Top-Intensity Peak Filter for Mass-Spec CSV Export
Top-Intensity Peak Filter: keeps only the 20 most intense peaks (assumes m/z, intensity columns), for a mass-spec CSV export. Paste data, transform instantly, export CSV/JSON — 100% in your browser. For proteomics labs.
Paste a mass-spec CSV export and this tool keeps only the 20 most intense peaks (assumes m/z, intensity columns), then exports clean CSV or JSON ready for analysis. No upload and no R/Python needed — parsing and computation happen entirely in your browser, so proteomics labs keep raw instrument data on the device.
Cleaned output
| m/z | intensity | charge\n445.12 | 10243 | 2\n553.27 | 8821 | 1\n | \n445.12 | 10243 | 2 |
The parser auto-detects comma, tab, semicolon or pipe delimiters. After transforming, copy the CSV or download CSV/JSON for your pipeline. Always sanity-check the result against your raw data.
Indicative planning tool for research operations. Figures are estimates — verify lot data, expiry, calibration and budgets against the original certificates, vendor documentation and your institution's policies.
Free top-intensity peak filter for mass-spec CSV export: keeps only the 20 most intense peaks (assumes m/z, intensity columns), then export CSV/JSON — runs offline in your browser, no upload.
About Top-Intensity Peak Filter for Mass-Spec CSV Export
A free, offline data tool for proteomics labs. Paste a mass-spec CSV export and this tool keeps only the 20 most intense peaks (assumes m/z, intensity columns), then exports clean CSV or JSON ready for analysis. No upload and no R/Python needed — parsing and computation happen entirely in your browser, so proteomics labs keep raw instrument data on the device.
How to use Top-Intensity Peak Filter for Mass-Spec CSV Export
- 1Paste your mass-spec CSV export (or click "Load sample" to see the expected layout).
- 2The tool auto-detects the delimiter and keeps only the 20 most intense peaks (assumes m/z, intensity columns) instantly.
- 3Review the output, then copy the CSV or download CSV/JSON for the next step.
Why use Top-Intensity Peak Filter for Mass-Spec CSV Export?
- ✓Purpose-built for a mass-spec CSV export: it keeps only the 20 most intense peaks (assumes m/z, intensity columns) in one paste — no spreadsheet gymnastics and no code.
- ✓Runs fully client-side, so raw instrument data never leaves the browser — important for proteomics labs handling confidential or pre-publication results.
- ✓Exports clean CSV or JSON that drops straight into R, Python, Prism, Excel or your LIMS.
Frequently asked questions
What exactly does this tool do to my mass-spec CSV export?+
It keeps only the 20 most intense peaks (assumes m/z, intensity columns). You paste the raw export, the parser detects the delimiter (comma, tab, semicolon or pipe), the transform runs, and you see the result plus a one-line summary of what changed. You can then copy the CSV or download CSV/JSON. It is deliberately one well-defined operation so the output is predictable and reproducible.
Is my instrument data uploaded anywhere?+
No. All parsing and computation happen locally in your browser with JavaScript — nothing is sent to a server. That keeps a mass-spec CSV export private, which matters for proteomics labs handling unpublished or confidential results, and it means the tool also works offline.
What input and output formats are supported?+
Input can be CSV, TSV, or semicolon/pipe-delimited text copied straight from your instrument software or a spreadsheet — the delimiter is auto-detected. Output is standard RFC-4180 CSV (copy or download) or a JSON array of objects keyed by the header row.
How should I sanity-check the result?+
Spot-check a few rows against your raw file, especially headers and any computed columns. This tool applies a single transform faithfully, but it can't know your specific column quirks — confirm it picked the right columns (e.g. the Cq, OD, area or A260 column) before using the output downstream.
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