FBA Label Generator (FNSKU)

How do I make Amazon FBA FNSKU labels for free?

Open AnyTool’s FBA Label Generator, paste the FNSKU you got from Amazon Seller Central, type the product title, pick the condition (New, Used - Like New, etc.) and a copy count. The tool encodes the FNSKU into a real, scannable Code 128 barcode and prints the title and condition under it — exactly the “barcode + title + condition” format Amazon requires. Switch to batch mode to paste FNSKU, Title, Condition, Qty rows and get one label per unit across many SKUs. Choose the Avery 5160 30-up sheet, the A4 21-up sheet, the 2×4 sheet, or a thermal label size, then download a print-ready PDF laid out at exact physical size. Everything is generated in your browser — your FNSKUs and titles are never uploaded.

Encodes your FNSKU as a real, scannable Code 128 barcode with the product title and condition underneath (Amazon’s required label format)
FNSKU validation — flags anything that isn’t a 10-character alphanumeric code (usually starting X0…) so you don’t invent one
Single unit × copies, or batch mode: paste FNSKU, Title, Condition, Qty rows for one label per unit across many SKUs
Avery 5160/8160 30-up (the FBA standard), A4 21-up, 2×4, or thermal sizes (2.25×1.25 in / 2×1 in) — all in Amazon’s 1×2 to 2×3 in range
100% client-side — FNSKUs, titles and conditions never leave your device; print-ready PDF built locally with pdf-lib

What is

An FBA label generator is a tool that turns an Amazon FNSKU (Fulfillment Network Stock Keeping Unit) into a printable FBA product label — a Code 128 barcode of the FNSKU plus the human-readable product title and item condition — and lays one label per unit on a printable sheet (Avery 30-up, A4 21-up or a thermal label size) as a print-ready PDF.

Generator

Related terms

FNSKUCode 128Amazon FBASeller CentralASINUPCConditionAvery 5160Thermal LabelManufacturer Barcode

Frequently Asked Questions

AnyTool’s FBA Label Generator is completely free with no account or watermark. Each FNSKU is encoded into a Code 128 barcode on a canvas with the jsbarcode library, and the label sheet is assembled into a PDF locally with pdf-lib, so your FNSKUs, product titles, conditions and SKUs never leave the browser. There is no server and no CDN, and the tool works offline once the page is cached.

Yes. It is free with no signup, and every FNSKU barcode and label PDF is generated in your browser — your FNSKUs, titles and conditions are never uploaded.

The FNSKU (Fulfillment Network Stock Keeping Unit) is a seller-specific 10-character code Amazon assigns to identify your exact inventory unit, and it is different from the ASIN (the listing) and the UPC/EAN (the retail product). You must obtain it from Amazon Seller Central — under Inventory, choose Manage Inventory or Print item labels — because it is unique to your SKU and its condition. This tool encodes the FNSKU you paste into a valid Code 128 barcode, but it does not create FNSKUs and you should never invent or guess one, or your units can be mis-received at the fulfillment center.

No — the FNSKU is assigned by Amazon. Get it from Seller Central (Inventory → Manage / Print item labels); it is unique to your SKU and its condition.

An FBA product label must show a scannable barcode (the FNSKU as Code 128), the FNSKU number, the product title and the condition (New, Used - Like New, etc.). Amazon accepts labels roughly from 1×2 in up to 2×3 in, printed in black on white, non-reflective, removable-adhesive material. This generator offers the Avery 5160/8160 30-up sheet (1×2-5/8 in, the de-facto FBA standard), an A4 21-up sheet, a 2×4 sheet for longer titles, and thermal sizes (2.25×1.25 in and 2×1 in) for a Zebra, Dymo or Rollo printer, and builds the PDF at exact physical size so labels print true to size.

A scannable Code 128 barcode of the FNSKU plus the title and condition, printed black-on-white between about 1×2 in and 2×3 in — the Avery 5160 30-up sheet is the common choice.

