Free, no signup. Updated October 2026
Free shipping label resizer: 8.5x11 to 4x6
Drop a label PDF and get 4x6 labels you can print.
Drop in a label PDF and get back labels that fit a 4x6 thermal printer. The resizer finds the label on each page, whether it’s a letter page from USPS, eBay or Etsy, an Amazon FBA box label paired with a UPS label, or a label with a packing slip. It crops from the original PDF so barcodes stay sharp, and it splits 30-up FNSKU sheets into single 2.25x1.25 labels. Files are processed in your browser and never uploaded.
Made for the label PDFs carriers and marketplaces give you
Carrier sites and marketplaces rarely hand you a clean thermal-printer file. The resizer sorts out the formats sellers deal with every day.
Split FBA + UPS pages
Got a letter-size page with an FBA box label and a UPS shipping label stacked on it? Split it into two clean 4×6 pages, each ready for a thermal printer.
Resize 30-up barcode sheets
Drop a 30-up FNSKU sheet and get back individual 2.25×1.25 barcode labels. Half-used sheet? The blank cells get skipped automatically.
Build Avery 5160 sheets
Have a stack of single-label PDFs? Pack them back onto letter-size Avery 5160 / 30-up sheets with no stretched or squished artwork.
Barcodes that still scan
No screenshots, no fuzzy re-rasterizing. The tool crops and re-embeds the real PDF, so barcodes stay crisp and scan on the first pass.
Supported label PDFs
Auto mode handles most files. Pick a mode yourself when you know exactly what you have.
| Your PDF | Mode | What you get |
|---|---|---|
| Letter or A4 page with one label (USPS, eBay, Etsy, Pirate Ship and similar) | Auto | One 4x6 label |
| Amazon FBA box label and UPS label on one page | Auto or FBA + UPS | Two 4x6 labels |
| Label and packing slip on one page | Auto | One 4x6 label; the packing slip is skipped |
| 4x6, 4x6.75, 4x8 or landscape 6x4 label pages | Auto | Upright 4x6 labels |
| Mixed page sizes in one file | Auto | Each page handled on its own |
| 30-up FNSKU sheet | 30-up | Single 2.25x1.25 labels; blank cells skipped. Need new FNSKU labels? Make them here |
| Single-label barcode PDFs | Avery 5160 | Packed onto Avery 5160 sheets |
How to print a 4x6 label from an 8.5x11 PDF
Once the label is 4x6, the print settings do the rest. Menus differ by printer, but the steps are the same.
- Convert your PDF here and download the 4x6 file.
- Open the download and choose Print.
- Pick your thermal printer and set the paper or label size to 4x6 inches in the print dialog or printer settings.
- Set the scale to 100% or Actual size, not Fit to page, then print.
Setting up a Zebra on a Mac? Follow our Zebra thermal printer setup guide. For more on label sizes, see how to print shipping labels and the best thermal label size for FBA.
How to resize your labels
Three steps, about a minute, no account. Everything happens in your browser, and your label PDFs never leave your computer.
Step 1
Pick your label type
Leave it on Auto, or choose FBA + UPS, 30-up, or Avery 5160 to match the PDF you have.
Step 2
Drop in your PDF
Drag your label file onto the tool, or click to browse. It's read right in your browser, and nothing is uploaded.
Step 3
Download print-ready labels
Get back clean 4x6 shipping labels or 2.25x1.25 barcode labels, sized for any thermal printer.
Rather not touch labels at all?
Let Simpl store, label, and ship your orders.
We receive, store, pick, label, and ship your ecommerce and Amazon orders out of our Austin, TX warehouse, so messy label PDFs stop being your problem.
Label resizer FAQs
- Is the label resizer free?
- Yes. It's free, with no Simpl account or signup. Use it as often as you need.
- Do my PDFs get uploaded anywhere?
- No. The resizing happens entirely inside your browser tab. Your label files never touch Simpl's servers or anyone else's.
- Which label formats does it handle?
- Letter and A4 pages with one label, letter pages that pair an Amazon FBA box label with a UPS label, a label with a packing slip, label-size pages of any size (4x6, 4x6.75, 4x8 and landscape 6x4), files that mix page sizes, 30-up FNSKU barcode sheets, and individual barcode-label PDFs. Output is standard 4x6 shipping labels, 2.25x1.25 barcode labels, or a packed Avery 5160 sheet.
- Will resizing blur my barcodes?
- No. Instead of screenshotting your labels, the tool crops and re-embeds the original PDF, so barcodes and text stay sharp enough to scan straight off a thermal printer.
- What size is a standard shipping label?
- 4x6 inches. It's the standard thermal shipping label size and what this tool outputs for shipping labels. FNSKU product labels are usually smaller, such as 2.25x1.25 inches.
- Can I resize a PDF that isn't a shipping label?
- The resizer looks for labels on each page. Blank areas and packing slips are skipped, and the status message says what it found and whether any content was not converted. Check the preview before you print.
- Does it work on a phone?
- Yes. It runs in a mobile browser. A larger screen makes it easier to check the preview before you print.
- Can Simpl handle my fulfillment and labeling?
- Yes. Simpl runs ecommerce fulfillment (receiving, storage, pick-and-pack, labeling, and shipping) plus Amazon FBA prep, all from our warehouse in Austin, TX.