Learn about Note Taking File Formats and APIs that can open and create Notebook files

Note-taking program files contain sections and pages for storing notes. A note document can be as simple as a text document as well as more detailed consisting of digital images, audio/video clips, and hand sketch drawings.

Common OneNote file extensions and their associated file formats include .ONE and its table of contents file .ONETOC2.

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List of Note Taking File Extensions and Associated File Formats

Following is a list of common Note taking file formats along with their file extensions.