.IDML File Extension

InDesign Markup Language File

Files with the .IDML extension contain project data created by Adobe InDesign software. The InDesign Markup Language format was introduced with InDesign CS4. IDML format was designed to replace the mo...

General Information

Title IDML File Extension
Extension .idml
Full Form InDesign Markup Language File
File Type Markup Language File
Developer Adobe Systems
MIME Type application/vnd.adobe.indesign-idml-package

File Function

Primary Function Layout representation
Additional Functions Exchange format
Features XML-based, Interchangeable

File Characteristics

Quality High fidelity
Supports Layers Yes
Supports Transparency Yes
Editable Yes

Use Cases

Print Publishing Yes
Digital Publishing Yes
Document Exchange Yes

Security and Practices

Security Risks Low
Best Practices Version control, Backup

Historical/Version Information

Initial Release 2008
InDesign Version CS4 and later

Associated Types

Similar Extensions .indd, .inx, .indt

Software Compatibility

Software Usage Policy OS Compatibility
Adobe InDesign Subscription Windows, Mac