Marketing & SEO Calculators & Tools
Optimize meta tags, analyze keyword densities, and generate redirects. Built to run completely client-side in your browser for total privacy, zero data collection, and instant calculations.
Available Marketing & SEO Tools
UTM Link Builder
Generate tracking URLs with custom campaign UTM parameters, campaign presets, and instant QR code download.
Meta Tag Generator
Generate meta tags, Open Graph tags, and Twitter Cards with real-time Google and social preview mockups.
SERP Snippet Preview Tool
Preview how your page appears in Google search results on desktop and mobile. Checks pixel width clipping limits.
Email Subject Line Tester
Test your email subject lines for character limits, spam trigger words, and get alternative A/B testing suggestions.
Headline Analyzer
Analyze your headlines for Emotional Marketing Value (EMV) score, power words, sentiment, and length optimizations.
Robots.txt Generator
Generate custom robots.txt files with AI crawler blocks, crawl delays, disallow rules, and sitemap directives.
XML Sitemap Generator
Generate valid XML sitemaps for multi-URL lists with priority, change frequency, and lastmod controls.
Schema Markup Generator
Generate structured JSON-LD schema markup for Organization, Local Business, FAQ, Product, Article, Event, and more.
Open Graph Meta Generator
Generate Open Graph and Twitter Card meta tags with live visual previews for Facebook, X, LinkedIn, and Discord.
JSON to CSV Converter
Convert JSON arrays or objects into CSV format with custom delimiter choices, table previews, and client-side downloads.
Marketing & SEO Guides & Technical Comparisons
In-depth references, mathematical formulas, and technical comparisons related to marketing & seo calculations.
Schema Markup vs Meta Tags: Structured Data vs Social Previews
Understand the roles of JSON-LD schema vs HTML meta tags for SEO and rich snippets.
XML Sitemap vs HTML Sitemap: Crawling vs Navigation
When and why search engines require XML sitemaps alongside user-facing HTML sitemaps.
Explore Other Categories
Finance & Loans
Calculate mortgage payments, loan rates, self-employment taxes, and interest compound growths.
Real Estate & Mortgage
Determine affordability, refinance benefits, and rental property yields.
Everyday / Life Utility
Secure, local random password generators, instant age calculations, and QR codes.
Developer Tools
Formatters, encoders, regex testers, and color converters built for developers.
Text & Content
Word counters, text diff comparers, case text converters, and content clean utilities.
Health & Fitness
BMI calculators, caloric targets, macro splitters, and target heart rates.
Legal & Employment
Calculate payroll timelines, severance, overtime, and contract terms.
Education & Academics
GPA calculators, final grade planners, weighted grade solvers, and citation formatters.
Image & PDF Tools
Client-side image resizers, compressors, and PDF mergers. Fully private, no server uploads.
AI Tools
Token calculators, API pricing models, prompt formatters, and AI utility tools for LLM developers and creators.
Startup & SaaS
MRR/ARR calculators, burn rate estimators, SaaS valuation tools, and subscription metrics.