Developer Tools

Essential developer utilities for code formatting, API testing, regex validation, and more. Streamline your development workflow with powerful tools.

41 Tools Available 100% Client-Side Privacy-First

Common Use Cases

Format and beautify JSON, XML, and code

Test and debug regular expressions

Generate Lorem Ipsum placeholder text

Convert between different data formats

Validate and minify code

Key Benefits

Increased development speed
Reduced coding errors
Better code quality
Improved debugging efficiency
Streamlined workflows

All Developer Tools

JSON Formatter

Format, validate, and beautify your JSON data.

JSON Validator

Check if your JSON code is valid and find errors.

Regex Tester

Test your JS regular expressions with real-time highlighting.

HTML Minifier

Compress HTML code to reduce file size.

CSS Minifier

Minify CSS code for better performance.

UUID Generator

Generate Version 4 UUIDs (Universally Unique Identifiers) instantly.

Markdown Preview

Write Markdown and see the HTML result in real-time.

VAPT Scope Builder

Generate professional VAPT scope text for proposals.

Environment Variable Diff

Compare two .env files safely in your browser to find missing keys.

API Rate Limit Simulator

Simulate request bursts to visualize token bucket algorithms.

Regex Explainer

Translate complex regex patterns into plain English.

Log Redaction Preview

Paste logs to see what sensitive data (PII, Credits) gets masked.

CORS Policy Tester

Analyze CORS headers to understand cross-origin risks.

Webhook Payload Validator

Validate HMAC signatures for common webhooks (Stripe, GitHub).

API Abuse Scenarios

Generate test cases for API rate limiting and logic flaws.

Secure Coding Checklist

Generate a checklist for specific languages (Java, JS, Python).

Input Validation Regex

Generate regex and rules for input fields.

HTTP Status Explainer

Understand what specific status codes mean security-wise.

OAuth Flow Visualizer

Visualize standard OAuth 2.0 flows.

Secret Rotation Impact

Estimate downtime and steps for rotating secrets.

Dependency Risk Scanner

Parse package.json to find risky patterns.

Regex Playground

Interactive regex tester with syntax highlighting, explanations, and match visualization.

OpenAPI Spec Validator

Validate OpenAPI 3.0 and Swagger 2.0 specifications for errors.

SQL Query Formatter

Format and beautify SQL queries for better readability.

YAML JSON Converter

Convert between YAML and JSON formats with validation.

HTML Accessibility Checker

Check HTML for WCAG 2.1 accessibility issues and get remediation tips.

API Latency Simulator

Simulate API response delays for testing application behavior under latency.

Code Complexity Estimator

Calculate cyclomatic complexity and other code quality metrics.

Secure Coding Checklist

Generate secure coding checklists for JavaScript, Python, Java, and PHP.

Base64 File Encoder

Encode files to Base64 format entirely in your browser.

Diff Checker

Compare two text files and highlight differences line-by-line.

Timezone Converter for APIs

Convert timestamps between timezones for API development and testing.

UUID Bulk Generator

Generate hundreds of UUIDs at once for testing and development.

API Mock Data Generator

Generate realistic mock data for API testing (users, products, etc.).

Log Sanitizer Tool

Remove PII, credentials, and sensitive data from log files before sharing.

Cron Expression Builder

Visual cron expression builder with human-readable descriptions.

PHP Serializer

Convert JSON to PHP serialized strings and vice versa for debugging.

JSON to PHP Array

Convert JSON objects into modern PHP array syntax [].

XML to JSON Converter

Parse XML and convert it to clean JSON format.

Bcrypt Generator

Generate secure Bcrypt hashes with custom cost factors.

.htaccess Generator

Create .htaccess rules for HTTPS, redirects, and IP blocking.

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About Developer Tools

Our developer tools are designed with developers, designers, and digital professionals in mind. Each tool is built to be fast, secure, and easy to use, with a focus on privacy and client-side processing whenever possible. All tools are completely free to use with no registration required.

Whether you're working on a personal project or managing enterprise-level applications, our developer utilities provide the functionality you need without compromising on security or performance. Every tool is regularly updated and maintained to ensure compatibility with the latest web standards.