Printing cropped labels on 4 × 6 and 3 × 5 thermal stock

31 August 2026 · 6 min read · Guide

A thermal printer wants a fixed page the size of its roll. A cropped label is whatever size the label happened to be. Reconciling those two is what the page-size setting does — here is which choice to make.

The three page-size choices

The setting lives in Settings, saved separately for each marketplace, and has three values.

Crop — the label’s own size

Each page comes out exactly the size of its cropped label. Nothing is scaled, so the barcode and the caption print at their original size and nothing is wasted. The trade-off is that every page is a different size, which suits a normal A4 or Letter printer set to “actual size” far better than it suits a thermal roll.

4 × 6in — the usual thermal roll

288 × 432 points. The label is scaled to fit and centred, so every page is identical and the printer never has to think.

3 × 5in — the smaller roll

216 × 360 points. Worth knowing about because a cropped Flipkart label all but fills it exactly.

What each does to a Flipkart label

A cropped Flipkart label is roughly 3 × 4.7in — about 216pt wide. That makes it the easy case:

• On 3 × 5in it prints close to 1:1, with barely any margin. This is the best match available.
• On 4 × 6in it lands at about 108% — it fills the stock without shrinking, which is the right direction to be wrong in.

Either way a Flipkart label needs no caption compensation, because it is never scaled down.

What each does to a Meesho label

A cropped Meesho label is roughly 8in wide, so it is much larger than either roll and has to come down to fit:

• On 4 × 6in it scales to about 50%.
• On 3 × 5in it scales to about 37%.

Raising the caption to compensate

Caption size is a percentage of the base, set per marketplace, so the fix is direct: if the label is going onto 4 × 6 at 50%, roughly double the caption percentage to land back where you started. On 3 × 5 at 37%, closer to triple it.

Two things make this less fiddly than it sounds. The preview draws the caption with the same geometry the exporter uses, so what you see is what prints — the layout lives in one place and each renderer only supplies a way to measure text. And the setting is remembered per marketplace, so this is a one-time adjustment, not something to redo every batch.

There is a floor: below about 6pt the caption stops being legible, so text is trimmed rather than shrunk past it. If you are hitting that, the label is being scaled too far for the amount of text — a larger roll is the real fix.

Which should you choose?

• Thermal printer, Flipkart labels: 3 × 5in if you have that roll, otherwise 4 × 6in. No caption change needed.
• Thermal printer, Meesho labels: 4 × 6in, and roughly double the caption percentage.
• Ordinary A4 or Letter printer: Crop, printed at actual size. You keep full resolution and the caption needs no adjustment.

A note on paper printers

If you are printing to A4, make sure the print dialog is set to actual size rather than “fit to page” — fit-to-page will scale a small cropped label back up to fill the sheet, undoing the point of cropping it. Several cropped labels per sheet, printed at actual size, is the paper-efficient way to do this.

For the rest of the settings, see every LabelCropper feature explained.

Troubleshooting a thermal print

The label prints tiny in one corner

The printer driver is being handed a page size it does not match. Check that the driver’s stock size is the same roll you chose here — a 4 × 6 page sent to a driver set to A4 gets placed at its true size on a sheet four times larger. Set the driver to the roll, and the print dialog to actual size.

The barcode is cut off at one edge

Almost always the printer’s own unprintable margin rather than the crop. LabelCropper centres the label on the stock precisely because printer margins are rarely symmetric, so if an edge is still clipped the roll is likely misaligned in the feed, or the driver is set to a slightly larger stock than is loaded.

The barcode scans on screen but not on paper

That is a resolution problem, not a cropping one. Scaling a Meesho label to 37% puts the barcode’s narrowest bars near the limit of what a 203 dpi thermal head can resolve. Move up to 4 × 6 stock, which prints the same label at about 50%, or use the Crop page size on a paper printer.

The caption is readable on screen but not from the bench

Raise the caption percentage for that marketplace and reprint one page to check. The preview is drawn with the same geometry the exporter uses, so a caption that looks right in the preview will be the size that prints.

Some labels come out sideways

That is deliberate, and only happens when turning buys real size. Onto fixed stock the label is tried both ways up and the larger result kept — but only when turning wins by a clear margin, because a sideways label has to be picked up and rotated to read. A cropped Meesho label gains 53% against 50% by turning, which is not worth it; a genuinely portrait label on landscape stock gains far more, and is.

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