You spend an hour getting a document just right in Microsoft Word — the headings line up, the table fits the page, the logo sits in the corner. Then you save it as a PDF and everything shifts. Fonts change, a table spills onto a second page, an image jumps. It's one of the most common and frustrating office problems. The good news: it's almost always preventable once you understand why it happens.
Why Word formatting breaks in PDF
A Word document isn't a fixed picture of a page — it's a set of instructions that your computer re-flows based on what's installed and how Word is configured. A PDF, by contrast, is fixed: it locks the layout exactly as it was at the moment of conversion. So the question isn't really "why does the PDF look wrong" — it's "why did Word render the page differently than you expected at conversion time." The usual culprits:
- Missing fonts. If your document uses a font that the converting machine doesn't have, it gets substituted for a lookalike — and the new font's slightly different width pushes everything around.
- Auto-fit tables. Tables set to resize to their content can render differently depending on margins and the rendering engine.
- Floating images. Images anchored "in front of" or "behind" text instead of inline with it are notorious for moving when the layout reflows.
- Manual spacing. Pages held together with rows of spaces, tabs, or blank lines (instead of proper styles) collapse or expand unpredictably.
The fixes, in order of impact
1. Embed your fonts
This single step solves most formatting drift. In Word, go to File → Options → Save and tick "Embed fonts in the file." This bakes the actual fonts into the document so any converter renders them correctly instead of substituting. If you're sharing the source file too, embedding guarantees the recipient sees your typography, not theirs.
2. Anchor your images inline
Click each image, open its layout options, and choose "In line with text" where possible. Inline images flow with the paragraph they belong to and are far less likely to jump. If you need an image to sit beside text, use a borderless table cell to hold it in place rather than free-floating positioning.
3. Use styles, not manual spacing
Replace stacks of blank lines with proper "Space before/after" paragraph settings, and use real page breaks (Ctrl+Enter) instead of pressing Enter until the cursor jumps to the next page. Structure built with styles survives conversion; structure faked with whitespace does not.
4. Check tables before exporting
Select your table, and under Table Properties turn off "Automatically resize to fit contents" if your columns are drifting. Setting fixed column widths makes the table render identically everywhere.
Use a converter that renders the document properly
Even a perfectly built document can come out wrong if the converter only extracts text and rebuilds an approximation. Some browser-only tools do exactly that — they pull the words out and re-lay them, dropping images and styling along the way.
PDFduck converts Word documents with LibreOffice, the same professional-grade engine used by major office suites. It reads your DOCX the way Word does — fonts, tables, images, headers, and layout intact — and produces a PDF that matches what you see on screen. Your file is converted on a secure server, then deleted immediately after your download.
Convert Word to PDF →A quick pre-flight checklist
- Embed fonts (File → Options → Save).
- Set images to "in line with text."
- Replace blank-line spacing with paragraph spacing and real page breaks.
- Fix table widths so they don't auto-resize.
- Proofread the last page — that's where overflow shows up first.
- Convert, then open the PDF and compare it side by side with the Word file.
Do those once and "my PDF looks different from my Word doc" stops being a problem. The layout you approve is the layout your reader gets — which, after all, is the entire point of using a PDF.