Generate UUIDs, QR codes, and various content
Generate unique identifiers (UUID/GUID) with customizable formats
Generate placeholder text with multiple styles and HTML format
Generate custom QR codes for text, URL, WiFi, vCard, email, SMS and more
Generate professional barcodes in Code128, EAN-13, UPC-A, Code39 and more formats
Build, validate and explain cron expressions with visual interface
Convert colors between HEX, RGB, HSL, CMYK, YCbCr, Lab formats, generate color palettes, and check WCAG contrast