# mgcrea/node-xlsx

NodeJS excel file parser & builder

Repository: https://github.com/mgcrea/node-xlsx
Canonical: https://ross.abutalabs.com/products/node-xlsx
Language: TypeScript
License: NOASSERTION
License Family: other
Last push: 2024-07-04T14:02:39+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4935, "days_push": 790, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3039, forks 271 (observed 2026-08-28T04:07:39.199490+00:00)

## What it is
A Node.js library for parsing and building Excel (xlsx/xls) files, built as a convenient wrapper around SheetJS. It offers a simple API to read spreadsheets from files or buffers and generate Excel files from arrays of data, with options for column widths and merged cells.

## Use cases
- parse xlsx files in nodejs
- generate excel spreadsheets from data
- convert excel sheets to javascript arrays
- export data to xlsx with custom column widths
- read excel files from a buffer
- create spreadsheets with merged cells

## When to choose
- you need a simple, typed API to read or write Excel files in Node.js
- you want a thin convenience layer over SheetJS for common xlsx tasks
- you need to build spreadsheets with column widths or merged ranges

## When to avoid
- you need advanced Excel features like formulas, styling, or charts
- you are not in a Node.js environment (e.g. browser or Python)
- you need streaming processing of very large spreadsheets

## Facets
- artifact type: library
- maturity: stable
- function: parser, serialization, developer-tools
- domain: files, spreadsheets, developer-tools
- platform: cross-platform
- tags: excel, xlsx, spreadsheet, typescript, sheetjs, nodejs

## Member repositories
- mgcrea/node-xlsx (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:39.199490+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:29:16.151738+00:00, confidence not recorded.
  - readme: https://github.com/mgcrea/node-xlsx (fetched 2026-08-28T04:07:39.199490+00:00, sha c2212365aad6)
  - registry_npm: https://registry.npmjs.org/node-xlsx (fetched 2026-08-29T09:44:38.480820+00:00, sha b4f9b525fb93)
- Data as of 2026-08-30T08:39:29.467469+00:00.