Export and Convert OneNote

OfficeIMO reads and writes desktop .one, FSSHTTP-encoded .one, .onetoc2 notebook tables of contents, .onepkg exports, and notebook directories without requiring Microsoft OneNote.

Export a page or notebook to images

using OfficeIMO.Drawing;
using OfficeIMO.OneNote;

OneNoteSection section = OneNoteSectionReader.Read("Planning.one");
OneNotePage page = section.Pages.Count > 0
    ? section.Pages[0]
    : throw new InvalidOperationException("Planning.one contains no pages.");

OfficeDrawing canvas = page.ToDrawing();

page.ToImage()
    .AtDpi(144)
    .AsPng()
    .Save("page.png");

OneNoteNotebook notebook =
    OneNoteNotebookReader.Read(Path.Combine("Notebook", "Open Notebook.onetoc2"));

notebook.ToImages()
    .AllPages()
    .AtDpi(144)
    .AsTiff()
    .Save("Notebook pages");

Load a .one section when you need one page, or its notebook's .onetoc2 table of contents when you need every page. The same Drawing canvas owns SVG and pixel output, so PNG, JPEG, TIFF, and lossless WebP do not rely on separate OneNote renderers. Rendering includes positioned outlines, styled text, lists and tags, tables, images, printouts, ink, and structured math.

Choose semantic or visual conversion

Current pages are the default conversion surface. Conflict copies and version-history snapshots are opt-in for direct conversions. Reader reports their counts in structured metadata.

Bound image work

OneNotePageRenderingOptions controls page sizing, fonts, included features, source payload limits, and maximum raster pixels. Oversized exports can reduce scale with a diagnostic or throw OfficeImageExportLimitException, according to the selected overflow behavior.

For batch jobs, keep page selection and filenames deterministic and retain conversion diagnostics beside the output artifacts.