About Us

Simple Tools. Faster Code.

CodeNimbleTools is a collection of free, fast, focused developer tools — the kind of utilities you reach for twenty times a week: converting a cURL command, decoding a JWT, checking a cron schedule, flattening a JSON blob.

We built it around three principles:

• Everything runs in your browser. Your JSON, tokens and configs are processed by JavaScript on your own machine. Nothing you paste into a tool is uploaded, stored or logged.
• No friction. No sign-ups, no paywalls, no "3 free conversions per day". Open a tool, paste, get your answer.
• Honest tools. Every tool states its limitations plainly — like the JWT decoder telling you it does not verify signatures. A tool that oversells itself is a tool that causes bugs.

What's here

Fifty tools across three families: JSON & data (converters, extractors, inspectors), API & backend (cURL converters, JWT tools, cron helpers, CORS/CSP generators) and web, server & code (permissions, subnetting, fluid CSS, text utilities). Alongside them, our guides explain the concepts the tools automate — because a tool you understand is worth ten you don't.

Get in touch

Found a bug? Want a tool we don't have yet? Send us a message — feature requests genuinely shape what gets built next.