Pair a display, body and code font from a curated Google Fonts list, see a live specimen at real modular-scale sizes, and copy the link tag and CSS.
Pack a folder of icons into one spritesheet with the CSS and the coordinates.
Build an SVG path from move, line, curve and arc commands and preview it live.
Click any swatch to copy its hex, with tints mixed toward white and shades toward black in sRGB.
Build a wedding budget by category, track what is paid, and see what is still owed.
Protein, fat and carb grams for a target calorie level, with real food weights.
Click tokens to assemble a regular expression and see a live match against your text.
A grid calculator with a real formula engine: =A1+B2*2, =SUM(A1:B3), 16 functions, and real error cells for #DIV/0!, #CIRCULAR! and #NAME? instead of hanging.
