About

Label Resizer exists because shipping labels are sensitive documents handled by clunky tooling. Carrier dashboards print Letter-size 2-up sheets that thermal printers hate, and online converters ask you to upload those labels — with your address and tracking barcodes — to somebody else’s server.

This tool takes the opposite position: everything runs locally in your browser. The PDF engine (pdf-lib) re-composes your labels into exact 4×6 pages without a single byte leaving your machine. It also splits the classic 2-up marketplace sheet and auto-rotates landscape labels — the two fixes sellers perform manually every day.

Free, no sign-up, and part of the shopifyai.xyz seller-tools family. Not affiliated with USPS, UPS, FedEx, Amazon, TikTok Shop or any marketplace.