Your Word document has a table of contents, cross-references to figures and sections, footnotes that link back and forth, and hyperlinks to external websites. You export it to PDF, open the result, and click a cross-reference that says "See Section 3.2 on page 14." Nothing happens. The reference is dead text. The clickable structure that made the Word document easy to navigate did not survive the conversion.
Cross-references, hyperlinks, and table of contents entries can all survive the Word-to-PDF conversion, but only when the right export settings are enabled and the document uses Word's built-in features rather than manual workarounds. The difference between a PDF where every reference is a working link and one where every reference is dead text comes down to a handful of settings that take seconds to check.
The Core Principle: Use Word's Built-In Features, Not Manual Formatting
Every feature in Word that creates a clickable link during the Word to PDF conversion depends on the document using Word's automated tools rather than manual text entry. A table of contents created with Insert, Table of Contents will export as clickable entries. A table of contents manually typed as plain text will export as dead text. Cross-references inserted via Insert, Cross-reference will export as clickable links. Text that you manually typed as "See page 14" will export as dead text because Word has no way to know it is supposed to be a reference.
This principle extends to every navigational element. Use Insert, Hyperlink for external URLs rather than typing "www.example.com" as plain text and relying on Word's auto-formatting to make it look like a link. Use Insert, Bookmark to create anchor points for internal navigation. Use Word's built-in heading styles, Heading 1, Heading 2, Heading 3, rather than manually formatting text to look like headings with bold and font size changes. Each built-in feature generates structured data in the document that the PDF export engine can convert into functioning PDF links, bookmarks, and cross-references.
Configuring the PDF Export Settings for Working Links
When you export from Word to PDF using File, Save As, PDF, or File, Export, Create PDF, the default settings do not always preserve interactive elements. Click the Options button in the Save As PDF dialog to open the export settings. Under Include non-printing information, verify that "Create bookmarks using Headings" is checked. This converts your heading styles into PDF bookmarks. Verify that "Document properties" is checked if you want the PDF metadata to include the Word document's title and author. Under the PDF options section, check "ISO 19005-1 compliant (PDF/A)" only if you need PDF/A archiving compliance and understand that this setting may disable some interactive features.
The most critical setting for cross-references is not in the Options dialog at all. It is in Word's main preferences. Go to File, Options, Advanced, and scroll to the Show document content section. Verify that "Show field codes instead of their values" is unchecked. If field codes are displayed, the PDF export will export the raw field code text, something like "{ REF _Ref12345 \h }" instead of the resolved reference text. The exported PDF will show field codes instead of page numbers and section titles, which is far worse than dead links.
How to Verify That Cross-References Survived the Conversion
After exporting the PDF, do not assume everything worked. Open the PDF and methodically test a few links. Click a table of contents entry. It should jump to the corresponding heading. Click a cross-reference like "See Figure 3 on page 7." It should jump to Figure 3. Click an external hyperlink. It should open the URL in your default browser. If any of these fail, the export settings need adjustment or the source document is using manual formatting instead of built-in features.
Footnotes and endnotes deserve special attention because they involve bidirectional links. Click a footnote reference number in the body text. It should jump to the footnote at the bottom of the page. Then look for a return link in the footnote itself that jumps back to the reference point in the body text. Word exports both the downward and upward links if the document uses Insert, Footnote rather than manually typed superscript numbers. Manual footnote numbers are dead at both ends.
What to Do When Cross-References Break During Export
If cross-references are broken in the exported PDF, the fix is in the source Word document, not in the PDF. Return to Word and check that each cross-reference was created with Insert, Cross-reference, not typed manually. Update all fields by pressing Ctrl+A to select everything, then F9 to update all fields. This forces Word to recalculate every cross-reference, table of contents entry, and field code. Outdated field caches can cause references to point to incorrect pages or display error text instead of the intended reference. After updating, re-export to PDF and verify the links again.
If updating fields does not fix the problem, the document may contain broken field codes. Press Alt+F9 to toggle field code display. Look for cross-reference fields that show error messages like "Error! Reference source not found." These broken references need to be recreated in Word before the document can produce a clean PDF Export. Delete the broken cross-reference, navigate to the target location, insert a bookmark, return to the reference location, and insert a new cross-reference pointing to that bookmark. This manual repair process is tedious, but it is the only reliable way to fix a broken cross-reference.
Converting With Google Docs and Other Word Processors
Google Docs handles PDF Links and cross-references differently from Word. When you download a Google Doc as a PDF, hyperlinks to external URLs are preserved and remain clickable. Headings formatted with Google Docs' built-in heading styles become PDF bookmarks automatically. However, Google Docs does not support cross-references to specific sections or page numbers in the way Word does. If your Google Doc contains internal navigation, use Insert, Bookmark to create anchors and Insert, Link to create links to those bookmarks. These bookmark links survive the PDF export and produce functional internal navigation in the resulting PDF.
Apple Pages handles PDF export similarly. External hyperlinks are preserved. A table of contents generated by Pages' Insert, Table of Contents feature exports as clickable entries. Cross-references between sections are not natively supported in Pages, so documents that require internal cross-referencing are better authored in Word, which has the most mature cross-reference system among mainstream word processors. WukongPDF's Word-to-PDF conversion tool processes documents with their cross-reference structure intact, and for documents where the export settings were missed at creation time, the PDF editing tools can add hyperlinks manually to replace broken references, though manual link addition is far slower than getting the export settings right the first time.