What opens as is
Word documents (.docx) open so that you can edit the text. PDFs open so that you can add marks on the pages and delete, rotate or reorder pages. These two are handled only inside the browser — the file does not go to a server.
What opens after conversion to PDF
E-books (.epub), PowerPoint (.pptx, .ppt, .pps), Excel (.xlsx, .xls), old Word (.doc), OpenDocument text (.odt, .ott), spreadsheets (.ods), presentations (.odp) and drawings (.odg), web pages (.html) and Markdown (.md) are opened by converting them to PDF, because this app has no editor for those formats. After conversion you can add marks and rework the pages. Hangul (.hwp, .hwpx) is converted to a Word document (.docx) and opened in the editor — text, tables and images carry over and can be edited, but some layout and fonts may differ from the original. FictionBook e-books (.fb2) are converted to Word and opened for editing in the same way. Apple Pages documents (.pages) are opened the same way, but documents made in page-layout mode (text boxes and shapes placed freely) cannot be opened. Apple Keynote presentations (.key) are converted to PDF like PowerPoint. Apple Numbers spreadsheets (.numbers) are not supported yet.
Only e-books are converted in the browser; the rest are converted on our server. When a file is uploaded to the server, the screen tells you before you press the button.
What does not open yet
- Rich text (.rtf) — when we tried converting it, large parts of the text went missing, so we blocked it.
- Spreadsheet files (.csv) and plain text (.txt) — the conversion itself did not work.
Changing the extension does not help
Renaming a file to end in .docx will not make it open, because this site looks inside the file to check what it is. Conversely, if the extension looks wrong but the content is .docx, it opens normally.
Web pages (.html) and Markdown (.md) are the exception. Both are just text files, so looking inside cannot tell them apart; only in this case is the extension used. Apple Pages and Keynote documents saved by newer versions are also recognised by their extension (.pages, .key), because inside they look the same as each other.
When a file does not open, the screen says what it is and why it cannot be opened. Use that message to decide which format to convert it to.
