Short answer: to convert a Word DOCX file to PDF, open the document in a word processor such as Word or LibreOffice and choose PDF as the format from the "Save As" or "Export" menu. This locks the page layout, means the recipient does not need Word installed, and generally preserves headings, tables, images and fonts.
What is the difference between DOCX and PDF?
DOCX is an editable document format, while PDF is a presentation format with a fixed page layout. A DOCX file is actually a compressed package that holds XML-based text and styles together; when the program, font set or version used to open it changes, the appearance can shift. PDF defines every page at a specific width and height, so the document looks the same on different devices.
This difference directly affects how you choose to share a file. If the other person is going to edit the document, sending DOCX is the right call; if the document will only be read, printed or archived, sending a PDF is safer.
| Feature | DOCX | |
|---|---|---|
| Editability | Easy to edit | Limited editing |
| Appearance | Can change depending on the program that opens it | Looks the same on every device |
| Fonts | Fallback font is used if not installed | Fonts can be embedded |
| Needed to open it | An editor such as Word or LibreOffice | Just a PDF viewer |
How do I save DOCX as PDF in Word?
The quickest way to convert DOCX to PDF in Word is to save the document in PDF format. In Microsoft Word, two different menus give the same result; LibreOffice has a similar export flow.
- Open the document in Word and finish your final checks such as spelling, page numbers and heading styles.
- Go to File > Save As and select PDF from the list of file types.
- Alternatively, use File > Export > Create PDF/XPS; this screen offers options that balance file size against print quality.
- Choose the file name and save folder, then confirm the save.
- Open the resulting PDF and visually check page breaks, table overflows and image positions.
- If you use LibreOffice, use File > Export as PDF; in the window that opens you can adjust image compression and bookmark options.
If your document started out as Markdown rather than Word, you first need to produce a formatted Word file; you can use the Markdown → Word tool for that step. If you are working with UDF files from UYAP, converting the file to DOCX first with the UDF → DOCX Converter makes the process easier before moving on to PDF.
Which formatting is preserved during conversion?
In DOCX to PDF conversion, the text hierarchy and page layout are generally preserved, but how much survives depends on the complexity of the document. Headings and subheadings, paragraph styles, tables and lists, embedded images, headers and footers, and page numbers stay as they are in most conversions. Tables of contents, hyperlinks and footnotes are also among the elements commonly preserved.
The risky points are mostly these:
- **Custom fonts:** If a font used in the document is not on the system, the converter may switch to a fallback font and line endings can shift. That is why it is safer to prefer common fonts or embed the font in the document.
- **Complex tables:** Tables with in-cell images, merged cells and rotated text can overflow at page boundaries.
- **Text boxes and shapes:** These elements have fixed positions and may sometimes not appear where you expect.
- **Page breaks:** Manual breaks are preserved, but automatic flow can shift because of changing line heights.
If the format of your images is causing problems, you can use the Image Converter tool to convert the image to a suitable format before adding it to the document.
Should I choose an online converter or desktop software?
Which method you choose depends on the confidentiality, size and frequency of the document. Desktop software is the safer option for confidential documents because the file never leaves your computer, and it gives you more control over conversion quality. Online converters are fast because they require no installation; in return, they require you to upload the file to a server.
You can use these criteria when choosing:
- **Confidentiality:** For documents containing contracts, identity information or customer data, local software should be preferred.
- **File size:** With large documents, the upload limits of online services can cause problems.
- **Frequency:** If you convert dozens of documents a day, a desktop solution that supports batch conversion saves time.
- **Quality control:** Always open the document after conversion and check it; no method guarantees a perfectly flawless result.
What are common mistakes in conversion?
The most common mistake is switching to PDF without saving the document first and skipping the final check. Unsaved changes are not reflected in the conversion; and not opening and reviewing the resulting PDF means table overflows or missing images go unnoticed.
Other common mistakes include:
- Producing a PDF without clearing the spelling check and hidden comments in the document.
- Saving the PDF as a scanned image, which makes the text unselectable.
- Not adding a date or version number to the file, so different versions get mixed up.
- Forgetting to carry password protection over to the PDF when the document requires it.
- Editing the DOCX and PDF copies of the same document separately and creating two different versions.
Frequently asked questions
Is converting DOCX to PDF free?
Yes, local conversion with programs such as Word and LibreOffice requires no extra fee; this function is included as standard in most word processors.
Does the font change when I convert to PDF?
If the font you used in the document is installed on the system or embedded in the document, it generally does not change. If the font cannot be found, the converter uses a fallback font and line endings can shift.
Can I convert the resulting PDF back to Word?
Yes, converting PDF to Word is possible; however, complex page layouts, multi-column text and tables may not come back in exactly the same structure.
Are tables and images preserved in the PDF?
Simple tables, lists and embedded images are preserved in most conversions. In complex layouts containing merged cells, text boxes and rotated objects, overflow can occur, so you need to check the output.
Can I convert DOCX to PDF from my phone?
Yes, mobile Word and LibreOffice apps and online converters also work on a phone. For confidential documents, it is safer to prefer local apps that do not upload the file to a server.