Base58 is Bitcoin's alphabet: it drops 0, O, I and l so a mistyped address is obvious. Unlike Base64 it has no padding, and the leading 1 in a Bitcoin address encodes leading zero bytes.
Unicode input is encoded as UTF-8 first, so emoji and accents round-trip correctly.
Entropy, crack-time estimates and weakness checks.
Strip unwanted newlines, optionally merge paragraphs.
Dedupe lines with case and whitespace options, keep order.
Collapse runs of spaces and tabs, trim each line.
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.
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.
