1
Upload XLSSelect your XLS spreadsheet.
2
JSON Settings
3
Convert to JSON
4
Download JSON
spreadsheet Converter• 100% Client-Side

Excel XLS to JSON Converter

xls→json

Drop XLS file here, or browse

Select file for private local conversion

Private by Design

Your files are processed directly on your device using WebAssembly, HTML5 Canvas, and client-side runtimes.

No server upload No cloud copy 100% local processing
How To Convert

How to convert XLS to JSON

Step 1

Upload XLS

Select your XLS spreadsheet.

Step 2

JSON Settings

Configure header mapping and indentation options.

Step 3

Convert to JSON

Parse spreadsheet rows into structured JSON array.

Step 4

Download JSON

Download JSON data file.