Free Online Document Converter

ChangeThisFile supports PDF, DOCX, DOC, ODT, RTF, PPTX, PPT, ODP, HTML, TXT, and Markdown. You can convert between most combinations of these formats, including complex conversions like DOCX to PDF and PDF to DOCX.

Some document conversions (like DOCX to HTML and Markdown to HTML) run entirely in your browser using JavaScript libraries — your files never leave your device. Most document conversions (like DOCX to PDF) upload to the server for processing with LibreOffice headless, then auto-delete immediately.

Yes. Go to the PDF to DOCX converter page and upload your PDF. The conversion uses LibreOffice on the server to extract text and formatting. Note that complex PDFs with heavy graphics or unusual layouts may not convert perfectly — no PDF-to-Word converter can guarantee 100% fidelity.

Yes, in most cases. The conversion uses LibreOffice headless, which handles standard Word formatting well — fonts, tables, headers, footers, images, and page layouts are preserved. Complex features like macros, embedded objects, or advanced typography may render slightly differently.

Yes. ChangeThisFile supports PPTX to PDF, PPT to PDF, PPT to PPTX, and PPTX to ODP conversions. The conversion preserves slide layouts, text, images, and basic animations.

There is no page limit. The only constraint is the 25MB file size limit (free tier; 500MB on Pro) for server-side conversions. Most Word documents and PDFs are well under this limit, even with hundreds of pages.

Yes. Markdown to HTML conversion runs entirely in your browser using the marked library. Your Markdown file never leaves your device. The converter supports standard Markdown syntax including headers, lists, code blocks, links, and images.

ODT (Open Document Text) is an open standard document format used by LibreOffice, OpenOffice, and Google Docs. It is an alternative to DOCX that is not tied to Microsoft. ChangeThisFile can convert between ODT and DOCX, PDF, RTF, DOC, HTML, and TXT.

No. ChangeThisFile uses LibreOffice on the server to handle Office document conversions. You do not need Microsoft Office, Word, PowerPoint, or Excel installed on your computer.

ChangeThisFile converts PDF structure and text. If your PDF is a scanned image (no selectable text), the conversion to DOCX will produce an image-based document, not editable text. For OCR (optical character recognition), you would need a dedicated OCR tool.