Tools Managed by Marcus
All 64 tools maintained and reviewed by Marcus.
Advanced Anchor Text Analyzer & SEO Risk Auditor
Advanced CSS Grid Generator & Layout Architect
Advanced Paragraph Counter & Content Structure Auditor
AI-Adaptive Wealth & Retirement Engine
The ultimate 3,500+ word resource for retirement planning. longevity risk modeling, 3.3% safe withdrawal rates, FIRE 2.0 for the AI economy, and inflation-indexed wealth projections.
API Rate Limit Calculator
Border Radius Generator - Fancy 8-Point & Logical Properties
Breadcrumb Schema Generator
Capitalization Rate (Cap Rate) Property Valuation Calculator
Competitor Content Analyzer - Free SEO Content Gap & EEAT Tool
Content Gap Analyzer & SERP Dominance Engine
CSS Beautifier - Advanced Style Formatter & Unminifier
CSS Card Layout Generator
CSS Flexbox Generator Pro
The elite CSS Flexbox Generator. Visually design responsive layouts with real-time CSS and Tailwind output. Mastering flex-direction, justify-content, and align-items for.
Culinary Measurement & Density Converter
Email Signature Generator - Free Professional HTML Creator
Fluid Typography Intelligence Engine
The definitive typography scale generator for 2026. Calculate fluid font sizes using CSS clamp, REM units, and WCAG 2.2 accessibility standards. Professional design system auditor.
Game Development Budget & Burn-Rate Calculator
Git Command Helper Pro
High-Fidelity Visual Depth Engine
HTML Minifier & Web Performance Optimizer
Investment Return Calculator — Professional Wealth Engineering & ROI Hub
JSON Architect — Professional Data Structure & Code Beautifier
Keyword Density Checker & SEO Analyzer
Keyword Extractor - Semantic SEO & Entity Analyzer
Local SEO Citation Builder
Marketing Budget Calculator & Growth Architect
Multi-Language Code Minifier & Compressor
Net Worth Calculator & Financial Freedom Engine
Omniscient Retirement Wealth Oracle
Package.json Validator Pro
Validate your package.json against official NPM registry schemas. Fix syntax errors, validate SemVer, and optimize dependencies vs devDependencies for Production and Development.
PageSpeed Insights Analyzer Pro
Professional PageSpeed Insights Analyzer. Audit Core Web Vitals (LCP, INP, CLS) for Google ranking. Get actionable technical SEO fixes to boost website speed and conversion.
Paraphrasing Engine — Professional Content Rewriter
Pro JSON-LD Structured Data Schema Generator
Professional Appointment Scheduler & Capacity Calculator
Professional Aspect Ratio Finder & Cinematic Framing Optimizer
Professional Barcode Generator
Professional Canonical URL Generator
Professional Competitor Keyword & SERP Auditor
Professional CSS Minifier, Compressor & Code Optimizer
Professional JSON Formatter & Validator — Secure Data Architect
Professional Online API Tester & REST Debugger
Professional Savings Goal Calculator — Precision Wealth Engine
Professional Semantic SEO URL Slug Generator
Professional Signature Generator
Professional Video Bitrate & Codec Auditor
Professional Website Traffic Estimator & Growth Projection Architect
Professional Whitespace & Layout Density Auditor
Regex Tester
Robots.txt Validator & Googlebot Tester
Semantic Intelligence & Schema Markup Engine
SEO Content Length & Payload Optimizer — 2026 Ranking Architect
Ultimate HTML Entities Decoder | Online Recovery & Unescape Hub
Ultimate JSON to CSV Converter | Developer Data Hub
Ultimate Responsive Breakpoint Calculator & Viewport Hub
Ultimate Robots.txt Generator & Crawl Control Hub
Ultimate VW/VH & Fluid Typography Hub
The definitive 3,500+ word resource for responsive CSS units. Convert PX to VW/VH/DVH instantly. Generate fluid clamp() typography and solve mobile layout shifts.
Ultimate Workflow Bottleneck & Process Efficiency Engine
Universal API Architecture Auditor
URL Decoder — Professional Percent-Decoding & Web Recovery
URL Encoder — Professional Percent-Encoding & Link Architect
URL Encoder & Decoder Pro
The elite URL Encoder/Decoder. Safely transform strings into RFC 3986 compliant percent-encoded arrays. Securely decode malicious query parameters and API payloads.
UUID Generator
Word Frequency Counter & Semantic SEO Analyzer
XML Formatter & Beautifier
The definitive XML formatting tool. Beautify minified XML, validate syntax against W3C standards, and analyze structure with our AI-ready parsing engine.