About ToolPad

ToolPad is a collection of free online developer utilities. We built it to help developers format JSON, decode JWTs, generate UUIDs, convert timestamps, test regex, encode and decode Base64 and URLs, generate hashes, and more — without sign-ups, accounts, or sending your data to our servers.

Our Mission

Developer tools should be fast, reliable, and respectful of your privacy. Too many tools require creating an account, send your data to a remote server, or clutter the experience with unnecessary features. ToolPad does none of that. Every tool on the site works entirely in your browser — your data never travels over the network.

We also believe that useful tools should be freely accessible. ToolPad is supported by advertising rather than subscriptions or paywalls, so everything stays free for everyone.

Privacy-First and Client-Side

All tool processing happens locally in your browser using standard browser APIs and JavaScript. Your inputs and outputs never leave your device. We don't store, log, or transmit the data you paste into our tools. That means you can work with sensitive JSON payloads, authentication tokens, cryptographic hashes, or proprietary configuration files without worrying about us seeing or keeping them.

This is not just a marketing claim — it is a technical fact. The server serves the page, and then all computation happens in your browser. There is no back-end processing of your tool inputs.

Who It's For

ToolPad is designed for software developers, DevOps engineers, QA engineers, and anyone who regularly works with data formats and encodings. Whether you are debugging an API response, inspecting a JWT from an auth service, converting a Unix timestamp from a log file, or validating a regex pattern, ToolPad gives you a clean, no-friction interface to get the job done quickly.

The tools are intentionally simple. They do one thing and they do it well. There are no accounts to manage, no settings to configure, and no learning curve.

Available Tools

• JSON Formatter & Validator — Pretty-print, minify, and validate JSON
• JSON Diff — Compare two JSON objects and highlight differences
• JSON to CSV Converter — Convert JSON arrays to CSV format
• JWT Decoder — Decode and inspect JSON Web Token headers and payloads
• Base64 Encode/Decode — Convert text to Base64 and back
• URL Encode/Decode — Percent-encode and decode URL components
• Hash Generator — Generate MD5, SHA-1, and SHA-256 hashes
• UUID Generator — Generate v4 and v1 UUIDs in bulk
• Timestamp Converter — Convert between Unix timestamps and human-readable dates
• Regex Tester — Test regular expressions with match highlighting

Technology

ToolPad is built with Next.js and React, styled with Tailwind CSS, and deployed on Vercel. Cryptographic operations use the browser Web Crypto API and the crypto-js library. UUID generation uses the well-tested uuid npm package. All dependencies are open-source.

Contact

If you have feedback, questions, feature requests, or bug reports, please visit our Contact page. We read every message and do our best to respond.