Generation

Generate UUID v4, v7 and v1 plus ULID online. Batch generate, remove hyphens, uppercase output, using cryptographically secure randomness. Runs in your browser.

Generate strong random passwords and strings online. Choose length, character sets, avoid ambiguous chars, enforce every class, with an entropy strength meter. Runs in your browser.

Generate QR codes online for text, URLs, WiFi and vCard. Set error correction, size and colors, then export PNG or SVG. Runs entirely in your browser.

Decode QR codes online: upload, drag-and-drop or paste an image to extract the encoded text, with detected corner points. Runs entirely in your browser.

Free online IPv4 subnet calculator. Enter a CIDR to get the network and broadcast address, subnet mask, wildcard, usable host count and address class. Runs 100% in your browser.