Local, private conversion

Convert XLS to JSON privately

Drop your XLS file, preview the JSON result locally, and download without uploading your file.

Stays in your browser Adjust before saving PDF Studio included

Drop one or more files here or choose from your device One file opens the detailed view; several create a private batch. Processed on this device

Common source formats

AVIFBMPCSVDOCXGIFHTMLICOJPG

How to convert XLS to JSON

Convert XLS to JSON locally in your browser. The file is read on your device, rewritten for the selected format, and downloaded without an upload step.

Steps

Drop or choose your XLS file.
Confirm JSON as the result format.
Preview the result when available, then download the converted file.

Best for

Extracting legacy Excel rows to CSV, TSV, or JSON.
APIs, configuration, and developer workflows.
Private browser-based conversion without an upload step.

What changes

APIs, configuration, and developer workflows.
Only the first worksheet is exported in this MVP.
Formulas are exported as cached cell values when present.
Formatting, charts, images, comments, and macros are not included.
Structured values are rewritten for the selected data format.

Can I convert XLS to JSON without uploading?

Yes. ConvertRS runs supported conversions in your browser and keeps the file on your device.

What changes when I create JSON?

APIs, configuration, and developer workflows. Only the first worksheet is exported in this MVP. Formulas are exported as cached cell values when present. Formatting, charts, images, comments, and macros are not included. Structured values are rewritten for the selected data format.

What happens to my original XLS file?

It stays on your device. The page reads the file locally so you can preview and download the converted result.