zippydevtoolsJSON
XLSX to JSON
Convert the first worksheet of an XLSX file into JSON in the browser.
Security notice
- Review inputs and results before sharing sensitive data or using them in critical workflows.
Processed locally
LocalFile
Input
XLSX file
Output
Process the input to see the result here.
Quick examples
Convert a spreadsheet
Input: Upload report.xlsx
Output: JSON array created from the first worksheet.
XLSX to JSON FAQ
Which worksheet is converted from XLSX?
The tool converts the first available worksheet in the file.
Can I upload any file type?
No. Input must be a file with .xlsx extension.
What if the first sheet is empty?
The tool returns an error saying the first sheet has no tabular data.
How are JSON keys defined?
When a header row exists, those header values become object keys.
Is the file uploaded to a server?
No. Reading and conversion run locally in the browser.
Related workflow links