Data Grid

A fast spreadsheet for CSV and TSV inside VS Code.

Most of the time you don’t need Excel for a data file — you need to see rows, jump around, find a value, tweak a cell, and save without the editor falling over on a big file. Data Grid opens local .csv and .tsv files as a calm grid: only the visible region is loaded from disk, so large files stay responsive. Light editing, column sort, undo, and a safe save path are there when you need them.

It is not a full workbook app (no XLSX, formulas, or pivot tables). It is a sharp tool for the plain-text data files you already keep.

Features

• Spreadsheet grid for local .csv and .tsv — opens as the default editor
• Find (⌘/Ctrl+F) with match highlight
• Go to cell (⌘/Ctrl+G — e.g. B12, 12, or B)
• Formula-style bar: name box + cell value
• Status bar: canvas size, file size, delimiter, used range; Reload from disk
• Live reload when the file changes on disk (external tools and agents)
• Sparse A–Z × 1000 canvas with disk-backed paging for large files
• Edit cells, copy/paste, insert/delete rows and columns
• Column types, distributions, missing values, and invalid-value warnings
• Interactive column filters and spreadsheet-safe copy for Google Sheets
• Resize, auto-fit, move, hide, and restore columns
• Sort column A→Z / Z→A
• Header row toggle (status bar): freezes row 1 for sort and uses it as column titles
• Undo / redo (⌘/Ctrl+Z, ⌘⇧Z / Ctrl+Y)
• Save writes only the used range (atomic temp-file write) and refuses to overwrite if the file changed on disk

All values are plain text. CSV uses commas; TSV uses tabs. Standard double-quote escaping and UTF-8.

Install

Search Data Grid in the Extensions view (⌘⇧X / Ctrl+Shift+X), or install by id:

code --install-extension zephyrindustries.datagrid

Open on the Visual Studio Marketplace →

Cursor / VSCodium / other VS Code forks: search the Marketplace from that app, or use its CLI (e.g. cursor --install-extension zephyrindustries.datagrid).

Open a spreadsheet

1. Open any .csv or .tsv file — it opens in Data Grid by default.
2. Switch to plain text: Data Grid: Open as Text (title bar or Command Palette), or Open With… → Text Editor.
3. Return to the grid: Data Grid: Open as Spreadsheet, or Open With… → Data Grid Spreadsheet.

Shortcuts (while the grid is active)

Column menu (header ▾ or right-click): insert/delete columns, Sort A→Z / Sort Z→A. Use the Header row control in the status bar when the first row is titles.

Requirements & limits

• Desktop VS Code (or a compatible fork) and local files only
• Not supported: XLSX, workbook formulas, remote/virtual workspaces, or VS Code for the Web

Optional: install from VSIX

Install a provided .vsix from the command line:

code --install-extension path/to/datagrid-*.vsix --force

Fully quit and reopen VS Code so the webview loads the new build.

Uninstall

code --uninstall-extension zephyrindustries.datagrid