About Dev Tools Suite
A free collection of developer utilities that run in your browser. Format data, convert formats, validate configs, and chain tools together — without creating an account.
What this site is
Dev Tools Suite (devutilities.net) gathers everyday developer utilities in one place: JSON and text formatters, encoders, JWT inspection, hash generators, OpenAPI helpers, and AI-oriented tools such as an MCP config validator, token counter, and agent builder.
You can open a single tool, or start a short workflow so the output of one step becomes the input of the next.
How it works
Almost every tool processes your input in the browser. Paste data, drop a file, or use the command palette (Ctrl+K) to find a tool or describe a task.
Recent tools, pins, and optional editor history stay in this browser’s localStorage so you can pick up where you left off on the same device.
Privacy in plain terms
Local tools do not upload your payloads for processing. A few Network tools (WHOIS and DNS) contact public internet services and say so in the UI.
There are no accounts and no ads inside the editors. Details are on the Privacy page.
Who it’s for
Builders, QA engineers, and anyone who needs a quick, private place to format, inspect, or convert data — including people assembling MCP configs or estimating LLM token budgets before pasting into Cursor or Claude Desktop.