DataLensia is a privacy-first, browser-based data toolkit that lets you visualize CSV datasets and work with JSON/NDJSON using tools like a JSON comparator, schema generator, editor, and converter — all processed locally.




DataLensia is a privacy-first, browser-based data toolkit that lets you visualize CSV datasets and work with JSON/NDJSON using tools like a JSON comparator, schema generator, editor, and converter — all processed locally.




DataFrog Tools is a free, privacy-first suite of 40+ developer utilities. All file conversions, formatting, and rendering happen 100% in your local browser. No data is ever uploaded or stored on a server, featuring secure Excel, CSV, JSON, and QIF tools.

JSONViewerTool is a free, browser-based suite of JSON utilities designed for developers, testers, and anyone working with APIs or structured data.



Free browser-based tools for PDF, image & data processing. 100% client-side - your files never leave your device. No limits, no watermarks.



