Free online XMI to PDF converter

An .xmi file may contain a UML model or eXtended MIDI (XMIDI) game music, and the two formats require different conversion paths. This page handles both so the result can be printed, shared, or opened by recipients without the original modeling or music software.

How to tell which XMI file you have

Check the program that created the file and inspect its beginning with a text editor or binary viewer:

• UML model XMI is normally plain-text XML. It often begins with an XML declaration such as <?xml and contains an XMI namespace such as xmi:. Eclipse Papyrus, Cameo Systems Modeler, Enterprise Architect, IBM Rational tools, Visual Paradigm, and other modeling applications create these files. The content describes model elements, relationships, diagrams, and properties rather than pixels or page layouts.
• eXtended MIDI (XMIDI) XMI is a binary Interchange File Format file. Its header commonly contains the chunk identifiers FORM and XMID. Older computer games and game engines used it for sequenced music, sometimes storing it inside a game archive instead of as a standalone file.

An XML declaration or readable tags usually indicate a UML model; unreadable binary data containing FORM and XMID indicates XMIDI music. Do not select the music mode for an XML model, or the UML mode for a binary XMIDI file.

XML Metadata Interchange models to PDF

XML Metadata Interchange (XMI) is an OMG-defined XML interchange format for UML and related model data. It can store classes, activities, states, components, profiles, stereotypes, properties, relationships, and sometimes diagram coordinates. It is a model-exchange format, not a finished page description.

Import the file into the application that created it, or into a compatible UML tool, then render the required diagrams with its print, report, or PDF-export function. A model that contains only semantic elements may be laid out differently after import. Vendor-specific extensions, UML profiles, linked images, fonts, and diagram metadata may be lost, so the original application normally gives the most accurate result. UML activity and other diagram types can resemble flowcharts or mind maps, but that appearance is preserved only when the importer understands the source model and its layout data.

EXtended MIDI music to PDF

eXtended MIDI (XMIDI) is a game-music format derived from MIDI. It stores timed musical events, instrument information, and game-oriented sequence or control data; it does not contain engraved staff notation or fixed page geometry.

To create readable sheet music, decode the file to standard MIDI with a utility such as xmi2mid or XMI2MIDI, open the resulting .mid file in notation software such as MuseScore, correct instruments, tempo, voices, and note grouping, and export the score as PDF. A direct converter can create PDF only when it includes a notation-rendering stage; otherwise, converting XMIDI to MIDI alone produces playable event data, not a printable score.

PDF format

PDF preserves page size, fonts, text, vector graphics, images, and pagination across common operating systems. It is suitable for distributing rendered diagrams or music notation, but it does not preserve an editable UML repository, playable MIDI events, game-specific sequencing, or the original model’s semantic relationships.

How to convert XMI to PDF

1. Open the XMI converter on 101convert.com and select the XMI input type.
2. Set the format switch to UML model for XML model, mind-map, or flowchart-like files, or to Game music (eXtended MIDI) for binary XMIDI files.
3. Upload the file and start the conversion. The service can process the selected type without installing desktop software.
4. Download the PDF and inspect every page, diagram, staff, label, image, and page break before printing or sharing.

For a confidential UML model, unreleased game asset, or file subject to retention restrictions, use compatible desktop software and a local export instead of uploading the source.

Quality and compatibility limits

UML results depend on the XMI version, namespaces, supported UML profiles, vendor extensions, stored layout coordinates, external resources, and available fonts. Importing into another product can change notation, connector routing, labels, page scale, and diagram placement; missing dependencies can produce incomplete or blank diagrams. Export from the source modeling application when diagram fidelity matters.

XMIDI notation conversion is interpretive. Looping, branching, embedded cues, percussion mappings, unusual timing, and game-specific commands may be ignored or misread by ordinary MIDI and notation software. Manual cleanup is often required, and the PDF cannot retain interactive playback or game-engine behavior.