Image & Design Tools
Client-side design utilities, QR code creators, WCAG contrast checkers, and color converters.
Deliver accessible, visually compelling experiences with precision color math and rapid graphic assets generated in your browser.
Calculator Directory
Select any tool below to perform calculations with real-time feedback.
QR Code Generator & Designer
Generate custom QR codes for website URLs, contact vCards, WiFi networks, and plain text with PNG/SVG export.
WCAG Color Contrast Checker
Measure contrast ratios between foreground text and background colors with WCAG 2.1 AA and AAA compliance scores.
Hex to RGB & HSL Color Converter
Convert color codes between Hex, RGB, HSL, and CSS color representations with interactive live color preview.
Explore Other Departments
Discover our other verified calculation suites.
Financial & Business Calculators
Smart models for loans, investments, mortgages, taxes, and retirement planning.
Browse Finance & BusinessFitness & Health Calculators
Evidence-based body metrics, caloric targets, running paces, and pregnancy timelines.
Browse Health & FitnessMath & Scientific Calculators
Fast, verified mathematical engines for algebra, trigonometry, statistics, and fractions.
Browse MathDeveloper & Web Tools
Free web development utilities, formatters, encoders, timestamp converters, and hash generators.
Browse DeveloperText & Utility Tools
Fast text comparison, word counters, text case converters, and content drafting utilities.
Browse Text UtilityMarketing & SEO Tools
Search engine optimization tools, YouTube keyword tag builders, robots.txt builders, and schema generators.
Browse Marketing & SEOUtility & Conversion Calculators
Everyday utilities for time tracking, academics, construction, networking, and conversions.
Browse Utility & ConversionWordPress & Webmaster Tools
Webmaster tools, schema markup generators, robots.txt builders, and meta tag generators.
Browse WordPress Tools