A comprehensive collection of online development tools designed to boost your productivity. Format data, decode tokens, build cron expressions, and test regex patterns - all in your browser.

🔒 Local Processing💰 Completely Free⚡ No Registration

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JSON/CSV Formatter & Viewer

Format, validate, and convert JSON/CSV data. Generate TypeScript types and Zod schemas.

Key Features

✓Pretty/Minify JSON
✓JSON ↔ YAML ↔ CSV
✓TypeScript Generation
✓Validation & Diff

Try JSON/CSV Tool

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JWT Generator / Decoder

Generate, decode, and verify JWT tokens with multiple algorithms and JWKS support.

Key Features

✓HS256/384/512 Support
✓RS256, ES256
✓JWKS Verification
✓Claims Validation

Try JWT Tool

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Cron Expression Builder

Build and preview cron expressions with human-readable explanations.

Key Features

✓Linux/Quartz Format
✓Next 20 Runs Preview
✓Human Descriptions
✓Timezone Support

Try Cron Tool

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Encoding & Hashing Tools

Encode/decode and hash data using various algorithms and formats.

Key Features

✓URL/Base64 Encoding
✓MD5/SHA Hashing
✓HMAC Support
✓File Hash Calculation

Try Encoding Tool

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Regex Tester & Explainer

Test regular expressions with live matching and detailed explanations.

Key Features

✓Live Pattern Matching
✓Regex Explanation
✓Common Patterns
✓Group Capture Display

Try Regex Tool

Why Choose Our Dev Tools?

Built with developers in mind, focusing on privacy, performance, and productivity.

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Privacy First

All processing happens locally in your browser. Your sensitive data never leaves your device, ensuring complete privacy and security for your development work.

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Lightning Fast

Web Workers handle heavy processing without blocking your UI. Format large JSON files, hash big datasets, and test complex regex patterns smoothly.

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Developer Focused

Keyboard shortcuts, auto-save, syntax highlighting, and real-time validation. Every tool is designed to fit seamlessly into your development workflow.

Quick Access to Popular Tools

📄 Format JSON 🔐 Decode JWT 🔍 Test Regex 🔤 Encode/Hash