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OTB to OXPS Converter

Turn OTB image data into OXPS document format online

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Image to Document

Convert legacy OTB images into OXPS documents for professional distribution. Open XML Paper Specification is recognized across all platforms.

Any Device Works

Convert OTB to OXPS from Windows, macOS, Linux, or mobile — the browser-based tool adapts to any screen size and operating system.

Privacy Protected

Your OTB files are deleted immediately after conversion to OXPS. Converted files are automatically removed from servers within 24 hours.

How to convert OTB 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

OTB (Over-the-Air Bitmap) is a monochrome image format developed by Nokia as part of their Smart Messaging specification in 1997, designed for transmitting small graphics — operator logos, group graphics, and picture messages — to Nokia mobile phones via SMS. OTB files contain 1-bit (black and white) images at small fixed resolutions, typically 72x14 pixels for operator logos and 72x28 pixels for group graphics, encoded in a compact binary format suitable for embedding within the payload of SMS text messages. The format uses a simple structure: a header byte indicating whether the image is an operator logo or group graphic, width and height values, and the raw bitmap data where each bit represents one pixel packed eight per byte. The extremely tight format — designed to fit within a single SMS message (140 bytes maximum payload, shared with addressing overhead) — reflects the severe constraints of mobile communication in the late 1990s. Nokia's Smart Messaging system was one of the first commercial implementations of rich content delivery to mobile phones, and OTB images represented the entire visual content capability of Nokia handsets before MMS and mobile data browsing arrived. One advantage is the format's historical role as a pioneer of mobile visual messaging: OTB images were among the first graphics that ordinary consumers could send to each other's phones, predating MMS, camera phones, and smartphones by nearly a decade. The format's minimal footprint is another characteristic — entire images fit in a few dozen bytes, reflecting an era of extreme bandwidth constraints. OTB files are supported by ImageMagick, various Nokia phone management tools, and specialty mobile format utilities.
Developer: Nokia
Initial release: 1997
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 OTB to OXPS?

OXPS is an updated XPS document format. Wrapping your OTB image in OXPS makes it easier to distribute, print, and archive alongside text content.

How do I open an OXPS file?

Software that handles OXPS includes XPS Viewer (Windows 8+), Evince, Okular — giving you options on every major operating system.

Can I convert multiple OTB files to OXPS at once?

Convertio supports batch mode — drag in multiple OTB files and they all convert to OXPS together, which is much faster than one-by-one.

Is OTB to OXPS conversion free?

Yes — Convertio offers free OTB to OXPS conversion. Premium options exist for users who need more capacity or faster processing speeds.

What exactly is the OTB format?

OTB is an Over-The-Air bitmap format for early Nokia phones. Originally from Nokia mobile phones, it has become a legacy format — conversion is the most practical way to use these images today.