Free Tool · No Signup Required

Developer Toolkit

10 essential developer utilities in one place. JSON formatter, Base64 encoder, UUID generator, hash generator, and more. Everything runs in your browser.

10 Tools100% Client-Side0 Data Sent100% Free

How It Works

Start using any tool in seconds — no setup required.

Pick a Tool

Choose from 10 developer utilities using the tab bar

Paste or Type Input

Enter your data — JSON, Base64, JWT tokens, and more

Get Instant Results

See output in real time and copy to clipboard with one click

Frequently Asked Questions

Everything you need to know about the developer toolkit.

Is this developer toolkit really free?

Yes, completely free with no signup required. All 10 utilities are available instantly with no usage limits. We built this to help developers be more productive.

Is my data safe? Does anything get sent to a server?

All processing happens 100% in your browser using native Web APIs (TextEncoder, crypto.subtle, etc.). No data is ever sent to our servers or any third party. Your input never leaves your machine.

What tools are included in the developer toolkit?

The toolkit includes 10 utilities: JSON Formatter/Validator, Base64 Encoder/Decoder, UUID Generator, Hash Generator (MD5/SHA-1/SHA-256), Timestamp Converter, URL Encoder/Decoder, JWT Decoder, Color Converter (HEX/RGB/HSL), Regex Tester, and Lorem Ipsum Generator.

Does the Hash Generator support MD5?

The Hash Generator uses the Web Crypto API which supports SHA-1, SHA-256, and SHA-384/512. For MD5, we include a client-side implementation. Note that MD5 and SHA-1 are not recommended for security purposes — use SHA-256 or stronger for cryptographic needs.

Can I use these tools on mobile?

Yes. The toolkit is fully responsive and works on any device with a modern browser. The tab navigation is horizontally scrollable on mobile, and all tools adapt their layout for smaller screens.

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