Developer Tools
Explore a growing collection of developer tools to streamline your workflow — build, test, convert, validate, and optimize across code, data, text, time, security, and more.
Featured Tools
RegexPlayer
An interactive regular expression testing tool with real-time pattern matching, explanation of regex patterns, and support for multiple regex flavors.
JSONPlayer
A powerful JSON viewer and formatter tool that helps developers visualize, validate, and format JSON data with syntax highlighting and collapsible tree structure.
DataGenie
A versatile mock data generator for developers and testers. Define your schema, choose output format, and instantly generate sample data in JSON, SQL, or C#. Perfect for testing APIs, databases, and applications without writing boilerplate.
CronGenius
Visual cron expression builder and interpreter. Build, test, and understand cron schedules with real-time feedback and next-run preview.
RegexVault
Browse and search a curated library of regex patterns for email validation, URL matching, phone numbers, and more. Open patterns directly in RegexPlay for testing.
PromptCrafter
Framework-driven prompt generator with optional AI refinement. Create professional prompts using RACE, ROSES, and more. Optional OpenRouter integration with graceful timeouts and Monaco editing.
Data Tools
JsonTransform
Fast, browser-based tool to transform JSON data into other common formats. Paste or upload JSON and instantly export to CSV or Excel, with optional flattening of nested objects and customizable delimiters.
UUIDForge
Generate unique identifiers instantly. Create UUIDs (v1/v4), NanoIDs, and custom pattern IDs for testing and development. Privacy-first, client-side generation.
YAMLift
Enterprise-grade YAML ↔ JSON converter with real-time bidirectional conversion. Perfect for DevOps, Kubernetes configs, and API workflows.
Security Tools
TokenPeek
TokenPeek is a privacy-first JWT inspection tool that lets you securely decode, validate, and analyze JSON Web Tokens (JWTs) — all directly within your browser. No data ever leaves your device. It provides clear, human-readable insights into token headers, payloads, and claims, complete with friendly timestamp formatting and detailed claim analysis to help you quickly understand token structure, expiration, and authenticity.
SecureForge
SecureForge is a privacy-first random password and encryption key generator for developers, sysadmins, and security-conscious users. It generates high-entropy passwords, encryption keys, and Wi-Fi credentials — all securely inside your browser using the Web Crypto API, ensuring no data ever leaves your device.
Comparison Tools
MergeLens
A powerful diff and merge viewer that lets you compare files side-by-side with syntax highlighting, inline change tracking, and an intuitive merge interface. Built entirely in the browser — fast, private, and developer-friendly.
Development Tools
TimeSage
The ultimate timestamp converter for developers. Convert Unix timestamps to human-readable dates and vice versa with real-time bidirectional conversion and timezone support.
Encoding Tools
EncodeLab
Privacy-first encoder/decoder supporting Base64, Base64 URL-safe, HTML Entity, and URL encoding. Real-time conversion with auto-detection and download capabilities.
Web Tools
CodePolish
Beautify, minify, and format code snippets across multiple languages. JavaScript, TypeScript, HTML, CSS, JSON, SQL, XML, YAML - all in your browser with 100% privacy.