Go to file

Sujal 22e4fe479e Initial commit		2026-10-12 14:36:14 +05:30
node_modules	Initial commit	2026-10-12 14:36:14 +05:30
public	Initial commit	2026-10-12 14:36:14 +05:30
uploads	Initial commit	2026-10-12 14:36:14 +05:30
README.md	Initial commit	2026-10-12 14:36:14 +05:30
add_sample_files.js	Initial commit	2026-10-12 14:36:14 +05:30
create_test_file.js	Initial commit	2026-10-12 14:36:14 +05:30
package-lock.json	Initial commit	2026-10-12 14:36:14 +05:30
package.json	Initial commit	2026-10-12 14:36:14 +05:30
sample_company_data.xlsx	Initial commit	2026-10-12 14:36:14 +05:30
sample_legacy.xls	Initial commit	2026-10-12 14:36:14 +05:30
server.js	Initial commit	2026-10-12 14:36:14 +05:30
test_workflow.js	Initial commit	2026-10-12 14:36:14 +05:30

README.md

Excel Management Web Application

A lightweight, high-performance web application to upload, view, and download Excel spreadsheets (.xlsx and .xls) with a Google Sheets-like table interface.

Features

Dashboard:
- Clean view of available Excel files with filenames, sizes, upload timestamps, and sheet counts.
- Drag-and-drop or click-to-browse Excel file uploader supporting .xlsx and .xls.
- Click any file card to open its complete spreadsheet view.
Spreadsheet Viewer (Google Sheets style):
- Column letters (A, B, C...) pinned above headers with sticky scrolling.
- Row numbers (1, 2, 3...) pinned on the left with sticky scrolling.
- Cell borders, alignment, and readable fonts.
- Multi-worksheet switching via bottom/top worksheet tabs.
- Progressive rendering chunking for high performance on large datasets.
Download:
- Prominent Download Original Excel button to download the authentic file with full fidelity.
Navigation:
- One-click Back to Dashboard navigation.
- Currently active filename badge.

How to Run

Open your terminal in this directory:
```
npm start
```
Open your web browser at:
```
http://localhost:3000
```

Testing

To run the automated end-to-end integration test suite:

node test_workflow.js