CDT to DDS Converter

Transform CDT template graphics to DDS online free

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From CDT to DDS in moments — Convertio extracts your CorelDRAW template content into a portable DirectDraw Surface texture result.

File Security

Your data stays safe. Convertio deletes CDT source files after conversion and removes results within 24 hours.

Fast Results

Conversion runs entirely on Convertio servers — your device stays fast while CDT templates are transformed.

How to convert CDT to DDS

1

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

2

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

3

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

About formats

CDT (CorelDRAW Template) is a template file format used by CorelDRAW, Corel Corporation's vector graphics editor available since January 1989. A CDT file is structurally identical to a standard CDR document — sharing the same RIFF-based container, vector object types, color definitions, and page layout capabilities — but is designated as a reusable starting point for new designs rather than a finished artwork file. When opened in CorelDRAW, a CDT creates a new untitled document pre-populated with the template's content, leaving the original template unchanged for repeated use. This workflow mirrors the template model found in office productivity suites, adapted for graphic design. CDT files commonly contain pre-built layouts for business cards, brochures, letterheads, certificates, posters, and other standardized print materials, complete with placeholder text, guide lines, bleed areas, and properly configured color spaces for print output. One advantage is workflow consistency — design teams can distribute branded templates ensuring every new document starts with correct dimensions, margins, fonts, and color palettes aligned to corporate identity standards. The format also saves significant setup time: rather than configuring document properties and recreating layout elements from scratch, designers begin with a production-ready foundation. Corel ships hundreds of CDT templates with CorelDRAW installations, and the format is supported across CorelDRAW versions with the same compatibility considerations as CDR.
Developer: Corel Corporation
Initial release: 1989
DDS (DirectDraw Surface) is a container format for storing compressed and uncompressed textures, cube maps, volume textures, and mipmap chains, introduced by Microsoft with DirectX 7.0 on September 22, 1999. DDS files are designed for GPU-native consumption: the pixel data is stored in formats that graphics hardware can decompress directly during rendering — primarily S3TC/DXTn block compression (DXT1, DXT3, DXT5), and in later DirectX versions BC4 through BC7 — eliminating the CPU-side decompression step required by formats like PNG or JPEG. The file structure begins with a magic number and a 124-byte header specifying width, height, pixel format, mipmap count, and optional DX10 extended header for newer compression modes, followed by the raw surface data. DDS supports 2D textures, cube maps (six faces for environment mapping), volume/3D textures, and texture arrays, each with pre-computed mipmap chains that allow the GPU to sample appropriately sized versions at different distances. One advantage is rendering performance: because the GPU reads DDS data directly without decompression overhead, texture loading is dramatically faster than with traditional image formats, and the compressed data stays compressed in video memory, allowing more textures to fit in VRAM simultaneously. The format's dominance in game development is another key strength — DDS is the standard texture format for DirectX applications, supported natively by Unreal Engine, Unity, and virtually every PC game engine, as well as by image editors like GIMP (with plugin), Paint.NET, Photoshop (via NVIDIA plugin), and ImageMagick.
Developer: Microsoft
Initial release: September 22, 1999

Frequently Asked Questions

Why convert CDT to DDS?

CDT templates need CorelDRAW to open. Converting to DDS creates a standard image viewable on any device without special software.

How do I open a DDS file?

DDS files open in GIMP (with plugin), Photoshop (with plugin), IrfanView, and game engine texture tools.

How fast is CDT to DDS conversion?

Most files process in seconds. Cloud servers handle the work, so your local device speed is irrelevant.

Is the conversion process secure?

Your files stay private. CDT uploads are deleted after processing, and converted files are purged within 24 hours.

Can I use this converter on a phone?

Yes. Convertio runs in any mobile browser — upload your CDT file, convert, and download without installing an app.

Is quality preserved when converting CDT to DDS?

The converter maintains high fidelity. Output quality closely matches the source CDT template design.