CDT to ICO Converter

Online CDT to ICO — free template-to-image conversion

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Cloud-Based Speed

Your CDT template converts to ICO seamlessly — Convertio bridges CorelDRAW content to accessible icon output.

Straightforward Tool

Completely browser-based — no app downloads, no plugins. Just open the page and convert your CDT file.

Format Bridge

CDT to ICO conversion is handled in the cloud — your CorelDRAW template becomes a ready-to-use icon without local processing.

How to convert CDT to ICO

1

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

2

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

3

Let the file convert and you can download your ico 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
ICO is the icon file format for Microsoft Windows, introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.
Developer: Microsoft
Initial release: 1985

Frequently Asked Questions

Why convert CDT to ICO?

Converting CDT to ICO turns a proprietary CorelDRAW template into a portable image anyone can view and use instantly.

What software reads ICO files?

ICO files are used by Windows for icons. Open them with IrfanView, GIMP, Greenfish Icon Editor, or IconWorkshop.

Is there a charge for CDT to ICO?

No charge for basic use. Premium tiers add batch conversion and higher file size allowances for power users.

Does CDT to ICO take long?

Not at all — server-side processing delivers your converted file in seconds regardless of device performance.

Are my files safe during conversion?

Absolutely. Source CDT files are erased after conversion, and results are automatically removed within 24 hours.

Does this converter work on Mac?

It works on any platform — macOS, Windows, Linux, iOS, Android. Just open a browser and start converting.