Paste the OPTIONS request and the response headers of a CORS preflight and walk every rule the browser applies, in order, each with a pass or fail and the reason - including the wildcard origin with credentials that is invalid no matter what else the response says.
Generate QR codes for links, text or Wi-Fi.
Your public IP, user agent and screen facts.
Open Graph and Twitter card tags from a form.
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.
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.
