React Spread Sheet Excel - Lightning Fast Excel Component for React ⚡

The fastest, most lightweight React spreadsheet component - Render 100,000+ cells with blazing performance. Perfect for building Excel-like applications, data grids, and complex data entry forms in React.

🚀 Why Choose React Spread Sheet Excel?

• ⚡ Blazing Fast - Optimized virtual scrolling renders 100,000+ cells smoothly
• 🪶 Ultra Lightweight - Only ~300KB, no heavy dependencies
• 🧮 Excel-like Formulas - Full calculation engine with cell references (=A1*B2+C3)
• 🎨 Rich Formatting - Bold, italic, underline, colors, alignment, and more
• 📊 Merge Cells - Combine cells like in Excel
• ↩️ Undo/Redo - Full history management
• ⌨️ Keyboard Navigation - Arrow keys, shortcuts, Excel-like experience
• 📋 Copy/Paste - Multi-cell selection and clipboard operations
• 📁 Import/Export - CSV and XLSX support
• 🔒 Read-Only Mode - Display data without editing
• 🎯 100% Test Coverage - Reliable and production-ready
• 📱 TypeScript Support - Full type definitions included

📺 Live Demo

Try it now →

⚡ Performance

This library is highly optimized for performance. See our Performance Guide for:

• Detailed benchmarks
• Optimization techniques
• Best practices
• Memory management tips

📦 Installation

npm install react-spread-sheet-excel

yarn add react-spread-sheet-excel

pnpm add react-spread-sheet-excel

🎯 Quick Start

import React, { useRef, useState } from "react";
import Sheet, { SheetRef } from "react-spread-sheet-excel";

function App() {
  const [data] = useState([
    [{ value: "Product" }, { value: "Price" }, { value: "Quantity" }, { value: "Total" }],
    [{ value: "Apple" }, { value: "1.5" }, { value: "10" }, { value: "=B2*C2" }],
    [{ value: "Banana" }, { value: "0.8" }, { value: "15" }, { value: "=B3*C3" }],
  ]);
  
  const sheetRef = useRef<SheetRef>(null);

  const handleChange = (row?: number, col?: number, value?: string) => {
    console.log(`Cell [${row}, ${col}] changed to: ${value}`);
  };

  const getData = () => {
    const updatedData = sheetRef.current?.getData();
    console.log("Current data:", updatedData);
  };

  return (
    <div>
      <button onClick={getData}>Get Data</button>
      <Sheet data={data} onChange={handleChange} ref={sheetRef} />
    </div>
  );
}

export default App;

🎨 Features in Detail

⚡ Performance Optimized

Our spreadsheet uses advanced virtual scrolling and memoization techniques to handle massive datasets:

• Virtual Rendering: Only visible cells are rendered
• Optimized Re-renders: Smart memoization prevents unnecessary updates
• Calculation Caching: Formula results are cached for instant display
• Lazy Loading: Rows load on-demand as you scroll

Benchmark: Renders 1000 rows × 100 columns in milliseconds!

🧮 Excel-like Formulas

Full calculation engine supporting:

// Cell references
=A1 + B2

// Complex formulas
=A1 * B2 + (C3 - D4) / E5

// Multiple operations
=(A1 + A2 + A3) * 0.1

🎨 Rich Text Formatting

// Apply formatting via toolbar or keyboard shortcuts
Ctrl/Cmd + B  // Bold
Ctrl/Cmd + I  // Italic
Ctrl/Cmd + U  // Underline

// Programmatic styling
const styledData = [
  [{ 
    value: "Header", 
    styles: { 
      fontWeight: "bold", 
      background: "#4CAF50", 
      color: "white" 
    } 
  }]
];

📋 Copy/Paste Operations

• Multi-cell selection: Click and drag or Shift+Arrow keys
• Copy: Ctrl/Cmd + C
• Cut: Ctrl/Cmd + X
• Paste: Ctrl/Cmd + V
• Select All: Ctrl/Cmd + A

📁 Import/Export

CSV Export

import { SheetRef } from "react-spread-sheet-excel";

const sheetRef = useRef<SheetRef>(null);

// Export to CSV
const exportCSV = () => {
  sheetRef.current?.exportCsv("mydata", true); // true = include headers
};

XLSX Import/Export

npm install @e965/xlsx

import * as XLSX from "@e965/xlsx";
import { getCalculatedVal, printToLetter } from "react-spread-sheet-excel";

// Import XLSX
const importFromXlsx = (file: File, onSuccess: (data: any[][]) => void) => {
  const reader = new FileReader();
  reader.onload = (e) => {
    const arrayBuffer = e.target?.result as ArrayBuffer;
    const workbook = XLSX.read(arrayBuffer, { type: "array" });
    const worksheet = workbook.Sheets[workbook.SheetNames[0]];
    const jsonData = XLSX.utils.sheet_to_json(worksheet, { header: 1 }) as any[][];
    
    const formatted = jsonData.map((row) => 
      row.map((cell) => ({ value: cell }))
    );
    onSuccess(formatted);
  };
  reader.readAsArrayBuffer(file);
};