Apply one FNSKU label to every unit, on a flat surface away from box seams, lids, curves and edges, and cover any existing manufacturer barcode (UPC/EAN) so receiving scanners read only your FNSKU. Print at 100% / actual size (turn off “fit to page” and printer scaling) so the bar widths and quiet zone stay correct, use black on white non-reflective labels, avoid clear-tape glare over the bars, and verify a real scan with a scanner or phone before printing and shipping a whole batch. Always follow Amazon’s current FBA labeling and prep requirements, which change over time — from 2026, sellers are responsible for their own labeling in the US. This tool is not affiliated with Amazon.

One label per unit on a flat surface, covering any manufacturer barcode, printed at 100% with no tape glare — and verify a real scan before shipping the batch.

FBA Label Generator (FNSKU)

Generate Amazon FBA product labels in Amazon’s format — a Code 128 barcode of your FNSKU plus the product title and condition — with single or batch entry, lay one label per unit on Avery 30-up, A4, 2×4 or thermal sheets, and export a print-ready PDF — 100% in your browser, nothing uploaded.

Features

FNSKU → scannable Code 128 barcode with the product title and condition underneath (Amazon’s required label format), rendered locally with jsbarcode
FNSKU validation (10 alphanumeric, usually X0…) that flags codes that don’t look real so you use the one from Seller Central
Single unit × copies, or batch mode (paste FNSKU, Title, Condition, Qty rows) for one label per unit across many SKUs
Avery 5160/8160 30-up (FBA standard), A4 21-up, 2×4 sheet, and thermal sizes (2.25×1.25 in / 2×1 in), within Amazon’s 1×2 to 2×3 in range
100% client-side — FNSKUs, titles and conditions never leave your device; print-ready PDF built with pdf-lib at exact physical size

PriceFree

CategoryGenerator

PlatformAll (browser-based)

PrivacyFNSKUs, product titles, conditions and SKUs are encoded and laid out entirely in your browser — nothing is uploaded, logged or stored

Input: FNSKU + title + condition + copies, A pasted batch of FNSKU, Title, Condition, Qty rows, Sheet/size selection

Output: Print-ready PDF (label sheet, exact size), Printed page

Detailed Explanation

How It Works

In-Browser Amazon FBA FNSKU Label Generation

AnyTool’s FBA Label Generator builds Amazon FBA product labels in Amazon’s required format entirely in the browser. You provide the FNSKU (the Fulfillment Network Stock Keeping Unit Amazon assigns to your exact inventory unit), the product title and the item condition, and the tool encodes the FNSKU into a real, scannable Code 128 barcode with the jsbarcode library and prints the title and condition as the human-readable lines beneath it — the “scannable barcode + FNSKU number + title + condition” layout Amazon specifies. The FNSKU is distinct from the ASIN (which identifies the listing) and the UPC/EAN (which identifies the retail product); it must come from Seller Central, and the tool validates it (10 alphanumeric characters, usually starting X0…) and flags anything that does not look like a real FNSKU. The label sheet is assembled into a print-ready PDF locally with pdf-lib at exact physical size, so no FNSKU, title or condition is ever uploaded.

FNSKU encoded as Code 128 (the symbology Amazon uses for FNSKU labels), with product title + condition underneath
FNSKU validation: 10 alphanumeric characters, usually starting X0… (or a reused B0… ASIN) — non-FNSKU input is flagged, not invented
FNSKU is unique to your SKU + condition and is obtained from Amazon Seller Central, not generated by the tool
Rendered with jsbarcode; sheet PDF built with pdf-lib — all client-side, no server, no CDN
Distinct from ASIN (listing) and UPC/EAN (retail product); the FNSKU identifies your fulfillment unit

Methodology

Sheet Sizes, Batch and Print-Ready PDF

Amazon accepts FNSKU labels roughly from 1×2 in up to 2×3 in, printed black on white non-reflective material with removable adhesive. The generator ships the sizes sellers actually use: the Avery 5160/8160 30-up sheet (1×2-5/8 in, 3×10 — the de-facto FBA standard on US Letter), an A4 21-up sheet (63.5×38.1 mm, 3×7), a 2×4 sheet (10-up) for longer titles, and single-label thermal sizes (2.25×1.25 in and 2×1 in) for a Zebra, Dymo or Rollo label printer. Labels are produced one per unit either by entering a single unit with a copy count or by pasting a batch of “FNSKU, Title, Condition, Qty” rows (comma or tab separated). The PDF engine converts millimetres to PDF points (1 in = 72 pt) so labels print at true size, fills the grid left-to-right and top-to-bottom, paginates automatically, caches each FNSKU barcode image so repeated units are embedded once, truncates the title to fit the chosen label width, and can draw a faint cut outline as an alignment guide.

