About Lab Tool

Lab Tool is a collection of fast, privacy-respecting developer utilities that run directly in your browser: JSON formatting, JWT decoding, hashing, SQL formatting, regex testing, and more.

Why We Built This

Most "paste your data into this website" tools quietly send that data to a server. When you're debugging a production JWT, formatting a customer's SQL export, or checking a live API key, that's a real risk. Lab Tool's utilities are built to run entirely client-side: what you paste stays in your browser tab.

What You Get

• Zero-latency execution for supported tools, with no server round-trip.
• A growing catalog of tools across JSON, security, databases, DevOps, and text utilities.
• Free and Pro tiers — most tools are free forever; a small set of advanced tools are part of Pro.

Our Principles

1. Privacy by default — client-side processing wherever technically possible.
2. No dark patterns — clear pricing, no surprise data collection.
3. Built for working developers — fast, keyboard-friendly, no unnecessary friction.

Have feedback or a tool request? Get in touch.