DOCX Split Tool
Break a long Word document into separate files. Split at every chapter heading, at every Heading 1 and Heading 2, at manual page breaks or at section breaks, and get one .docx per part, named after its first heading. Each file keeps the original formatting, page setup, headers and footers, and only the images, footnotes and comments that belong to it.
- Files stay on your device
- No sign-up
- Free to use
Each new document keeps the formatting, page setup, headers and footers of the original. Images, footnotes and comments that belong to other parts are removed from it.
How to use DOCX Split Tool
- Drop a .docx file onto the page.
- Choose where to split: headings, page breaks or section breaks.
- Click “Split document”.
- Download the parts one by one or as a ZIP.
DOCX Split Tool features
Four split modes
Heading 1, Heading 1–2, page breaks, sections.
Formatting kept
Styles, lists, tables and page setup.
Headers and footers
Kept in every part.
Clean parts
Images, notes and comments of other parts removed.
Named files
Number plus the first heading of each part.
Private
Split in your browser.
When to use DOCX Split Tool
- Sending chapters of a book or thesis to different reviewers.
- Splitting a mail-merge result into one letter per file.
- Dividing a manual into separate topics.
- Extracting appendices from a report.
DOCX Split Tool FAQ
How are headings recognised?
Paragraphs that use Word’s Heading 1 (or Heading 2) style, styles based on them, or paragraphs with an outline level. Text that only looks like a heading is not detected; apply the heading style in Word.
What does “page breaks” split at?
Manual page breaks (Ctrl+Enter), “page break before” paragraphs and section breaks that start a new page. Pages that Word creates automatically when text fills a page are not fixed in the file and cannot be split at.
Is a mail-merge document split per letter?
Yes: merged letters are separated by section breaks, so choose “Section breaks”.
Do the parts keep the page layout?
Yes. Each part ends with the section settings of its content: page size, orientation, margins, columns, headers and footers.
Is there a limit on parts?
200 files per split. For more, split at a higher heading level first.
Is my document uploaded?
No. It is split in your browser.
Splitting Word documents cleanly
Splitting a document by hand means copying each part into a new file and fixing styles, headers and page settings afterwards. Doing it at the level of the document package avoids that work: every part is a copy of the original package with only its own share of the text, so styles, list definitions, headers, footers and settings are identical to the original.
The tool reads the document body and decides where each part begins. For headings it uses the outline level from the paragraph or its style, the same information Word uses for the navigation pane. For page breaks it cuts paragraphs at the break character, so text before a break stays on one side and text after it on the other. For section breaks it follows the section structure exactly, which is how mail-merge documents and documents with mixed page orientations are organised.
Each part must end with the right section settings. In Word, the settings of a section are stored at its end; when a part ends in the middle of a section, the tool copies that section’s settings to the end of the part, so page size, orientation and headers stay correct.
Parts should not carry content that belongs to others. Images that are not shown in a part are removed from it unless a header or footer uses them, footnotes and endnotes not referenced in the part are deleted, and comments are kept only where their text is. This keeps the files small and avoids sharing more than intended.
To join documents, use the DOCX Merge Tool; to split PDFs, use Split PDF.