Free online DOCX to PDF converter

Source format: DOCX

DOCX is the default document format used by Microsoft Word and many other word processors. It stores formatted text, images, tables, headers, footers, styles, and other document elements in an XML-based package. DOCX is widely used for business documents, reports, letters, resumes, manuals, and collaborative editing because it is editable and supports rich formatting.

Target format: PDF

PDF (Portable Document Format) is a fixed-layout format designed to preserve the appearance of a document across devices and operating systems. It is ideal for sharing, printing, archiving, and publishing because fonts, spacing, and page layout remain consistent. PDF files are commonly used for final versions of documents, forms, invoices, and official records.

How to convert DOCX to PDF

The most reliable way to convert DOCX to PDF is with a word processor that can export to PDF, especially Microsoft Word or LibreOffice Writer. If you want a quick browser-based option, you can convert the file on 101convert.com for free without installing any software.

1. Open the .docx file in Microsoft Word or LibreOffice Writer.
2. Check the document layout, fonts, images, page size, and margins before exporting.
3. In Microsoft Word, choose File → Save As or File → Export → Create PDF/XPS, then select PDF as the output format.
4. In LibreOffice Writer, choose File → Export As → Export as PDF or File → Export As PDF.
5. Choose any PDF options you need, such as image quality, page range, or whether to embed fonts.
6. Save the file and open the resulting .pdf to verify that the formatting looks correct.

If you prefer command-line conversion, LibreOffice can also export DOCX files to PDF in headless mode. For example, you can run soffice --headless --convert-to pdf input.docx to create a PDF in the current folder.

Quality and compatibility notes

DOCX to PDF conversion is usually very accurate, but the result depends on font availability, page setup, and document complexity. If the DOCX uses fonts that are not installed on the conversion system, text may reflow or substitute fonts, which can change line breaks and page count. Complex elements such as text boxes, SmartArt, macros, embedded objects, or advanced Word features may not render exactly the same in every converter.

For best results, use the same application that created the document, or at least a converter that supports Word layout well. Before sharing the PDF, review the output carefully, especially if the document contains tables, headers and footers, tracked changes, or images positioned with wrapping. PDF is excellent for preserving the final appearance, but it is not meant for further editing like DOCX.