About Online Data Tools

Free browser-based tools for everyday data work.

What We Build

Online Data Tools is a growing collection of practical online utilities for working with text, JSON, CSV, hashes, encoders, timestamps, colors, regular expressions, and other developer tasks. The goal is simple: open the page, finish the task, and move on without account setup or unnecessary friction.

Privacy-First Tools

Most tools run directly in your browser. Text, JSON, CSV, code, and files you paste into the tools are processed locally and are not uploaded to our servers. You can learn more in our privacy policy.

Popular Utilities

Text Compare for checking differences between text, strings, code, and files.
JSON Compare for finding structural differences in JSON objects and API responses.
JSON Formatter for beautifying, validating, and minifying JSON.
CSV Formatter and CSV Viewer for cleaning and inspecting CSV data.
Hash Generator for creating common hashes such as MD5, SHA-1, and SHA-256.

Feedback

We improve the tools based on real workflow problems: confusing output, missing export options, slow pages, or formats that should be supported. Send feedback, feature requests, or bug reports through the contact page.