JsonExport
p/jsonexport
Convert JSON files to Excel instantly. 100% Client-side.
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John Olorunfemi

1mo ago

Handling large, sensitive JSON files fully in the browser. What edge cases should I watch for?

I m building JsonExport, a JSON to Excel/CSV converter that runs entirely in the browser.

The main motivation was privacy and scale. I kept running into tools that required uploading sensitive logs or customer data, or that completely fell apart once nested JSON or larger files were involved.

I decided to go fully client-side using streaming parsers and Web Workers, which has worked surprisingly well so far, even with very large files.

I m curious. For those of you who work with messy or sensitive JSON:

John Olorunfemi

1mo ago

And we are live!

Yeah. JsonExport.com is live and ready for would-be users.
And yes, it's also live on the Product Hunt page starting today.
Let's see what we can do collectively, shall we?

John Olorunfemi

1mo ago

JsonExport - Convert JSON files to Excel instantly. 100% Client-side.

JsonExport is a professional JSON to Excel/CSV converter that runs fully in your browser. Most tools are slow, insecure, and fail on nested data. JsonExport handles real-world JSON with privacy-first local processing, smart flattening that removes [object Object], and streaming support for 100MB+ files. It includes a simple editor and a data grid to preview before export. Free to use and open source.