Working with office documents It's no longer just a matter of writing and saving: nowadays we live with a jumble of formats like DOCX, PDF, and ODT, each with its advantages, limitations, and, above all, its own compatibility problems when opened in different programs. If you've ever received a file that "gets messed up" when you open it, or that your office suite simply doesn't recognize, you know exactly what I'm talking about.
Understanding how these formats interact with each other (Microsoft's DOCX, OpenDocument's ODT standard, and PDF as a Portable Document Format) is key to avoiding problems when sharing contracts, reports, or business proposals. In the following lines, you'll see in detail what each format offers, what's lost when converting from one to another, when it's best to use PDF, what limitations ODT has in professional environments, and what real options you have for converting your files without going crazy.
What is DOCX and how does it actually work?
Since 2007 Microsoft Word has used DOCX as the default file format. This format is based on Office Open XML: in practice, it's a compressed file (a ZIP) —which can be opened with tools like 7-Zip— which contains several XML files with the text, formatting, styles, as well as folders for images, graphic elements, and other resources. All of this is then translated into a bit sequence compatible with Office programs.
DOCX was created to replace the old DOC format.which was purely binary. However, the classic .doc format still exists and is still used, mainly for compatibility with older versions of Word or legacy systems. Today, both coexist: DOCX for modern environments and DOC when information needs to be exchanged with very old software or certain specific tools.
The great advantage of DOCX It supports almost all of Word's advanced features: complex styles, tables, charts, equations, content controls, forms, macros (when using .docm), templates, and more. Furthermore, Word can save in many other formats, such as RTF, HTML, PDF, XPS, XML (WordML), or even its own ODT format, although with compatibility nuances that we'll discuss later.
What is ODT (OpenDocument Text) and how is it used?
The ODT (OpenDocument Text) format It is the text document standard of the OpenDocument ecosystem, used primarily by OpenOffice, LibreOffice, and other open-source office suites. Like DOCX, ODT is a ZIP container that bundles various XML files and resources (text, styles, images, tables, and other objects).
The ODT documents were created with the idea of being an open standard and independent of any specific vendor. OpenOffice, LibreOffice, and derivatives like NeoOffice for macOS allow you to create text documents with custom styles, complex tables, images, and graphic elements, saving them in this format.
Over time, other services have been added to ODT's support.In 2014, Google Docs, along with Sheets and Slides, added support for the OpenDocument standard. Since then, it has been possible to save documents in ODT format directly from Google Docs, making this extension increasingly common in environments where proprietary formats are avoided.
ODT files, in essence, offer functions very similar to a DOCX file.Text, images, styles, tables, and various types of objects are all included. The key difference lies not so much in what they can contain, but in how different programs interpret that content when we open or save the document as an ODT file from Word or other applications.
What is PDF and why has it become the standard?
PDF (Portable Document Format) It was created to solve a very specific problem: ensuring that a document maintains the exact same appearance regardless of the device, operating system, or program used to open it. In other words, PDF is primarily designed for presenting information, not so much for editing it.
A PDF can contain text, images, links, form fields, and even digital signatures.But its purpose is to prevent the design from breaking down. That's why it's used extensively for contracts, final reports, invoices, official documents, print presentations, and, in general, any document that will be distributed and shouldn't be altered.
Compared to ODT or DOCXThe key point is that PDF is used more as an output and distribution format than as an internal working format. While ODT and DOCX are ideal for drafting, editing, and formatting, PDF is the format to which the document is typically converted once it's finished and you want to preserve its exact appearance.
ODT limitations and compatibility issues
When working with ODT in a mixed environment (For example, some people use LibreOffice and others use Microsoft Word or Google Docs), it's common to see formatting differences when opening the file in different applications. This can affect paragraph alignment, fonts, page breaks, margins, headers, footers, etc.
One of the big problems is that not all Word functions translate well to ODTWhen you save a Word document in .odt format, certain features are converted, simplified, lost, or converted to plain text. This particularly affects advanced collaboration features, structured content, references, and automation tools.
In professional settings (sales, HR, marketing, administration) This results in documents that change their appearance, lose automatic numbering, display altered styles, or no longer adhere to certain layout schemes. From the client's or management's perspective, the result can appear unprofessional and generate distrust.
Collaboration and change control in ODT versus DOCX
Word's collaboration features do not behave the same when saving to ODT.For example, comments are only partially supported: tables within comments are not supported. While the table content is preserved, the row and column structure is lost. Additionally, in Microsoft 365 and Office 2021, the user's initials are stored with the comment, but this information may be lost in other ODF editors.
The review panel itself is compatibleThat is, you can still see the basic change history. However, change tracking itself presents a serious problem: when you save the Word document in .odt format, All pending changes are automatically accepted.This means you lose the ability to review or reject changes after the conversion.
