Batch Wallet Generator

Creates keypairs in the browser and never transmits them anywhere — which also means nothing has stored them, so closing the tab without exporting loses them permanently. Generation runs in timed slices rather than one loop, because five hundred keys in a tight loop freezes the tab long enough to look like a crash. Vanity grinding is capped at six characters, since each extra one is sixteen times the work. Exports include an addresses-only option that is safe to paste anywhere. Keys are generated in the browser and never leave it — which also means nothing has stored them, so closing the tab without exporting loses them permanently and anything sent to those addresses is unrecoverable. Export before you navigate away. Addresses-only export is safe to paste anywhere.