The PDF format is now a standard open format that isn’t just available under Adobe Acrobat. The format has evolved to allow for editing and interactive elements like electronic signatures or buttons. It was developed by Adobe so people could share documents regardless of which device, operating system, or software they were using, while preserving the content and formatting. PDF stands for ‘Portable Document Format’ file. The CDR format is also compatible with other Corel products. However, uncompressed CDR files created in later versions of CorelDRAW can sometimes be opened by Inkscape, Adobe Illustrator or Adobe FreeHand, as well as by OpenOffice and LibreOffice. CDR files therefore won’t open in all drawing or photo programs. CorelDRAW is particularly used by digital artists and graphic designers, and is available as either a one-time software purchase or a monthly/annual subscription.ĬorelDRAW is a premium graphic design program, and some other image viewers and simple editors are not designed for vector graphics. Unlike raster images which are based on pixels, you can zoom in on vector images without affecting the image quality. CDR is a vector image format, which means the images are made up of points and connecting lines, rather than pixels. CDR is a file format developed in the 1980s for the CorelDRAW graphic design program.