MOBI to OXPS Converter

Convert MOBI ebooks to OXPS format — free online

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Standardized Document

MOBI to OXPS produces ECMA-standardized fixed-layout documents — a vendor-neutral format that preserves your ebook content precisely.

Quick Turnaround

Server-based processing converts your MOBI ebook to OXPS rapidly. Most files are processed and ready for download within seconds.

Secure Handling

Your MOBI upload is deleted right after conversion ends. OXPS output files are automatically purged from servers within 24 hours.

How to convert MOBI to OXPS

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose oxps or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your oxps file right afterwards

About formats

MOBI is an ebook format originally developed by Mobipocket SA, a French company founded in 2000 that was later acquired by Amazon in 2005. The format builds on the PalmDOC/PDB container structure, adding support for HTML-based content markup, embedded images, a DRM layer, and a JavaScript subset for limited interactivity. MOBI files use a record-based database architecture inherited from Palm OS, with a header structure containing metadata like title, author, publisher, and language followed by compressed HTML content records. The format became the foundation of Amazon's early Kindle ecosystem — the original AZW format used on first-generation Kindles was essentially MOBI with Amazon's own DRM wrapper. MOBI supports reflowable text with basic formatting including bold, italic, headings, lists, and tables, as well as internal hyperlinks and a built-in table of contents. One advantage is broad device compatibility: MOBI files are recognized by Kindle devices and apps spanning over a decade of hardware, as well as numerous third-party readers on desktop and mobile platforms. The format's lightweight structure is another strength — even long novels produce compact files that load quickly on modest hardware. While Amazon has since moved to the more capable AZW3/KF8 format for new publishing, MOBI remains widely circulated in existing ebook libraries and continues to be produced by conversion tools like Calibre for maximum Kindle compatibility.
Developer: Mobipocket SA
Initial release: 2000
OXPS (Open XPS) is a fixed-layout document format standardized as ECMA-388 in June 2009, representing an evolution of Microsoft's original XPS specification. The format packages fixed-layout pages, fonts, images, and metadata in a ZIP-based Open Packaging Conventions container — the same packaging framework used by DOCX, XLSX, and other Office Open XML formats. Each page is described using an XML markup language that specifies paths, glyphs, images, and canvas elements with precise coordinates, producing documents that render identically regardless of the viewing device or printer. OXPS incorporated several changes from the original XPS: the use of JPEG XR for high dynamic range images, support for the Open Packaging Conventions 2nd edition, and alignment with the Ecma standardization process. Windows 8 and later generate OXPS (rather than XPS) when printing to the Microsoft XPS Document Writer. One advantage is standards-based document fidelity — as an Ecma standard, OXPS provides a vendor-neutral, fully specified format for documents that must look identical everywhere they are rendered, essential for legal filings, regulatory submissions, and archival records. The fixed-layout model is another strength: unlike reflowable formats, OXPS documents preserve exact page composition including precise glyph positioning and vector graphics. Built-in support in Windows and the .NET framework provides native viewing and creation capabilities without third-party software.
Developer: Ecma International
Initial release: June 2009

Frequently Asked Questions

Why convert MOBI to OXPS?

OXPS is the standardized successor to XPS — it provides a vendor-neutral fixed-layout document format ideal for archiving or distributing ebook content.

What opens OXPS files?

Windows 8+ opens OXPS natively. Microsoft Edge, XPS Viewer (on Windows), SumatraPDF, and some Linux document viewers also support OXPS format.

How is OXPS different from XPS?

OXPS is the ECMA-standardized version of XPS with minor technical differences. It uses the .oxps extension and is the default in Windows 8+.

Is OXPS good for printing?

Yes — OXPS preserves exact page layout and typography, ensuring consistent printed output regardless of the viewing device or printer model.

Is this conversion free on Convertio?

Absolutely free. Upload your MOBI file, select OXPS, and download the result — no payment or registration required.