CDT to PGM Converter

Free online CDT to PGM image conversion — instant

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Simple Process

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

Cloud Processing

Server-side conversion means no drain on your device. CDT files are processed quickly on Convertio infrastructure.

Quality Results

Your CDT template converts to PGM seamlessly — Convertio bridges CorelDRAW content to accessible Portable Graymap output.

How to convert CDT to PGM

1

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

2

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

3

Let the file convert and you can download your pgm 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
PGM (Portable Graymap) is the grayscale member of the Netpbm image format family, created by Jef Poskanzer in 1988 as part of the Pbmplus toolkit for Unix systems. PGM stores single-channel intensity images where each pixel holds a gray value from 0 (black) to a user-specified maximum (typically 255 for 8-bit or 65535 for 16-bit). The format exists in ASCII (magic number P2), where pixel values are written as decimal text numbers separated by whitespace, and binary (magic number P5), where values are stored as raw bytes. Both variants begin with a header specifying the magic number, width, height, and maximum gray value. PGM was designed as the grayscale intermediate in Netpbm's convert-process-convert pipeline philosophy: source images from any format are converted to PGM, processed using Netpbm's extensive command-line tool library, then converted to the target format. One advantage is format transparency — the ASCII variant makes image data directly readable by humans and trivially processable by text tools like awk and grep, invaluable for debugging and education. The scientific and computer vision community's adoption is another strength: PGM's straightforward single-channel representation makes it a natural format for image analysis algorithms, and many academic papers and course materials use PGM examples. The format is supported by ImageMagick, GIMP, and countless image processing libraries, and remains standard input for many research tools and benchmarks.
Developer: Jef Poskanzer
Initial release: 1988

Frequently Asked Questions

Why convert CDT to PGM?

CDT files are CorelDRAW-exclusive. Turning them into PGM images makes the content accessible across all platforms.

How do I open a PGM file?

PGM files are supported by GIMP, IrfanView, ImageMagick, and scientific imaging applications.

Can I convert CDT to PGM without paying?

Yes — the converter is free for standard use. Premium plans are available for professional or high-volume needs.

How fast is CDT to PGM 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.