Free Developer &
Network Utility Tools
Professional-grade utilities for networking, development, and productivity. All processing is 100% client-side — your data never leaves your browser.
Networking & IT
IP Inspector & Guide
Real-time discovery of your public IPv4/IPv6, ISP metadata, and geographic location with deep insights into internet identity.
DNS Toolbox
Advanced DNS diagnostic suite supporting A, AAAA, MX, and TXT records with a global propagation visualizer and DNSSEC validation.
IP & IPv6 Calculator
Dual-stack subnetting engine for calculating CIDR boundaries and wildcard masks. Supports 128-bit IPv6 prefixes.
Subnet Conflict Checker
Detect CIDR overlaps and IP range collisions using bitwise masking logic. Essential for IPAM and clean VPC architecture.
Network Topology Designer
Professional-grade visual architecture tool for mapping cloud VPCs, local area networks, and data center facilities with drag-and-drop components.
Subnet Architecture Planner
Enterprise IP address management (IPAM) simulator for designing hierarchical site architectures and reserved IP assignments.
Email Spoofing Analyzer
Analyze domain email security (SPF, DMARC) to identify impersonation risks and understand why spam looks legitimate.
Security & Compliance
Multilingual EU GDPR and cybersecurity micro-training with certificate of completion.
Developer Suite
JSON to TypeScript
Developer productivity tool that transforms raw API responses into production-ready TypeScript models.
JWT Debugger
Privacy-focused security tool for decoding JSON Web Tokens locally in your browser. Analyzes claims and expiration metadata.
Base64 Encoder / Decoder
Encode and decode Base64 text with full UTF-8 support. Supports standard and URL-safe (RFC 4648 §5) variants. No data leaves your browser.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes via the browser's native Web Crypto API. Supports hex and Base64 output.
Password Generator
Cryptographically secure password generator using crypto.getRandomValues(). Customize length, character sets, and generate up to 20 passwords at once.
UUID Generator
Generate RFC 4122 UUID v4 (random) and UUID v7 (time-sortable) identifiers in bulk. Cryptographically secure, works entirely in your browser.
Cron Humanizer
DevOps utility that translates complex Unix cron expressions into natural language descriptions across multiple global locales.
SQL to JSON Schema
Database-to-API bridge that parses SQL CREATE TABLE statements into valid JSON Schema drafts.
Markdown Previewer
Professional technical writing studio with live side-by-side rendering and GitHub-flavored syntax highlighting.
Base Converter
High-precision numeric conversion suite supporting decimal, hexadecimal, and binary with 128-bit BigInt support.
Smart Timer
Industrial-strength timing suite designed for high-stakes exams and keynote presentations with zero-latency remote sync.
Professional Utilities
EU Salary Hub
Multi-country 2026 gross-to-net calculator with social benefits estimation (DE, FR, PL, CZ).
Simple Savings Goal
Financial architecture planner that visualizes wealth accumulation timelines with compounding interest and inflation adjustment.
Smart Grade Scaler
Advanced academic curve generator for international educators supporting US, French, and German grading systems.
Batch Unit Converter
High-volume data normalization tool for engineering datasets across mass, temperature, and data storage metrics.
Shuffle & Match
Fair-distribution engine utilizing the Fisher-Yates algorithm for team grouping and mapping assignments.
Built for Enterprise Secrecy
Infrastructure data is sensitive. Every InfraHub tool runs exclusively in your browser — no databases, no server logs, no leaks.
From the Blog
All articlesMastering Your 2026 German Take-Home Pay: A Professional Guide
Navigate the complexities of the 2026 German tax system, from rising social ceilings to precise Elterngeld and ALG1 estimations.
Free EU GDPR & Security Micro-Training with Certificate
Learn how to improve your organization's security posture and ensure GDPR compliance with our free, multilingual micro-training tool.
Why Am I Getting Spam Emails That Look Legit?
Discover why fake emails from 'PayPal' or 'Amazon' often bypass filters and how the mechanics of email spoofing work.
InfraHub in every tab.
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Access Password Generator, Base64, SHA-256, UUID, JSON Formatter, and JWT Decoder instantly from your browser toolbar. Everything runs locally — zero data sent anywhere.
Password
Cryptographically secure
Base64
Encode & decode
SHA-256
Web Crypto API
UUID v4/v7
RFC 4122
Frequently Asked Questions
What is InfraHub?
InfraHub is a free collection of 20+ professional-grade utility tools for developers, network engineers, and IT professionals. It includes tools for subnet calculation, DNS lookup, JWT debugging, JSON-to-TypeScript conversion, cron expression parsing, EU salary calculation, and more.
Are InfraHub tools really free?
Yes. All tools on InfraHub are completely free with no account required. There are no usage limits, no paywalls, and no premium tiers — ever.
Is my data safe when using InfraHub?
Yes. All processing happens entirely in your browser using JavaScript. No data is ever sent to our servers, stored in databases, or logged. InfraHub is GDPR compliant and safe for handling sensitive infrastructure data.
What categories of tools does InfraHub offer?
InfraHub offers three categories: Networking & IT (DNS lookup, subnet calculators, IP inspector, email security), Developer Suite (JSON to TypeScript, JWT debugger, cron humanizer, markdown previewer), and Professional Utilities (EU salary calculator, grade scaler, savings planner).
Who uses InfraHub?
InfraHub is used by software developers, network engineers, DevOps professionals, IT administrators, system architects, and students learning about infrastructure and development tools.
Does InfraHub require an account or login?
No account or login is required. All 20+ tools are instantly accessible without registration, email verification, or any personal information.