| Name | CDR | AI |
| Full name | CDR - CorelDraw File Format | AI - Adobe Illustrator Artwork |
| File extension | .cdr, .cdt | .ai |
| MIME type | application/x-cdr | application/post-script |
| Developed by | Corel Corporation | Adobe Systems |
| Type of format | Vector graphics | Vector image format |
| Description | CorelDraw is a vector graphics editor developed and marketed by Corel Corporation of Ottawa, Canada. CorelDraw file formats include CDR, CorelDraw Compressed (CDX), CorelDraw Template (CDT) and Corel Presentation Exchange (CMX). | Adobe Illustrator Artwork (AI) is a proprietary file format developed by Adobe Systems for representing single-page vector-based drawings in either the EPS or PDF formats. The .ai filename extension is used by Adobe Illustrator. The AI file format was originally a native format called PGF. PDF compatibility is achieved by embedding a complete copy of the PGF data within the saved PDF format file. |
| Technical details | The CDR file is a ZIP-compressed directory of several files, among them XML-files and the RIFF-structured riffdata.cdr with the familiar version signature in versions X4 (CDREvrsn) and X5 (CDRFvrsn), and a root.dat with Corel Draw X6, where the bytes 9 to 15 look slightly different. | The same 'dual path' approach as for PGF is used when saving EPS-compatible files in recent versions of Illustrator. Early versions of the AI file format are true EPS files with a restricted, compact syntax, with additional semantics represented by Illustrator-specific DSC comments that conform to DSC's Open Structuring Conventions. |
| File conversion | CDR conversion | AI conversion |
| Associated programs | Adobe Illustrator, Corel PaintShop Photo Pro, Corel WordPerfect Office, Inkscape, LibreOffice, Microsoft Visio. | Adobe After Effects, Cinema 4D, CorelDRAW, Corel Paint Shop Pro, Ghostscript, Inkscape. |
| Wiki | https://en.wikipedia.org/wiki/CorelDRAW | https://en.wikipedia.org/wiki/Adobe_Illustrator_Artwork |
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