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How it works

How do you add an expiration date to an FNSKU label?

In two clicks. You enter the date in Amazon like always — FNSKU Label reads it off the Send to Amazon page and prints it onto a compliant, scannable label, sized exactly to your roll. Here's the whole flow.

▲ FNSKU Label in action — from the Send to Amazon page to a printed label.

The setup — once

Get going in about five minutes.

A one-time setup, then it's invisible — you just click a button on every shipment.

1

Install the extension

Add FNSKU Label to Chrome or Edge in one click from the Chrome Web Store — it's free to install; your Pro license unlocks it.

Chrome & Edge · Manifest V3 · works on Windows, macOS, Linux
2

Activate your license

Click the FNSKU Label toolbar icon to open Settings, paste the license key from your purchase email, and click Activate. One key works on up to 3 devices.

3

Turn on FNSKU & Condition in Amazon's Display preferences

This is the one Amazon setting that matters. On the Send to Amazon page, open Display preferences (under "SKU details") and tick FNSKU and Condition. That's how the extension reads them straight off the row — no API, no credentials.

Why it's required: FNSKU Label reads what's visible on the page. If FNSKU isn't shown, the Print button won't appear (and the extension will remind you). If Condition isn't shown, labels fall back to "New".
☑ FNSKU☑ Condition
4

Set your label size

In Settings, pick your label — DYMO 30334, Rollo, Zebra, 4×6, or a custom size — and save. The extension renders at that exact size, so you never touch the print dialog's Scale option.

Every shipment — two clicks

Then it's the same two clicks, forever.

1

Enter the expiration date in Amazon (like you do today)

Nothing changes about your normal workflow — you still type the Best By date into Amazon's field for each dated SKU.

2

Click "Print Label with Date"

The extension adds its button right next to Amazon's "Print SKU labels" link on each row. It reads the FNSKU, product title, condition, quantity, and date, then renders the labels and opens the print dialog automatically — with the Best By line already on them.

  • The button reads "Print Label" (no date) on rows without an expiration date.
  • It prints the exact quantity Amazon reports — plus any spares you've configured.
  • Each row has its own Scale % box for resizing the label on the spot — more on that below.
Small item? Shrink the label so it fits — and still scans.

Sachets, sample bottles, mini boxes — a full-size label wraps around the product or overhangs the edge, and a curled barcode won't scan at the warehouse. Type a percentage into the per-row Scale % box and the label shrinks to fit, perfectly centered, right before it prints — no wrestling the browser's print dialog on every SKU. Set a default for all labels under Settings → Content scale.

Printers

Works with the printers you already have.

The extension prints through your browser, so any thermal label printer works. In the print dialog, select your printer, set the paper size to match, and keep Scale at "Actual size (100%)".

DYMO

LabelWriter 450, 550, 4XL, 5XL and more. Presets for 30334, 30336, 30252, 30323.

Rollo

Any Rollo thermal printer — 2¼×1¼", 4×6", or a custom roll size.

Zebra

Zebra desktop label printers — set your label size and print.

One print-dialog rule: match the printer's paper size to the label size you chose in Settings, and keep Scale = "Actual size" (100%). The extension already sizes the page for you, so anything else just shifts the label. These settings stick after the first print.

That's the whole workflow.

Install, switch on two settings, and print dated FNSKU labels in two clicks. Setup takes two minutes.

Get Pro — $99/yr

support@fnskulabel.com  ·  fnskulabel.com