jarvisbox

Data tools

Ten instant data utilities for CSV, JSON, YAML, XML, logs, dates, and more — all run entirely in your browser.

100% client-side · no upload · no tracking

Why use browser-based data tools?

Every tool on this page runs entirely inside your browser — your CSV files, JSON documents, logs, and configuration data never leave your device. That means instant results, complete privacy, and tools that work offline without requiring any signup or server-side processing. Whether you're merging CSVs from two exports, validating a JSON Schema, or expanding an IPv6 address, these tools give you developer-grade output in seconds.

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