Free utilities

Tools

Calculators, converters and batch utilities for global shoppers and sellers — every tool runs in your browser, files never upload.

For shoppers

Landed-cost calculator Estimate landed cost by lane and category: freight, volumetric weight and applicable import taxes. Open tool → Plug types & voltage by country Plug types A–N, voltage and frequency for 240+ destinations, with an adapter/converter verdict. Open tool →

For sellers

Shipping label to 4×6 converter Crop A4/Letter shipping-label PDFs into 4×6-inch thermal labels — all in your browser, nothing uploads. Open tool → Batch barcode generator Paste a SKU list and generate printable CODE128/EAN-13/UPC product labels in one go, exportable to PDF. Open tool → Batch product image standardizer Batch-resize product photos to a uniform size on a clean background, rename and download as a ZIP. Open tool → SKU variant generator Combine a base SKU with option dimensions like color and size to mint every variant SKU, export to CSV. Open tool → Packing slip generator Enter the order number and item lines, get a clean A4 packing slip — print or save as PDF, nothing leaves the browser. Open tool →

Private by design

The file tools on this page — label conversion, barcodes, image standardizing — run entirely inside your browser. PDFs, images and SKU lists are processed on your device and never uploaded to our servers; you can even use them offline once the page has loaded.