How to Print a 4x6 Label From Any PDF (Thermal or A4 Printer)

Printing a 4x6 label from a PDF comes down to two things: a file whose pages are actually label-sized, and a print dialog set to not "help" you. Get the file right by cropping the marketplace PDF first; get the dialog right with the settings below — one set for thermal printers, one for A4 — and the label prints full-size with a barcode that scans on the first beep.

Key Takeaways

Rule 1: crop first — Meesho/Flipkart PDFs must become label-sized files.
Thermal settings: paper 4x6 (100×150mm), scale 100%, orientation portrait.
A4 settings: actual size (never fit-to-page), then cut along the edge.
"Fit to page" is the barcode killer — it silently rescales everything.
Judge by the scanner: first-beep pickup scans mean the settings are right.

The Two Settings Tables

Setting	Thermal printer	A4 printer
Paper size	4x6 in / 100×150mm	A4
Scale	100% (never fit)	Actual size
Orientation	Portrait	As per file
After printing	Peel and paste	Cut along label edge
Darkness (thermal)	Raise until crisp	—

These settings only behave when the file is label-sized — which is what cropping does: Meesho cropper / Flipkart cropper, and the conversion logic in A4 to 4x6.

Why Fit-to-Page Ruins Labels

Fit-to-page rescales the PDF to the paper with margins — on a 4x6 roll that means shrinking whatever oversize the file carries, barcode included, often below the size scanners read reliably. With a cropped file at 100%, there's nothing to rescale: the page is the label, the label is the page. This single dialog choice is behind most of the label mistakes that stall pickups.

Printer-Specific Notes

Thermal: install the maker's driver so 4x6 appears as a real paper size, raise print darkness until barcodes come out crisp, and clean the head when prints fade on one side (full setup). A4 inkjet: actual size, cut with a blade against a ruler for straight edges, and paste flat — a wrinkled label scans as badly as a shrunken one. No printer? The shop workflow uses the same cropped file.

FAQs

What settings print a 4x6 label from a PDF?

Thermal: paper size 4x6, scale 100%. A4: actual size, then cut. Both require the PDF to be cropped to label size first.

Why does my 4x6 label print with huge margins or tiny text?

The file is still the full marketplace A4 page — crop the label out first, and print with fit-to-page OFF.

What does fit-to-page do to labels?

It rescales the page to fit the paper, shrinking the barcode below reliable scanning size — always print labels at 100%/actual size.

How do I know my label printed correctly?

The courier's scanner beeps on the first attempt — that's the only test that matters. If it takes retries, the print is too small or too light.