MzML

Writable

scientific · also known as MzML

Mass Spectrometry Markup Language (mzML) is a file format used to encode raw spectrometer output. The format is described in the mzML specification at the HUPO Proteomics Standards Initiative site. MzML, which was first released in 2008 and updated to version 1.1 in 2009, replaces two previous formats, mzDATA and mzXML. The new format was created to resolve confusion and reduce programming effort caused by having two separate but similar formats. The older formats continue to be used by some older software but are largely deprecated.

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Extensions	`.mzml.mxml`
MIME types	`text/xml`
Signatures	`3c3f786d6c` at byte 0 (Mass Spectrometry Markup Language)
PRONOM	`fmt/1900`
Wikidata	`Q28777707`

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Eclipse ChemClipseOpen sourcereads and writes · Eclipse Public License
Q2025399Open sourcereads and writes · Eclipse Public License 2.0
OpenMSOpen sourcereads · 3-clause BSD License
ProteoWizardOpen sourcereads · Apache License
Q116701580Open sourcereads · GNU General Public License, version 3.0

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Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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