Avery 5160/8160 30-up (1×2-5/8 in) — the standard FBA label sheet on US Letter
A4 21-up (63.5×38.1 mm), 2×4 (10-up) for long titles, and thermal 2.25×1.25 in / 2×1 in for label printers
One label per unit: single unit × copies, or a pasted batch of FNSKU, Title, Condition, Qty rows
Millimetres converted to PDF points (1 in = 72 pt) so labels print at true physical size; grid auto-paginates
Title truncated to fit the label width; barcode images cached per FNSKU; optional faint cut outlines

Limitations

Honest Scope: Get the FNSKU from Seller Central, Apply & Verify

The tool generates valid FBA labels in Amazon’s format, but it states clearly what that does and does not cover. The FNSKU must be obtained from Amazon Seller Central (Inventory → Manage Inventory or Print item labels) because it is unique to your SKU and its condition — the tool does not create FNSKUs and you must not invent or guess one, or units can be mis-received. Apply one label per unit on a flat surface, away from box seams, lids, curves and edges, and cover any existing manufacturer barcode (UPC/EAN) so receiving scanners read only your FNSKU. Print at 100% / actual size with fit-to-page and printer scaling disabled, on black-on-white non-reflective removable-adhesive labels, keep the label flat with no clear-tape glare over the bars, and verify a real scan before shipping a whole batch. Follow Amazon’s current FBA labeling and prep requirements, which change over time — from 2026 sellers are responsible for their own labeling in the US. This tool is independent and not affiliated with Amazon.

FNSKU must come from Seller Central (Inventory → Manage / Print item labels) — it is unique to your SKU + condition; don’t invent one
One label per unit on a flat surface; cover any manufacturer UPC/EAN barcode so only the FNSKU scans
Print at 100% / actual size (disable fit-to-page and scaling), black on white non-reflective removable labels, no tape glare
Verify a real scan before shipping a batch; follow Amazon’s current FBA labeling/prep rules (seller-responsible from 2026 in the US)
Independent tool — not affiliated with Amazon

Privacy & Security

Privacy: Your FNSKUs and Titles Never Leave the Device

Because the entire tool runs client-side, your FNSKUs, product titles, conditions and SKUs are encoded and laid out only in the browser and are never uploaded, logged or stored on a server. The Code 128 barcodes (jsbarcode) and the label-sheet PDF (pdf-lib) are produced locally, so there is no server round-trip and no CDN, and the page works offline once cached, with no account, watermark or sign-up wall.

No upload of FNSKUs, product titles, conditions or SKUs
Barcode rendering and PDF generation happen entirely on your device
No account, no watermark, no sign-up wall
Works offline after first load

FBA FNSKU labels: in-browser (AnyTool) vs typical online label tools
Capability	AnyTool	Typical online tools
Processing	FNSKU barcode + label PDF built in your browser	Often server-side / account-based
Privacy	FNSKUs, titles & conditions never uploaded; offline-capable	Data usually sent to a server
Format	Code 128 FNSKU + title + condition (Amazon’s layout)	Sometimes barcode only, no condition line
FNSKU validation	Flags input that isn’t a real FNSKU (10 alphanumeric, X0…)	Often none
Batch	Paste FNSKU, Title, Condition, Qty → one label per unit	Frequently one label at a time
Sheet sizes	Avery 30-up, A4 21-up, 2×4, thermal — auto-paginated	Single image or one fixed size
Export	Print-ready PDF at exact size	Usually image-only
Cost / signup	Free, no signup, no watermark	Often gated, watermarked or paid
Honesty	States get-FNSKU-from-Seller-Central, cover UPC, print-100%, test-scan, not-affiliated	Rarely stated

AnyTool encodes the FNSKU you provide and builds the FBA label-sheet PDF locally in the browser and uploads nothing. Not affiliated with Amazon.

