Extract text from ONETOC2 files
To convert your ONETOC2 file to another format, you need Microsoft OneNote or other Data software.
To convert other file formats to the "OneNote Index File" file type, you need software like Microsoft OneNote or a similar tool.
The .ONETOC2 file is a proprietary Table of Contents index created by Microsoft OneNote. It serves as the organizational backbone for older local notebooks (typically from OneNote 2010 through 2016), storing metadata like the order of sections, tab colors, and open/closed states of groups. It does not contain your actual notes, text, or images; that content resides in accompanying ONE files located in the same folder.
Users typically encounter this file when recovering backups or syncing data via OneDrive. The primary challenge is that .ONETOC2 files are binary indexes, meaning they are unreadable in text editors and useless without the associated section files. You cannot simply drag this single file into a converter to get a document. To convert your data to a portable format like PDF or DOCX, you must open the parent folder in OneNote and use the built-in 'Export' function to save the entire notebook. For long-term archiving without proprietary software, converting the full notebook to PDF/A is the standard workflow.
Convert.Guru analyzes your ONETOC2 file, detects the exact format, and lets you read the text inside.
Users also converted ONE, ONETOC, ONEPKG, NOTEBOOK, URL, TXT, PDF, ZIP, INI, PPTX, RDS, CIA and RPMSG files.
If you want to convert ONETOC2 file to INI, CFG, CONF, CONFIG, JSON, XML, YAML, YML, TOML, ENV, PROPERTIES or RC, you can use Microsoft OneNote or similar software from the "Notebook Table of Contents" category. In the File menu, look for Save As… or Export….
To convert ZSHRC, CONF, RCFILE, GITCONFIG, RC, PLIST, BASHRC, CONFIG, PROFILE, INI, PREFS or CFG files to ONETOC2, try Microsoft OneNote or another comparable tool in the "Notebook Table of Contents" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our ONETOC2 converter.