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MassQL Playground

Write a MassQL query, see it explained in plain English, and — optionally — run it against your own .mzML/.mgf/.json. It's MassQL running entirely in your browser — your file never leaves your machine.

Query

Loading engine…

Data — optional

Drop an .mzML, .mgf, or .json here
or click to choose · runs the query against it, in your browser

Matches

Plain English

Parsed structure


    

  


  

    Parse, translate, and run — all in your browser. It's the same MassQL
    engine that powers the fast MassQL CLI, so a query that runs here runs
    identically at scale. Big files are read fully into memory (browser limits apply),
    and the table caps at the first rows returned; the full match count is shown.
    Supported drops: .mzML, .mgf, GNPS .json.