The functions of document protection and Information Rights Management (IRM) They are not compatible with ODT. If you try to save a protected or IRM-restricted file as an .odt file, those features will be removed, and that type of protected file will not open correctly in ODT format.
Mail merge is considered compatibleHowever, there are some nuances: special fields like ADDRESSBLOCK or RECIPIENT are converted to plain text, ceasing to be dynamic fields. Furthermore, if the document is opened in another ODF application, the connection to the data source will need to be manually re-established for the merge to work.
Contents: tables, indexes, equations, and other elements
Regarding structured content, there are multiple nuances of compatibility. When saving from Word to ODT, for example, the bibliography section is converted to plain text, thus ceasing to be a dynamic block that updates automatically. The same happens with some titles that depend on the SEQ field, which are also converted to text.
SEQ fields are not compatible with ODT This directly affects elements such as automatically numbered headings and tables of contents (TOCs) that rely on those fields. The TOC loses entries associated with SEQ, and when new headings are added, the numbering may stop incrementing automatically.
Word content controls They are only partially preserved. In Microsoft 365 and Office 2021, drop-down list controls are saved, but other control types (rich text boxes, checkboxes, etc.) are not preserved and may be converted to plain text when converted to ODT.
The equations and the equation editor are considered compatible.as well as footnotes and endnotes, with the exception that custom separators are not supported in ODT. That is, the content of the note is preserved, but some design details may vary.
The frames have only partial compatibility.If the frame's content includes unsupported objects (tables, AutoShapes, text boxes, nested frames, or SmartArt graphics), the frame itself may be lost even if the text content is preserved. Frame sets, on the other hand, are not supported at all.
The tables work, but with restrictions.Those with more than 64 columns are not supported; and Word theme formats are converted into cell-specific formats, losing the link to the document's overall theme.
Indexes and tables of contents are largely usableHowever, multi-column indexes are not properly supported. The Table of Authorities (TDA) and Table of Illustrations (TDI) are marked as unsupported, so their specialized capabilities are lost when exporting to ODT.
Regarding text boxesThere are also limitations: text boxes cannot be nested within each other. Some of these elements may change position or behavior when the ODT file is opened in another program.
Format and design: styles, bullets, orientations, and watermarks
The level of compatibility in terms of format is high, but not perfect.Borders and shading are retained, although advanced shading patterns are not supported. Image border styles are simplified to solid lines. Page backgrounds are not supported.
Numbering and bullet points They are saved correctly, but the spacing between the bullet or number and the text may vary slightly, as may the spacing between list items, which adjusts to the document's line spacing. Drop caps work, although some margin delimiters are lost.
The styles are preserved And, in fact, saving a document in ODT format usually increases the number of internal styles, because in OpenDocument virtually all formatting is defined by styles. Tools like "Format Copy," "Show Formatting," and the consistency checker function in a globally compatible way.
Tabs and text columns They are maintained, but specific position tabs are not fully supported and some properties associated with the section (top and bottom margins, headers, footers, borders or line numbering) may change, especially with continuous section breaks.
The text orientation has partial compatibilityOrientations such as right-to-left top-to-bottom (rltb), left-to-right top-to-bottom (lrtb), and top-to-bottom right-to-left (tbrl) are supported, especially in tables. However, other orientation modes are not fully supported.
Themes, watermarks, and certain preview features They don't transfer well to ODT. For example, the watermark is considered incompatible, so it disappears upon conversion. The live preview behaves compatiblely, but the zoom function in some views is marked as unsupported when working with ODT files.
File operations and supported formats in Word
Microsoft Word is very flexible when it comes to saving and opening formatsIn addition to DOCX and DOC, it allows working with binary Word files (.doc, .dot), with the RTF format (.rtf), with WordML (XML), with fixed formats such as PDF and XPS, with HTML (.htm, .html), with Open XML itself (.docx, .dotm), with WordMail files, and even with the plain text format (.txt).
Basic file protection is supported When saving in different formats, advanced encryption is not supported in ODT. If the document was encrypted in Word, that layer of security is lost when exporting it as ODT. The same applies to master documents, which are considered incompatible.
Word also has a “Trust Center” Text converter tools, template organizers, and other management mechanisms all work well within the native ecosystem, but lose some of their purpose when the file is transformed into foreign formats such as ODT.
Regarding printingThe page setup, print preview, and printing options are fully supported. It's also possible to export to a fixed file format (PDF, XPS) directly from Word, making it easy to standardize the presentation before sending the document to third parties.
Infrastructure, fields, OLE, macros, and XML
At the level of internal infrastructure of the documentThere are also important differences. Bookmarks, hyperlinks, and the help system itself are preserved when converting to ODT, although in documents originally created in OpenOffice, hyperlinks may not have the typical Word visual style (color and underlining), even though they will still function.
