Examples & live data
A public, browsable corpus of real mzPeak files — converted from open datasets across vendors, instruments, and modalities — is hosted for anyone to explore.
Browse the corpus
- Example data index ↗ — hundreds of
.mzpeakfiles alongside their originals, organized by type:- Imaging MS (MSI) — imzML datasets with per-pixel spatial coordinates + optical images
- Mass spectrometry — LC-/GC-MS across six vendors and every major analyzer class
- SDRF / ISA sample metadata — studies shipping their sample-annotation alongside the data
Every .mzpeak opens directly in a browser viewer over HTTP range requests — no download.
Open one in a viewer
From the index, click ▶ View on any file — the mzPeak Viewer streams it in place, whether it's a regular LC-/GC-MS run or an imaging (MSI) dataset.
Try it right here
The viewer below is the mzPeak Viewer, running entirely in your browser. Click Open demo to load a real run, or drop any .mzpeak file from the corpus onto it — the file is read in place over HTTP range requests and never leaves your machine.
Open a real dataset in a full window ↗
Why it's compact
Across the benchmark corpus, mzPeak files are consistently a fraction of the source mzML size (roughly 0.1–0.6×), losslessly — the payoff of columnar Parquet storage. See the per-instrument numbers on the home page.
A worked imaging example
The mouse urinary-bladder MS-imaging dataset reconstructs tissue anatomy label-free from lipid ion images. Loaded in the mzPeak Viewer and assigned to RGB channels, three masses separate the bladder-wall layers — urothelium, lamina propria, and muscle — straight from an mzPeak file in the browser.