Show HN: I built 17 free dev tools that work offline in the browser

Generate cohesive color palettes using harmony rules like complementary and triadic schemes.

colordesignpalette

Ensure color combinations meet WCAG accessibility standards with real-time compliance scoring.

accessibilitycolorWCAG

Visualize how designs appear to users with different types of color vision deficiency.

accessibilityvisiondesign

Convert between HEX, RGB, HSL, HSV, CMYK color formats with live preview capabilities.

colorconverterformat

Extract dominant colors and generate complete palettes from uploaded images.

imagecolorpalette

Format, validate, and beautify JSON data with syntax highlighting and error detection.

jsonformattervalidate

Create customizable QR codes with logos, colors, and multiple export formats.

qrcodegenerator

Design sophisticated box shadows with real-time preview and optimized CSS output.

cssbox-shadowdesign

Create stunning linear, radial, and conic gradients with intuitive color controls.

cssgradientdesign

Master CSS Flexbox layouts with interactive visual editor and generated code.

cssflexboxlayout

Transform CSV data into structured JSON with field mapping and validation.

csvjsonconvert

Text analysis with word count, reading time, and keyword density metrics.

wordcountertext

Compress JPEG, PNG, WebP images with quality controls and batch processing.

imagecompressoptimize

Visual CSS Grid layout builder with interactive controls and generated code.

cssgridlayout

Productivity timer with customizable work/break intervals and focus tracking.

productivitytimerfocus

CSS transition timing functions with interactive curves and code preview.

cssanimationeasing

Convert between image formats (PNG, JPEG, WebP, SVG) with quality settings.

imageconvertformat