The fields are considered only partially compatibleThose that don't understand the ODT format are converted to plain text, while compatible fields are retained. However, as already mentioned, SEQ fields are not compatible, and this affects automatic numbering and advanced tables of contents.
OLE objects and some embedded elements They can present serious problems: objects originating from documents created in OpenOffice often do not display in Word because the image or object type is incompatible and the links may be relative. Other elements such as ActiveX controls, advanced forms, OCX files, or handwritten comments are considered incompatible altogether.
In the field of programming and automationVBA macros are not supported in ODT files. COM add-ins, C-API, events, and other extension mechanisms are considered only partially compatible or completely non-functional outside the native environment. Features such as smart documents, smart tags, and certain WordMail options also do not translate correctly.
Regarding XMLWord's advanced capabilities (attaching outlines, attributes, external sources, including and combining XML, tree views, validation, XSLT, etc.) are marked as incompatible when working with ODT. This type of structured document relies heavily on Word's own features, and the OpenDocument model does not replicate all of them.
Review, language, and navigation in ODT documents
Spelling and grammar checking tools They are largely preserved. Custom dictionaries, spelling, grammar, thesaurus, hyphens, and translation all function correctly. However, text marked as "Do not check spelling or grammar" may lose this property when saving to ODT, meaning all content will be checked without exception.
The document's language properties These settings are also preserved, as is automatic language detection in most cases. For those working with multiple languages in the same file, this is essential to avoid having to reconfigure each block of text after conversion.
Internal navigation through the document (Document Map, Search and Replace, and Go To and Back functions) are supported. These tools rely more on Word's interpretation of the content than on the formatting itself, so they can still be used with ODT files opened in Word.
Draft, outline, print layout, reading, web layout views and window management These are also considered compatible. The ruler, scrolling, status bar, and page thumbnails function normally, although, as mentioned, certain very specific zoom options in some views are marked as not compatible with ODT.
DOCX, ODT and PDF: differences in use and approach
When choosing a format, it's important to be clear about the function of each one.DOCX is Word's native format and the most comprehensive in terms of compatibility with all its features. ODT is the open standard from OpenDocument, ideal if you want to avoid proprietary formats or if you primarily work with LibreOffice or OpenOffice. PDF is the final publication format, designed for reading, printing, and distribution.
The main difference between ODT and PDF It's in the purpose: ODT is primarily used as a working container and for storing editable data, while PDF is used as a stable presentation format. Although both can contain text and images and have similar uses in text documents, PDF is far more popular and universal for sharing files with third parties.
When an ODT document is opened in Word or Google DocsThere may be differences in formatting, changes in styles, substituted fonts, and design discrepancies. However, when that same content is converted to PDF, the result remains visually identical on any operating system (Windows, macOS, Linux, mobile devices, etc.).
That's why, in professional contexts where presentation matters (proposals, contracts, public documentation, formal reports), it is usual to work in ODT, DOCX or other editable format, but convert to PDF before sending the file by email or publishing it.
Why is ODT to PDF conversion so important?
ODT documents are very practical in free software environmentsHowever, its "real" compatibility when moving between different suites isn't always perfect. To avoid design problems, page breaks that shift, or tables that become misaligned when sharing, the safest solution is to convert to PDF before distributing the document.
When converting from ODT to PDF, the format is frozen.The text, images, tables, and styles are rendered exactly as they were in the original. It doesn't matter if the recipient opens the file with Adobe Acrobat Reader, the browser's built-in viewer, or any other tool: the document will look the same.
This is especially critical when we talk about contracts, legal documents, budgets, or official reports.A simple page break or misaligned page numbers can lead to confusion or, worse, misinterpretation. PDFs eliminate these surprises, as they don't depend on the installed font or the layout engine of each editor.
In addition, the PDF offers an extra layer of security.It can be password-protected, printing or copying of content can be restricted, and even digital signatures and confidentiality labels can be added (when working within the ecosystem that supports them). Although some confidentiality labels may not be preserved when converting between certain formats, PDF remains much more robust for controlling how information is distributed and modified.
How to open ODT files on different systems
ODT files are not restricted to a single programOn Windows, macOS, and Linux, these files can be opened with LibreOffice or OpenOffice without any problems, as they are the native suites for this format. On macOS, there are also variants like NeoOffice, which is based on OpenOffice and LibreOffice but specifically adapted to the Apple environment.
You can also work with ODT in Google DocsSimply upload the file to Google Drive and open it as a Google Doc; you can edit it online and, if you wish, export it again as ODT, DOCX, PDF, and other formats. Compatibility is reasonably good, although some layout details may change.
Other programs like Corel WordPerfect They can open ODT documents, just like some lesser-known suites such as Lotus Symphony back in the day. And if you don't want to install anything on your computer, there are online viewers like GroupDocs that allow you to open and view ODT files directly in your browser, although usually without editing options.
