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SUN to KWD Converter

Convert SUN images into KWD documents online

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Simple Workflow

Three steps: upload SUN data, pick KWD, download the result. No technical knowledge required — Convertio handles everything.

Secure Handling

All SUN uploads are deleted upon conversion, and KWD output files are scrubbed from servers within 24 hours — your privacy is non-negotiable.

Cloud Conversion

All processing runs on remote servers — no local resources consumed. Upload your SUN data and let the cloud deliver your KWD output.

How to convert SUN to KWD

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose kwd or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your kwd file right afterwards

About formats

SUN is a raster image format associated with Sun Microsystems workstations, encompassing both the Sun Raster format (.ras) and the Sun Icon format used for window system icons and cursors on SunOS and Solaris systems. Sun Raster files, identifiable by their 0x59a66a95 magic number, store bitmap images in 1-bit monochrome, 8-bit indexed color, 24-bit BGR, or 32-bit XBGR modes, with optional run-length encoding compression and a 32-byte header. The Sun Icon subset is a simpler text-based format used for small monochrome bitmaps — window icons, cursor images, and toolbar graphics — stored as C-language data arrays that could be directly compiled into X Window and SunView applications. These icon files begin with a comment block specifying width, height, and optionally hot spot coordinates (for cursor images), followed by hexadecimal pixel values in a format readable by both the C compiler and the iconedit tool. Sun workstations running SunOS and later Solaris were foundational platforms for Unix computing, networking, and the early internet, and the SUN image formats were integral to their graphical environments. One advantage is the format's dual text/binary nature: Sun Icons are valid C source code that can be #included directly into applications, a practical approach to resource embedding that predates modern asset management systems. The Sun Raster variant's simplicity provides another strength — the 32-byte header and straightforward encoding make it one of the easiest binary image formats to parse. SUN format files are supported by ImageMagick, GIMP, XnView, and Unix image viewing tools.
Developer: Sun Microsystems
Initial release: 1982
KWD is the native document format of KWord, the word processor component of KOffice (later renamed Calligra Suite), developed by the KDE community with its first stable release in KOffice 1.0 in 2000. KWord distinguished itself from other word processors through a frame-based layout model where text, images, and other content existed in independent frames that could be positioned freely on the page, similar to desktop publishing applications — a departure from the linear text-flow approach used by most word processors. KWD files store document content in a compressed XML format that describes the frame hierarchy, text content with formatting markup, paragraph styles, page dimensions, headers, footers, and embedded media. The format uses a ZIP container packaging the XML document alongside any referenced images and resources. One advantage was the flexible frame-based layout — users could position text and image frames independently on the page, enabling newsletter-style layouts and creative document designs without switching to a dedicated DTP application. The open XML structure is another benefit, making KWD files transparent and accessible to automated processing. KWord was included in several Linux distributions as part of the KDE desktop environment during the 2000s. The project was eventually discontinued in favor of Calligra Words, which adopted the ODF standard. KWD files can be opened with legacy KOffice installations or converted through document conversion tools.
Developer: KDE
Initial release: 2000

Frequently Asked Questions

Why convert SUN to KWD?

SUN was built for Sun Microsystems hardware that is long discontinued. KWD offers the broad compatibility modern workflows demand.

What programs open KWD files?

KWD files can be opened in Calligra Words (successor to KWord), LibreOffice, and KDE office applications.

What platforms support this converter?

Convertio runs in any modern web browser — Chrome, Firefox, Safari, Edge — on Windows, macOS, Linux, Android, and iOS devices.

Why choose KWD as the output?

KWD offers KDE office format, legacy, frame-based layout. Embedding SUN image data into a KWD document makes it easy to share and print.

Is the conversion process fast?

Yes — SUN to KWD conversion on Convertio usually completes in seconds. Cloud-based processing handles the work without taxing your device.