A fast, lightweight desktop viewer and editor for Parquet and CSV files.
parqedit.com · Download · Issues
- Instant open — large files load in seconds via DuckDB's columnar engine
- View & edit — double-click any cell to edit values inline
- Sort & filter — click column headers to sort; per-column value filters
- SQL mode — run arbitrary SQL queries directly against the open file
- Column resize — drag column borders to adjust widths; hover headers for full name tooltip
- Row/column selection — click row numbers or column headers to select ranges; Ctrl+C copies as TSV (Excel-compatible)
- Multi-window — drag a second file onto the window to open it side-by-side in a new window
- File association — set ParqEdit as the default app for
.parquetfiles; double-clicking opens directly - Dark / light theme — follows system preference, toggleable in settings
- Export — save the current view (with any edits or SQL results) back to Parquet or CSV
- Fully local — all processing happens on your machine. Your files are never uploaded anywhere.
- No telemetry — ParqEdit makes no network requests and collects no usage data.
- Works offline — no internet connection required after installation.
- No background processes — the app runs only when you open it and leaves nothing running when closed.
- Open source — the entire codebase is here, so you can audit exactly what it does.
| Format | Read | Write |
|---|---|---|
Apache Parquet (.parquet) |
✓ | ✓ |
CSV (.csv) |
✓ | ✓ |
- OS: Windows 10/11 x64
- Node.js: 18 or later (for building from source)
- npm: 9 or later
Download the latest installer from the Releases page and run it. ParqEdit installs per-user with no admin rights required.
git clone https://github.com/ooliJP/ParqEdit.git
cd ParqEdit
npm install # also downloads and patches the DuckDB native binary
npm run dev # start in development mode with hot reloadnpm run dist # produces an NSIS installer in release/npm run dist:zip # produces a zipped folder in release/Note: Code signing is disabled by default. Windows SmartScreen may warn on first run of unsigned builds, click "More info → Run anyway".
electron/
main/ — main process (DuckDB IPC handlers, window management)
preload/ — context bridge (exposes a typed API to the renderer)
src/
components/ — React UI components (DataTable, Toolbar, SQLEditor, …)
store/ — Zustand state store
hooks/ — useTheme and other shared hooks
assets/ — app icon
scripts/ — afterPack hook (strips unused Electron locale files)
fix-duckdb.js — downloads the DuckDB native binary and patches its loader
DuckDB ships as a native Node.js addon (duckdb.node). Its normal loader relies on @mapbox/node-pre-gyp at runtime, which breaks inside Electron's asar bundle.
fix-duckdb.js (run automatically by npm install via postinstall) does two things:
- Downloads the prebuilt N-API binary for your platform using node-pre-gyp
- Patches
duckdb-binding.jsto load the binary by direct path instead
The binary is excluded from git (.gitignore) and reproduced locally on each npm install, so contributors never need to compile C++ themselves.
| Shell | Electron 33 |
| UI | React 18 + TypeScript |
| Styling | Tailwind CSS |
| Build | electron-vite (Vite) |
| Database | DuckDB 1.4 (N-API) |
| State | Zustand |
| Virtual scroll | TanStack Virtual |
| SQL editor | CodeMirror 6 |
| Packaging | electron-builder + NSIS |
Pull requests are welcome. For larger changes please open an issue first to discuss the approach.
- Fork the repo and create a feature branch
npm install && npm run devto get a working dev environment- Make your changes; the renderer hot-reloads automatically
- Open a PR - describe what changed and why
GPL v3 — see LICENSE.