CWS Light Table

A lightweight browser-based editor for simplified single-sheet CWS HTML documents, with a quick-action toolbar and dedicated print rendering.

Launch CWS Light Table

About

CWS Light Table is designed for practical table editing rather than full workbook authoring: open a CWS HTML file, edit values in a spreadsheet-like grid, filter and print the current sheet, import common workbook or text-like formats, export plain text formats, and save the result back as a standalone HTML file that opens directly in a browser.

Features

  • Open and save standalone CWS HTML
  • Import .xlsx, .xlsm, .xls
  • Import csv, tsv, txt, json, and xml
  • Plain-value grid editing with formula-bar support
  • Quick-action icon toolbar for common commands
  • Range, row, column, and whole-sheet selection
  • Copy, paste, fill-repeat, undo, and redo
  • Find and replace
  • Formal header-row control, filtering, and sorting
  • Page setup and dedicated browser print rendering
  • Export CSV, TSV, and TXT
  • Editable grid-size control through Grid Limits
  • Standalone saved-file parity for the implemented feature set
  • Optimized virtualized rendering for large datasets (10,000+ rows)
CWS Light Table editor interface showing grid editing with toolbar, formula bar, and imported spreadsheet data

Quick Start

Get up and running in two steps.

Requirements: Node.js + npm

npm install
npm run build # rebuild standalone runtime
npm run dev # start dev server

Default: http://127.0.0.1:4173/

Native Format

The native format is CWS HTML: an HTML document that embeds workbook data in a script#websheet-model element together with the lightweight runtime shell. Saved files open directly in any browser as a fully functional table editor.

Open Source

Released under the MIT License. See the LICENSE file for details.

Author

Mac Su

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Launch CWS Light Table View Releases GitHub Repository