Developer Tools for JSON, JWT, Base64, Regex, Hash & More

Run developer utilities directly in your browser — JSON editing, JWT decoding, Base64, regex testing, hashing, QR codes, timestamps and URL encoding. Nothing is uploaded.

JSON Editor

Developer Tools

Validate, format, repair, minify, compare, and convert JSON between CSV and YAML right in your browser.

QR Code Generator

Developer Tools

Create downloadable QR codes for URLs, text, Wi-Fi, WhatsApp, emails and phone numbers with logos.

Unix Timestamp Converter

Developer Tools

Convert Unix timestamps in seconds, milliseconds and microseconds to readable dates in any timezone.

JWT Decoder

Developer Tools

Decode JWT header and payload without leaving your browser. Your tokens are never uploaded.

Base64 Encoder / Decoder

Developer Tools

Encode text to Base64 or Base64URL and decode it back, or convert Base64 to Base64URL and vice versa.

Regex Tester

Developer Tools

Test JavaScript regex patterns with flags, explanations and a test string, plus find and replace.

Hash Generator

Developer Tools

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes locally with optional salt and uppercase output.

URL Encoder / Decoder

Developer Tools

Encode and decode URL components, full URIs and HTML entities locally in your browser.

How to Use the Developer Tools

1. Pick a tool

Choose the developer tool you need from the list, such as the JSON editor or QR code generator.

2. Paste or generate

Paste your data, token, or text, or configure the options of the tool.

3. Copy or download

Copy the output to your clipboard or download it as a file. Everything stays on your device.

JSON Editor

Validate, format, repair, minify, compare and convert JSON between CSV and YAML. Explore any document as a searchable tree and run JSONPath queries.

QR Code Generator

Create downloadable QR codes for URLs, text, Wi-Fi networks, WhatsApp, email and phone numbers, with optional logos and colors.

JWT Decoder

Decode JWT headers and payloads locally. Inspect claims, timestamps and algorithms without ever sending the token to a server.

Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes using the Web Crypto API, with optional salt and uppercase output.

Why Use RGBKit Developer Tools

Private by design

Your tokens, payloads and files stay on your device. Tools run locally in the browser without uploads.

No sign-up, no installs

Open the tool you need and get work done instantly. Nothing to download and no account required.

Fast for real work

Format JSON, compute hashes, decode JWT claims or test regex patterns with immediate feedback.

Built for developers

Common workflows are covered: JSONPath queries, Base64URL conversion, regex flags and multiple SHA algorithms.

Works on any device

Use the same tools on desktop or mobile. Great for quick checks while on-call or in meetings.

Copy and export

Copy results to your clipboard or download files when needed for debugging, docs or sharing.

FAQ: Frequently Asked Questions

Yes. RGBKit developer tools are free to use and do not require registration.

No. The tools are designed to run locally in your browser, so your data stays on your device.

You can, but always follow your organization's policies. The tools are built to keep data local, which helps reduce exposure.

Yes. The pages are responsive and work on phones, tablets and desktops.

No. Everything runs in the page and works in modern browsers.

Yes. Most tools support one-click copy, and some support downloading output for sharing in tickets or docs.