How to use it
- Drop the label PDF. It stays on your computer: nothing is uploaded to a server.
- Choose the area: half or quarter of the page, or draw a frame on the preview. Trim to printed edges removes the white space around the label.
- Choose your label size. Automatic rotation turns a landscape label to fill a portrait label.
- Download the PDF and print it at 100 % (no “fit to page”), with the label size set in the printer driver.
Why the result stays sharp
The label is not turned into a picture. The vector content of the original PDF is reused, cropped and scaled, so barcode bars keep clean edges at any printer resolution (203 or 300 dpi).
Scaling and barcode readability
A label laid out for half an A4 page is often larger than 4x6" and has to be reduced. A small reduction is usually fine, but the more a barcode shrinks, the thinner its bars get. The tool shows the scale and warns above a 10 % reduction. If your courier offers a thermal (4x6 or 100 × 150) format in its account settings, that is always the better option.
Which size?
- 4 × 6″ (101.6 × 152.4 mm): the standard shipping label on most thermal printers sold in the UK and US.
- 100 × 150 mm: the metric equivalent, common across Europe. The difference from 4x6 is under 2.5 mm.
- 103 × 199 mm: the thermal format of DHL Paket labels.
The guide 4x6, 6x4 or 100 × 150 explains the naming, and the printer compatibility checker confirms your printer takes the width.
If the print is offset or cut off
Check that the label size in the driver matches the roll, then run the printer’s calibration (gap detection). The troubleshooting page covers the common cases.