Developer & Design Tools
Handy utilities for developers, designers and marketers: QR codes, colours, CSS generators, encoders and data converters. Nothing is sent to a server.
QR Code Generator
Free QR codes for links, Wi-Fi, text and contacts.
Color Picker & Palette
HEX, RGB and HSL codes plus matching palettes.
Contrast Checker
Check WCAG AA/AAA colour contrast for text.
Base64 Encoder / Decoder
Encode or decode Base64 text (UTF-8 safe).
URL Encoder / Decoder
Percent-encode or decode URLs and query strings.
Binary / Hex Converter
Convert between binary, octal, decimal and hex.
CSS Gradient Generator
Linear, radial and conic gradients with CSS code.
Box Shadow Generator
Design CSS box-shadow visually and copy the code.
HTML Entity Encoder
Escape or unescape HTML special characters.
Image to Base64
Convert an image to a Base64 data URI and back.
PX to REM Converter
Convert pixels to rem and rem to pixels.
Markdown to HTML
Convert Markdown to clean HTML with live preview.
CSV to JSON
Convert CSV or spreadsheet data to JSON.
JSON to CSV
Convert a JSON array to CSV for Excel or Sheets.
SVG Optimizer
Minify SVG files by removing editor junk.
By Shah Rukh, software developer · Last updated:
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