File extension | .cdr |
File category | images |
Description | Corel Corporation developed the CDR file format and its main use is the creation of vector graphic images and drawings. Most of the editing programs support CDR file formats. It is the go to for CorelDRAW applications. Michel Bouillon and Pat Beirne were hired to work on developing a vector based illustration program that could be bundled with their publishing systems existing on desktops. |
Technical details | Information is lacking on technical specifications of CDR file format. After being launched in 1989 Corel corporation invested resources in further development. The most recent version of CorelDRAW application also provides basic support for text and it also supports color management and spot colors. |
Programs | Corel PaintShop Photo Pro LibreOffice |
Main program | Adobe Illustrator |
Developer | Corel Corporation |
MIME type | application/x-cdr image/x-cdr |
File extension | .ai |
File category | images |
Description | Images stored in this format lack gridded pixels and are a creation of the Adobe Illustrator program. It is made up of lines connecting points. The format is used in SMI and logo images creating. In the event that the image size is increased, it does not lose its quality due to a lack of raster image data. AI is made up of a header, strings for identification, and graphic elements. Graphical images are presented in the EPS format. |
Technical details | AI files were previously referred to as PGF and closely resembled PDF file format. PGF files became compatible with PDF. The copy was embedded into a saved PDF file. Similarly, this dual path system applies to Adobe Illustrator's current versions when files compatible with EPS are created and saved. The files are saved in the form of images without gridded pixels. Enlargement of the image cannot lead to a loss of image quality. |
Programs | Adobe Photoshop CorelDRAW Ghostscript sK1 |
Main program | Adobe Illustrator CS |
Developer | Adobe Systems |
MIME type | application/postscript |