About MicroTools

Small tools that do one job well — instantly, for free, and without ever seeing your data.

Developers, testers and writers reach for the same handful of utilities every day: format this JSON, generate a UUID, decode that Base64 string, check whether a card number is valid. Too often those tools are buried under sign-up walls, slow pages, or quietly send whatever you paste to a remote server.

MicroTools is our answer: a single fast page where every tool is one click away and runs entirely on your own device.

What we believe

• Privacy by design. Every tool runs in your browser. There is no backend that receives your input, so there is nothing for us to store, leak or sell.
• Zero friction. No accounts, no pop-ups asking for your email, no “upgrade to Pro”. Results update as you type and every output has a one-click copy button.
• Speed. The site is built with plain HTML and JavaScript, with no heavy frameworks, so it loads and responds instantly, even on slow connections.
• Free for everyone. MicroTools is supported by unobtrusive ads, which keeps every tool free to use. See our Privacy Policy for how advertising works on this site.

The tools

• Luhn Validator — check credit card and IMEI numbers as you type.
• Test Card Generator — Luhn-valid test card numbers for Visa, Mastercard, Amex, UnionPay and more.
• JSON Validator & Formatter — beautify, minify and pinpoint syntax errors by line and column.
• JSON to Dart Model Generator — null-safe Flutter models in plain, Equatable, json_serializable or freezed style.
• .env to Dart Config Generator — obfuscated config classes or a --dart-define-from-file setup.
• Assets to Dart Generator — drop your assets folder to get an assets.dart class and pubspec.yaml entries.
• Strong Password Generator — cryptographically secure passwords with a strength meter.
• RSA Key Pair Generator — PEM public/private keys; encrypt, decrypt, sign and verify messages.
• UUID Generator — RFC 4122 version 4 UUIDs, one or a thousand at a time.
• Lorem Ipsum Generator — placeholder text by paragraphs, sentences or words.
• Epoch Converter — Unix timestamps to readable dates and back.
• Base64 Encoder/Decoder — full UTF-8 support, including URL-safe mode.
• Base64 Image Viewer — preview Base64 or data URI images safely; the format is detected from the bytes.
• Case Converter — UPPERCASE, lowercase, Title Case, camelCase and Sentence case.

How you can verify our privacy claim

You don't have to take our word for it. Open your browser's developer tools, switch to the Network tab and use any tool: you'll see that typing into a tool sends no requests. The only network activity is the page itself loading, along with its styling and advertising scripts.

Contact us

Found a bug, have an idea for a new tool, or want to say hello? Email us at abqamar.dev@gmail.com. We read every message.