Cite This Page

Title: FBA Label Generator (turn an Amazon FNSKU into a print-ready FBA product label — a Code 128 barcode of the FNSKU plus the product title and item condition — single or batch, on Avery 30-up, A4, 2×4 or thermal sheets, entirely client-side)
Author: AnyTool
Published: January 1, 2026
Modified: February 8, 2026
Section: Generators
URL: https://www.anytool.tech/fba-label-generator

Formatted Citation

AnyTool. "FBA Label Generator (turn an Amazon FNSKU into a print-ready FBA product label — a Code 128 barcode of the FNSKU plus the product title and item condition — single or batch, on Avery 30-up, A4, 2×4 or thermal sheets, entirely client-side)." AnyTool, January 1, 2026. https://www.anytool.tech/fba-label-generator

A privacy-first, 100% client-side FBA Label Generator that turns an Amazon FNSKU into a print-ready Fulfillment-by-Amazon product label entirely in the browser with no upload, server, CDN or tracking. The label follows the format Amazon requires — a scannable Code 128 barcode of the FNSKU, the FNSKU number, the product title and the item condition (New, Used - Like New, Used - Very Good, Used - Good, Used - Acceptable, the Collectible grades, or Refurbished) — with the barcode rendered locally by the jsbarcode library and the title and condition drawn as the human-readable lines beneath it. The FNSKU (Fulfillment Network Stock Keeping Unit) is the seller-specific code Amazon assigns to identify a specific inventory unit and is distinct from the ASIN (which identifies the listing) and the UPC/EAN (which identifies the retail product); the tool validates the FNSKU as a 10-character alphanumeric code that usually starts with X0… (or reuses a B0… ASIN) and flags anything that does not look like a real FNSKU, while making explicit that the FNSKU is unique to the seller’s SKU and its condition and must be obtained from Amazon Seller Central (Inventory → Manage Inventory or Print item labels) rather than invented. Labels are produced one per unit two ways: a single unit with a copy count, or a pasted batch of comma- or tab-separated “FNSKU, Title, Condition, Qty” rows that expands to one label per unit across many SKUs, with rows lacking a usable FNSKU skipped and noted rather than aborting the run. A live canvas preview shows the single label exactly as it will print — FNSKU barcode, truncated title and condition — and a scaled mini-map visualises the chosen sheet grid with filled cells. For layout the tool offers the sizes FBA sellers use within Amazon’s accepted ~1×2 in to 2×3 in range: the Avery 5160/8160 30-up sheet (1×2-5/8 in, 3×10, the de-facto FBA standard on US Letter), an A4 21-up sheet (63.5×38.1 mm, 3×7), a 2×4 in 10-up sheet for longer titles, and single-label thermal sizes (2.25×1.25 in and 2×1 in) for Zebra, Dymo or Rollo label printers. The print-ready PDF is assembled in the browser with pdf-lib by converting millimetres to PDF points (1 in = 72 pt) so labels print at true physical size; the grid is filled left-to-right and top-to-bottom and paginated automatically, each FNSKU barcode image is embedded once and reused for repeated units, the title is truncated to fit the chosen label width, and an optional faint cut outline can be drawn as an alignment guide. The page is explicitly HONEST about prep: obtain the FNSKU from Seller Central and never invent one; apply one label per unit on a flat surface away from seams, lids and curves; cover any existing manufacturer barcode (UPC/EAN) so only the FNSKU scans; print at 100% / actual size with fit-to-page and printer scaling disabled, in black on white non-reflective removable-adhesive labels with no clear-tape glare over the bars; verify a real scan with a scanner or phone before shipping a whole batch; and follow Amazon’s current FBA labeling and prep requirements, which change over time (from 2026 sellers are responsible for their own labeling in the US). The tool is independent and not affiliated with Amazon. On privacy, every FNSKU, product title, condition and SKU is encoded and laid out only on the device — the Code 128 barcodes (jsbarcode) and the sheet PDF (pdf-lib) are produced locally with no upload, server, CDN or tracking — and the tool works offline once the page is cached, with no account, watermark or sign-up wall.