// mime type · application type
application/vnd.openxmlformats-officedocument.wordprocessingml.document
Word document · .docx
What application/vnd.openxmlformats-officedocument.wordprocessingml.document is
This is a modern Word document (.docx), part of the Office Open XML family. Serving a .docx with this exact type ensures the browser hands it to Word rather than trying to display it.
How it's used
You'll see this as a Content-Type value on requests and responses — for example Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document. It's the type associated with the .docx file extension. Application types cover structured data and binary formats — from JSON and XML to PDFs, archives, and Office documents.
Other application types
application/json application/ld+json application/xml application/javascript application/pdf application/zip application/gzip application/octet-stream application/x-www-form-urlencoded application/wasm application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/vnd.openxmlformats-officedocument.wordprocessingml.document