In any case, if you are going to share the document with people who are not familiar with these toolsThe most convenient thing to do is usually to convert to PDF or DOCX first, to avoid the recipient having to struggle with formats that their program does not natively support.
Methods to convert ODT to PDF
Converting an ODT file to PDF is quite simple And it can be done in several ways. The most direct way is from the office suite itself with which the document was created: in LibreOffice Writer or OpenOffice Writer, simply use the "Export as PDF" or "Save as" option and choose PDF as the output format.
If you work with Adobe AcrobatYou can also generate a PDF from an ODT file. A practical example would be: download and install Adobe Acrobat Reader (or the version with creation features), open the application, go to the "Tools" section and choose "Create PDF". From there, select the ODT file from your computer, click "Create", and save the result to your preferred location.
Another option is to use a virtual PDF printer.On many systems, installing a PDF printer (such as Microsoft Print to PDF on Windows or third-party tools) allows you to "print" the ODT document to a PDF file, preserving the layout displayed on the screen. Simply open the ODT file with the appropriate editor, select the PDF printer, and save.
There are also numerous online converters. These programs accept ODT files as input and return a downloadable PDF. They are especially useful when you don't have an office suite installed or are working from someone else's computer, although it's always advisable to review the privacy and security terms, especially if the document contains sensitive information.
Other formats supported by document converters
Modern document converters often go far beyond ODT and PDFMany online services and desktop applications support a long list of input formats, including text, images, and source code, and can convert them to a multitude of output formats for integration into different workflows.
Among the formats that can be converted “from” We found extensions such as: .ASM, .BAS, .BMP, .C, .CPP, .CS, .CSV, .CXX, .DOC, .DOCX, .EML, .EPUB, .FB2, .GIF, .H, .HTM, .HTML, .HXX, .INC, .J, .JAV, .JAVA, .JPEG, .JPG, .JS, .LOG, .MHT, .MHTML, .MOBI, .ODT, .PAGES, .PAS, .PCX, .PSD, .PY, .RAS, .RB, .RTF, .S, .TGA, .TIF, .TXT, .VB, .VBS, .WBMP, .WP, .WPD, .WPS, .XHTML, .XLS, .XLSX, .XML and .XPS.
Regarding destination formatsIt is common to be able to convert to .CSV, .DOC, .DOCX, .EPUB, .HTML, .MOBI, .ODS, .ODT, .PDF, .RTF, .TXT, .XLS, .XLSX, and .XML, among others. This allows, for example, transforming a text document into an EPUB ebook, or converting a PDF to HTML for publishing on a website.
Among the most common document formats These converters typically support formats such as DOCX (Office Open XML), DOC (Word's classic binary format), RTF (Rich Text Format), ODT (OpenDocument Text), and TXT (Plain Text). This flexibility allows companies to standardize their documentation into more universal formats like PDF or DOCX without losing the original content created with other tools.
Alternatives on Windows: PDF24 Creator and others
If you work in Windows and need to handle many PDF conversionsThere are specific applications that simplify the process. One of the best known is PDF24 Creator, which offers functions similar to those of a virtual PDF printer and additional tools for combining, splitting, compressing, and managing PDF files.
PDF24 Creator acts as a kind of "Swiss Army knife" for PDFsYou can open documents in a multitude of formats supported by Windows and convert them to PDF through its interface, or simply print from any program to the PDF24 printer to generate the file. For users who frequently convert ODT, DOCX, or RTF files to PDF, it's a very practical solution.
Along with PDF24 Creator, there are many other alternatives.From LibreOffice and Microsoft Word's built-in export functions to Adobe tools, and even online services with integrated converters, the choice will depend on whether you prioritize local installation, privacy, automation, or ease of use.
Practical usage recommendations according to context
For professional use in varied environmentsA sensible strategy is usually the following: work on the document in the native format of your suite (DOCX if you use Word, ODT if you use LibreOffice/OpenOffice) and, once finished, generate a PDF to share with clients, suppliers or institutions.
If your organization only uses open source softwareODT can be the main working format without much problem, but even in that scenario it is advisable to rely on PDF for external publications and documents that may reach people without that same suite installed.
In mixed environments where Word and LibreOffice coexistIt is advisable to establish clear protocols: for example, define that internal drafts are exchanged in DOCX format and that final versions are left untouched once converted to PDF. This minimizes surprises caused by multiple back-and-forths between formats.
There is no single "best" format.Instead, there are more suitable options for each situation: DOCX and ODT for editing and collaboration, and PDF to ensure compatibility, appearance, and, to a large extent, content security. Understanding these nuances allows you to choose wisely in each case and avoid headaches when sharing important documents.
