Why people turn Word files into PDF
A Word document can look different on every computer: a missing font, another Word version or a phone app can move lines, break tables or push a picture onto the next page. A PDF fixes the look of each page, so the person who opens it sees exactly what you saw. That is why job portals, colleges, offices and printers so often ask for PDF instead of .docx.
What happens when you convert
Your .docx file is read in your browser: paragraphs, headings, lists, tables and pictures are laid out on A4 pages, and each finished page is saved into the PDF as a high-quality picture. Because every page is a picture, the PDF looks the same in every viewer — but the words inside it cannot be selected, searched or copied, and clickable links stop working. Up to 300 pages are converted at a time.
Which documents convert best
Letters, resumes, assignments, notices and reports with normal fonts such as Arial, Calibri or Times New Roman give the closest match. Documents built with text boxes, many columns, special fonts, comments or tracked changes may look slightly different from Word. Old .doc files from Word 97–2003 cannot be read — open them in Word and choose Save As → .docx first.
Common problems and how to fix them
A font looks different: your browser did not have that font, so a similar one was used; switch to a common font in Word and convert again. You need to select text in the PDF: run the result through OCR PDF, or use Word's own Save as PDF. The PDF is too large for an upload form: use Compress PDF or one of the Compress PDF to 100KB, 200KB, 500KB or 1MB tools.
Good habits
Keep the Word file as your editable master copy, open the PDF once before sending it, and check page breaks, tables and signatures on the last page.