// Export XLSX
const exportToXlsx = (data: any[][], fileName = "export.xlsx") => {
  const aoa = data.map((row) =>
    row.map((cell) => {
      if (cell.value?.toString().startsWith("=")) {
        return getCalculatedVal(cell.value, data);
      }
      return cell.value;
    })
  );
  
  const worksheet = XLSX.utils.aoa_to_sheet(aoa);
  const workbook = XLSX.utils.book_new();
  XLSX.utils.book_append_sheet(workbook, worksheet, "Sheet1");
  XLSX.writeFile(workbook, fileName);
};

📖 API Reference

Props

Prop	Type	Default	Description
data	any[][]	[[]]	Initial spreadsheet data (2D array)
onChange	(row?, col?, value?) => void	-	Callback fired on cell changes
resize	boolean	false	Enable column resizing
hideXAxisHeader	boolean	false	Hide column headers (A, B, C...)
hideYAxisHeader	boolean	false	Hide row numbers (1, 2, 3...)
headerValues	string[]	['A','B','C'...]	Custom column headers
readonly	boolean	false	Make spreadsheet read-only
hideTools	boolean	false	Hide formatting toolbar
autoAddAdditionalRows	boolean	true	Auto-add rows when scrolling

Ref Methods

Method	Parameters	Returns	Description
getData	-	Data[][]	Get current spreadsheet data
setData	data: Data[][]	void	Replace all data
exportCsv	filename: string, includeHeaders?: boolean	void	Export to CSV file
updateOneCell	row: number, col: number, value: any	void	Update single cell
getOneCell	row: number, col: number	Data	Get single cell data

Data Format

interface Data {
  value: string | number;
  styles?: { [key: string]: string };
  type?: string;
  colSpan?: number;
  rowSpan?: number;
  skip?: boolean; // For merged cells
}

🎯 Use Cases

📊 Data Entry Forms

Perfect for complex data entry with calculations, validations, and formatting.

📈 Financial Applications

Build budgeting tools, expense trackers, and financial calculators.

📋 Inventory Management

Track products, quantities, prices with automatic calculations.

📊 Report Builders

Create dynamic reports with user-editable data and formulas.

🎓 Educational Tools

Build interactive spreadsheet tutorials and exercises.

🔧 Advanced Examples

Custom Styling

const styledData = [
  [
    { 
      value: "Revenue", 
      styles: { 
        fontWeight: "bold", 
        fontSize: "16px",
        background: "#2196F3",
        color: "white",
        textAlign: "center"
      } 
    },
    { value: "=B2+B3+B4", styles: { fontWeight: "bold" } }
  ]
];

Merged Cells

const mergedData = [
  [
    { value: "Merged Header", colSpan: 3, rowSpan: 1 },
    { skip: true },
    { skip: true }
  ]
];

Read-Only Cells

<Sheet 
  data={data} 
  readonly={true}  // Entire sheet read-only
/>

Custom Headers

<Sheet 
  data={data}
  headerValues={["Product", "Q1", "Q2", "Q3", "Q4", "Total"]}
/>

🎮 Keyboard Shortcuts

Shortcut	Action
Arrow Keys	Navigate cells
Shift + Arrow	Select multiple cells
Ctrl/Cmd + C	Copy
Ctrl/Cmd + X	Cut
Ctrl/Cmd + V	Paste
Ctrl/Cmd + Z	Undo
Ctrl/Cmd + Shift + Z	Redo
Ctrl/Cmd + B	Bold
Ctrl/Cmd + I	Italic
Ctrl/Cmd + U	Underline
Ctrl/Cmd + A	Select all
Delete/Backspace	Clear selected cells
Enter	Edit cell
Esc	Cancel edit

🧪 Testing

100% test coverage with comprehensive unit tests:

npm test

📚 Resources

• Performance Guide - Optimization tips and benchmarks
• Live Demo
• CodeSandbox Example
• StackBlitz Example
• Medium Article: Building a Lightning-Fast Spreadsheet
• Medium Article: State Management Without Redux

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

ISC License - see LICENSE file for details

👨‍💻 Author

Sojin Antony

🌟 Show Your Support

If this project helped you, please give it a ⭐️!

🔍 Keywords

react spreadsheet, react excel, react data grid, react table, excel component, spreadsheet component, data entry, virtual scrolling, formula calculation, cell formatting, react datagrid, editable grid, react grid, excel-like, spreadsheet editor, data table, react table editor, lightweight spreadsheet, fast spreadsheet, performance spreadsheet

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