Stored only in this browser's localStorage. They never leave the
page — all R2 operations run client-side. Get these from your
Cloudflare dashboard → R2 → Manage API Tokens.
Account ID
Access Key ID
Secret Access Key
Bucket name
Storage migration
Re-compresses colorMap entries that were uploaded before
deflate support landed. Reduces index.json bandwidth by
~75–90%.
Drop PNGs here or click to pick files
Transparent backgrounds work best. Anti-aliased edges get
cleaned automatically.