Reference Formats
CDR
CDR is CorelDRAW's native, proprietary vector format, first released in January 1989 and later restructured around a RIFF container with version-specific type identifiers.
Extension
.cdr
Full name
CorelDRAW Document
Introduced
January 1989, with the first release of CorelDRAW
Vendor
Corel Corporation
What is inside the container
Early CDR versions used a fully proprietary structure; from CorelDRAW 3 onward, files are wrapped in a RIFF envelope, identifiable by the leading "RIFF" bytes, with each major version defining its own type identifier (CDR5, CDR7, CDRG for X6, and so on). There is no publicly published specification, and the underlying vector, bitmap, and text data remains proprietary to Corel, which is the core reason CDR interoperability is inconsistent across other software and even across CorelDRAW's own version history.
How to open it
For archives
CDR is a strong conversion candidate for DAM archival: it is proprietary and undocumented, no third-party tool reliably opens the newest CorelDRAW releases, and even open-source import support (Inkscape, LibreOffice) caps out at older CDR versions. Export to SVG or PDF for a durable, broadly readable archival copy, and keep the native CDR only where continued editing inside CorelDRAW itself is a real requirement.
Corel released the first version of CorelDRAW in January 1989, developed by software engineers Michel Bouillon and Pat Beirne after work that began in 1987, and it became one of the first serious vector illustration programs for Microsoft Windows. The CDR format has carried the application’s native document data since that first release, and the “WL” byte signature marked early versions of the file before the structure changed.
CorelDRAW 3, released in 1992, moved CDR onto a RIFF (Resource Interchange File Format) container — the same general envelope structure used by formats like WAV and AVI — with each subsequent major CorelDRAW release defining its own RIFF type identifier inside the file. The vector and bitmap data itself, however, has always remained Corel’s own proprietary encoding, with no specification ever published.
That combination — proprietary internals plus a RIFF structure that keeps changing its type tag release over release — is why CDR interoperability is genuinely inconsistent in practice. Inkscape tops out at CorelDRAW X4, LibreOffice Draw’s libcdr-based import goes only to X3, and Adobe Illustrator’s own CDR import support covers versions 5 through 10 — none of them handle Corel’s newest releases. For a DAM holding a mix of CDR files from different CorelDRAW eras, converting to SVG or PDF on ingestion is the practical way to guarantee the asset stays viewable outside CorelDRAW itself.
Frequently asked
Why is CDR interoperability inconsistent even across CorelDRAW's own version history?
There is no publicly published specification, and the underlying vector, bitmap, and text data remains proprietary to Corel, with each major version defining its own type identifier, such as CDR5, CDR7, or CDRG for X6, inside a RIFF envelope.
Can Inkscape or LibreOffice open the newest CorelDRAW files?
No. Inkscape imports only CorelDRAW versions 7 through X4, and LibreOffice Draw's libcdr support caps out at versions 7 through X3; neither covers the newest CorelDRAW releases.
What should a DAM export from CDR for a durable archival copy?
SVG or PDF, keeping the native CDR only where continued editing inside CorelDRAW itself is a real requirement.
How can a DAM identify a CDR file's structural era?
Files from CorelDRAW 3 onward are wrapped in a RIFF envelope, identifiable by the leading RIFF bytes; earlier versions used a fully proprietary structure without that marker.
Can Adobe Illustrator open CDR files?
With limitations. Illustrator's import support is limited to CorelDraw versions 5 through 10, so newer CDR files won't open correctly in Illustrator.
When was CDR introduced?
January 1989, with the first release of CorelDRAW.
Which software reliably opens CDR across all its format versions?
CorelDRAW itself is the only reliably complete option across all format versions, since third-party tools each cap out at a limited version range.
Why is CDR flagged as a strong conversion candidate for DAM archival?
It is proprietary and undocumented, no third-party tool reliably opens the newest CorelDRAW releases, and even open-source import support caps out at older versions, all reasons to export a durable SVG or PDF copy.
Sources
- CorelDRAW was initially released in 1989; the CDR format moved to a RIFF envelope starting with CorelDraw 3, and there is no publicly available CDR file format specification checked 2026-08-07 — Wikipedia, CorelDRAW
- Inkscape supports importing CorelDRAW versions 7 through X4; LibreOffice uses the libcdr library to support CDR files from version 7 to X3; Adobe Illustrator handles CorelDraw 5, 6, 7, 8, 9, and 10 checked 2026-08-07 — Wikipedia, CorelDRAW (compatibility section)
- CorelDRAW made its debut in 1989, developed by Michel Bouillon and Pat Beirne who began work on it in September 1987 checked 2026-08-07 — First Versions, CorelDRAW