How to Open DOCX, ODT and RTF Without Word
Someone sent you a document, and Microsoft Office isn't installed — or it is, but you'd rather not pay for a subscription. Good news: to open, read and even edit a .docx, .odt or .rtf, you don't need Word at all. Here are the free ways — from offline apps to a couple of clicks in your browser — plus why these three formats are forever squabbling with each other.
DOCX, ODT and RTF: three different beasts
Before opening a file, it helps to know what you're actually holding. All three formats store "text with formatting," but they're built and behave differently.
DOCX is the Microsoft Word format, the de-facto standard of the document world. Under the hood it's Office Open XML (OOXML): a plain ZIP archive containing XML files with the text, styles and settings, plus folders of images. Rename .docx to .zip, unpack it, and you can see that structure with your own eyes.
ODT is OpenDocument Text, the open ODF standard (developed by the OASIS body). It's built on the same logic as DOCX — an archive of XML inside — but the markup is different. ODT is the "native" format of the free office suites LibreOffice and OpenOffice.
RTF is Rich Text Format, a veteran from the 1980s, also invented by Microsoft. It's a simple text format with styling commands written right into the text. It can't do fancy things like advanced styles and embedded objects, but it opens literally everywhere, including the built-in WordPad on Windows.
In short
DOCX and ODT are "archives of XML" on different standards (Microsoft vs. OASIS). RTF is old universal text that opens in anything but can't carry modern formatting. The key point: none of them is chained to Word — dozens of free programs read them.
LibreOffice and OnlyOffice: a free office
If you need a full editor rather than just a viewer, the best free choice is LibreOffice. It's a powerful open-source office suite for Windows, macOS and Linux. Its word processor, Writer, opens DOCX, ODT and RTF, lets you edit them and save them back. ODT is native to it, and its support for Microsoft formats has become very solid over the years.
A worthy alternative is OnlyOffice. It has an important technical edge: it does not convert DOCX into its own internal format but works with OOXML directly. In practice that means fewer layout surprises when opening files made in Word. OnlyOffice is also free and comes in desktop and online versions.
There's also good old OpenOffice, the "ancestor" of LibreOffice. It works, but it develops noticeably more slowly, so for a new user LibreOffice is usually the better pick.
Google Docs: open it in the browser
Don't want to install anything? Then your tool is Google Docs. All you need is a Google account and a browser.
Upload the file to Google Drive
Drag your .docx, .odt or .rtf into the Google Drive window — it uploads in seconds.
Open it in Google Docs
Double-click the file and choose "Open with Google Docs" — the content appears right in the browser.
Edit and download
Edit the text online, and if needed export the result back to DOCX, PDF or another format.
This is the ideal way for a quick look from any device — someone else's computer or your phone. The one downside: very complex layouts (tricky tables, non-standard fonts) can shift a little, since Google re-lays the document on its own engine.
WPS Office and mobile apps
Worth a special mention is WPS Office — a free office suite whose interface deliberately mirrors the familiar Microsoft Office. It opens DOCX beautifully and is popular on Windows and Android with people who want that familiar "ribbon" of tools.
On a phone the choice is even wider. To open a text document, use:
- Google Docs — an app for Android and iOS, synced with Drive.
- Microsoft Word mobile — free for viewing and basic editing.
- WPS Office and OnlyOffice Documents — full mobile editors.
For ODT on Android there are even dedicated free viewers like OpenDocument Reader — perfect if you just need to open and read a file in that format.
If you only need to read it
Often the task boils down to something simple: open it, read it, maybe print it — no editing required. In that case installing an office suite is overkill. The cleanest route is to convert the document to PDF.
PDF opens everywhere: in any browser, on any phone, in the built-in viewers on Windows and macOS — without any office software. Plus it locks the layout: the document will look exactly as intended and won't shift on someone else's device. That's also handy when you need to send the file to someone and guarantee they'll see it correctly.
Turn a document into a PDF in seconds
The FormatZ converter opens and turns DOCX into PDF right in your browser — no Word install, no sign-up. Any device can read and print the result.
Convert DOCX to PDFNeed other directions? We have converters for ODT to DOCX, RTF to DOCX and DOCX to TXT — handy when a file arrives in an "awkward" format and you want to standardize everything.
Why layout breaks and how to fix it
A familiar scene: you open a document in a different program and suddenly the margins slid, the fonts changed, a table "fell apart." That's not a bug in a particular editor — it's a fundamental trait of formatted document formats.
There are usually two causes. The first: different engines interpret the markup differently — what Word draws one way, LibreOffice or Google may draw slightly differently. The second, most common one: missing fonts. If the document specifies a font your system doesn't have, the app substitutes a similar one, the text takes up different space, and the lines and breaks shift.
How to insure against surprises? If the exact look matters — save or convert the document to PDF. PDF stores a finished, "baked" layout along with the fonts, so it looks the same for everyone. And if you specifically need to edit — just keep DOCX and ODT in the editor they were made in and don't bounce them between formats. For the differences between the document formats themselves, see our PDF vs DOCX breakdown.
