs ImageMagick on your own machine.
- Save the TIFF file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting SUN to TIFF lose quality?#
No. Converting SUN to TIFF writes the data out again without discarding any of it, so nothing that was in the SUN file is lost on the way. What changes is the size of the file, not what is inside it.
Is it safe to convert SUN files online?#
Yes, because nothing is uploaded. FileFlip converts SUN files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What SUN to TIFF actually does to the file#
Converting SUN to TIFF runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, writes the data out again without discarding any of it.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: SUN → TIFF |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Lossless |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What is a SUN file?#
A SUN file is a Sun Raster bitmap, the same raw framebuffer image format Sun Microsystems shipped on SunOS workstations, saved under the alternate .sun extension some raster-image tools use in place of the identical .ras.
Recognise a .sun file as a Sun Raster image if it turns up alongside .ras files from the same legacy Solaris export or archive.
Convert SUN to PNG or TIFF for any modern use, since the .sun extension gets even less software recognition than .ras.
What is a TIFF file?#
A TIFF file stores one or more raster images, usually uncompressed or losslessly compressed, inside a tagged container that scanners, printers, and publishing software rely on to keep exact pixel data intact through repeated edits.
Use TIFF for scanned documents, print production, and archival photography, where preserving every pixel losslessly matters more than file size.
Convert TIFF to JPEG or PNG when the image needs to go on the web or be shared casually, since browsers cannot display TIFF and the files are far bigger than screen viewing requires.
SUN to TIFF questions people ask#
What is a SUN file?
A SUN file is a Sun Raster bitmap, the simple framebuffer image format Sun Microsystems used on SunOS and Solaris workstations, identified by a fixed magic number at the start of the file rather than by its extension.
Is SUN the same format as RAS?
Yes, a SUN file and a RAS file are the identical Sun Raster format. The two extensions exist because different tools over the years registered the format under different names, not because the files differ in any way.
Can I just rename a .sun file to .ras?
Renaming a .sun file to .ras works, because the two extensions point at the same byte-for-byte format and most decoders identify a Sun Raster file by its magic number rather than its extension. Some tools that only recognise .ras will open the renamed file without issue.
What is a TIFF file used for?
TIFF files are used for scanned documents, professional photography, and print production, because the format can store an image with no compression loss at all. Publishing software, print shops, and archives favor it precisely because a TIFF looks identical no matter how many times it is opened and resaved.