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Developer Tools

30 Digital Utilities

JSON formatter, validator, JWT debugger, UUID generator, base64/URL encoders, and Web Crypto hash calculators. Private, secure processing with zero permanent file storage.

Subcategories:

Developer Tools

30 Tools Private & Secure Zero Permanent Retention

Essential engineering utilities for software engineers and web developers. Format JSON, debug JWT tokens, encode URL strings, and compute cryptographic hashes locally.

All Utilities
30 Tools
Security, Hashes & Generators
19

UUID v4 Generator

generator

Generate cryptographically secure random UUID Version-4 identifiers in bulk.

Cryptographic Hash Generator

generator

Generate SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes from text strings or files.

Unix Timestamp & Epoch Converter

converter

Convert Unix epoch timestamps (seconds and milliseconds) to human-readable dates and vice versa.

RegEx Tester & Match Highlighter

tester

Test regular expressions in real-time with syntax error detection, group capture breakdown, and match highlighting.

XML to JSON & JSON to XML Converter

converter

Bidirectionally convert data structures between XML documents and JSON objects.

Cron Expression Generator & Human Parser

generator

Generate and decode standard 5-part cron expressions with human-readable English explanations.

YAML to JSON & JSON to YAML Converter

converter

Convert configuration files seamlessly between YAML and JSON formats.

Strong Password Generator

security

Generate cryptographically secure random passwords, memorable passphrases, and numeric PINs with entropy measurement.

cURL to Fetch & Code Converter

converter

Convert cURL command-line requests into JavaScript fetch(), Axios, Python requests, and Go net/http code.

Regex Explainer & Interactive Pattern Tester

tester

Test regular expressions with real-time capture group visualization and plain-English pattern token breakdown.

JWT Inspector & Claims Security Analyzer

security

Decode and inspect JSON Web Tokens (JWT) with claim validation, expiration timeline, and security vulnerability analysis.

Cron Expression Generator & Human Explainer

automation

Build, debug, and translate standard 5-part cron schedule expressions into plain English descriptions.

JSON to XML Converter & Formatter

data

Convert structured JSON payloads to clean, indented, and well-formed XML documents with customizable root tags.

JSON to YAML Converter & Beautifier

data

Convert complex JSON configurations into clean, human-readable YAML for Docker Compose, Kubernetes, and CI/CD pipelines.

UUID v5 Generator (Deterministic SHA-1 Namespaces)

security

Generate deterministic, reproducible RFC 4122 UUID version 5 identifiers from DNS, URL, OID, or custom namespaces.

JSON to TypeScript Interface & Type Generator

code-generation

Generate strongly-typed TypeScript interfaces and type definitions from JSON data.

JSON Schema (Draft-07) Auto-Generator

code-generation

Generate standards-compliant JSON Schema (Draft-07) definitions from sample JSON data.

SQL CREATE TABLE to TypeScript Interface Converter

code-generation

Generate TypeScript type definitions and interfaces from SQL DDL CREATE TABLE statements.

Developer JSON Toolkit & Data Transformation Suite

workflows

All-in-one developer workspace to format, validate, minify, diff, and generate TypeScript from JSON.

Frequently Asked Questions

Is it safe to paste private API keys or JWT tokens?

Yes. All parsing and cryptographic hash calculations use the browser Web Crypto API and client-side JavaScript. Nothing is sent to our servers.

Does the JSON Formatter validate syntax errors?

Yes. The tool pinpoints exact line numbers, character positions, and mismatched brackets with syntax error highlighting.

Can I generate UUIDs offline?

Yes. Version 4 UUID generation uses standard cryptographically strong random values from crypto.getRandomValues().