The All-in-One Developer Toolkit

UtilityKit provides high-performance, privacy-focused tools for developers. Everything runs in your browser—no server uploads, no installs.

SQL Formatter

Format, validate, and optimize SQL queries for multiple dialects.

Visual SQL Builder

Construct complex relational queries visually without writing raw code.

REST API Builder

Construct, test, and analyze HTTP requests directly in-browser.

Unit Test Gen

Generate unit test templates, mocks, and scenarios from source code.

Regex Tester

Build, test, and debug regular expressions visually.

Diff Checker

Compare code blocks or text files to find differences.

Formatter & Validator

Beautify JSON, XML, HTML and validate syntax errors.

JSON Mock Data

Generate massive, schema-driven realistic JSON datasets for testing.

Load Test Sim

Simulate high-concurrency traffic patterns to stress test APIs.

API Test Generator

Auto-generate comprehensive test scenarios and automation scripts from OpenAPI.

Coverage Visualizer

Visualize test coverage reports (LCOV, Cobertura) and identify risks.

Cron Generator

Visually create cron schedule expressions for your automated jobs.

Pipeline Visualizer

Visualize and optimize CI/CD workflows for GitHub & GitLab.

Log Analyzer

Parse logs to detect errors, security risks, and performance issues.

Stack Trace Analyzer

Debug stack traces, identify root causes, and filter dependencies.

ER Diagram Gen

Generate Entity-Relationship diagrams from SQL schemas automatically.

NoSQL Query Gen

Generate queries for MongoDB, Cassandra, Redis & Neo4j visually.

DB Migration Script

Generate schema & data migration scripts with risk analysis.

JWT Decoder

Decode, verify signatures, and inspect JWT claims securely.

Password Generator

Create secure, random passwords or mnemonic hint-based secrets.

Code Security Scan

Static analysis to find bugs, security risks, and complexity issues.

Metadata Extractor

Extract file metadata, check hashes, and detect forensic risks.

Gradient Generator

Design CSS gradients with cross-browser code generation.

Tailwind Builder

Construct and validate Tailwind utility classes visually.

Color Palette

Generate accessible, harmonious color scales for design systems.

Responsive Preview

Simulate viewports and test responsive layouts on multiple devices.

Encoder / Decoder

Convert text between Base64, URL, HTML Entity, and JSON formats.

Timezone Converter

Convert dates between timezones with DST and overlap detection.

Image to Base64

Convert images to Base64 strings for embedding in HTML/CSS.

Encoding Detector

Detect character sets, BOMs, and binary patterns in files.

Why Developers Choose UtilityKit

Privacy First

Your data never leaves your browser. We process everything locally using modern web technologies, ensuring your sensitive code and data remain private.

Blazing Fast

Built with React and Vite for instant load times. No server round-trips means zero latency when formatting code or generating data.

Developer Focused

Clean, distraction-free UI with dark mode support. Designed by engineers for engineers to boost productivity without the clutter.

How UtilityKit Works

1

Select a Tool

Browse our extensive collection of developer utilities, categorized for easy access. From SQL formatters to Cron generators, we have it all.

2

Enter Your Data

Paste your code, text, or configuration into the tool. Our intuitive interfaces make it easy to input complex data structures.

3

Get Instant Results

See the output immediately. Copy formatted code, generated data, or validation results with a single click.

// Example: Local Processing
const processData = (input) => {
  // Your data stays here
  return transform(input);
};

// No server calls
// No API latency
// 100% Secure

Frequently Asked Questions

Is my data safe?

Yes! UtilityKit runs entirely in your browser. We do not store or transmit your input data to any server. Your code and secrets never leave your device.

Is it free to use?

Absolutely. UtilityKit is free for everyone. We believe essential developer tools should be accessible without paywalls.

Do you have an API?

Currently, we focus on client-side browser tools. However, we are exploring API options for the future.

Can I contribute?

Yes! We welcome suggestions and bug reports. Feel free to reach out via email or GitHub.