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Spectral processing and comparison

MassQL Playground

Browser-based MassQL query editor and runner for exploring fragmentation patterns in local mass-spectrometry files.

LC-MSWeb applicationFree web service
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Overview

MassQL Playground parses queries, explains their structure and runs them against local data in the browser. It provides a lightweight way to develop a spectral query before using the same language in larger analyses.

What can this tool do?

MS/MS processing

Common uses

  • Develop and inspect fragmentation-pattern queries.
  • Search a local spectral file and export matching rows.

Scientific fit

Primary function

Spectral processing and comparison

Data compatibility

Inputs

Mass spectra

Outputs

Human-readable report

Input formats

mzML, MGF, JSON, MassQL query text

Output formats

CSV or TSV, JSON

Scope and considerations

Designed for

  • Interactive MassQL query development and local spectral searching.

Not designed for

  • Raw feature detection or definitive molecular identification from a query match.

Important requirements

  • A modern browser and a supported local spectral file for execution.

Considerations

  • The app reads whole files into browser memory; large files may exceed available resources.
  • Displayed rows are capped even when the reported match count is larger.
  • Retain the query and input-file identity to make results reproducible.

Access and documentation

Primary access

Public browser app with local file processing. Hosted availability does not establish the license of the underlying engine or reference data.

Evidence and review

Official app page and GNPS2 app index reviewed on 2026-09-11. No standalone publication for this interface verified; the canonical MassQL entry holds method publications. No file processing or independent benchmark performed.

No dedicated scholarly publication is listed. Follow the official documentation and resource-specific citation guidance.

Software and documentation citations

  • GNPS2 Next Gen Web Apps. MassQL Playground interface and usage notes. Accessed 11 September 2026. Documentation

Related tools

GNPS2 MassQL AnalysisAlternative to · Hosted library-query interface with LLM assistance, rather than local browser-file execution.MassQLIntegrates with · Runs the MassQL query engine.GNPSPart of · Listed among GNPS2 Next Gen Web Apps.

Entry history

Changes to this catalogue entry, not the tool's software release history. Acceptance and editorial review are separate.

  1. 2026-09-11 · First committed entry

    Add MassQL interfaces and TinyMass with reviewed scope

    View change · Entry at this revision

Full GitHub history