Printout starts at the middle of the page

[vrapp]

I have this pdf file

XPO_Label.pdf

that has page size 8.5x11. I need to print it on a label 4x6, the printer is Zebra. When I print it using SumatraPDF with the option to shrink or fit, the upper half is empty - see the picture.

From Adobe Reader it's printed from the top of the page, as expected.

[GitHubRulesOK]

Hmm I can help but beware my opinion is you should NEVER use PDF (unless through their own PDF Direct) nor SumatraPDF for Zebras as they have their own system of TEXT and IMAGES printing THUS their SDK ensures a barcode is pixel perfect.

Windows Image Printing (Which is what SumatraPDF ONLY uses) will produce this type of monochrome output for a 200 DPI device

Firstly, to NOT change scale ensure the settings file has

PrinterDefaults [
	PrintScale = none
]

But that only assists to make the size correct not the positioning which is controlled by Windows in WinPrint.

To ensure it is then printed as 4X6 the content must be 4x6 and in the correct place and media size since on this device windows will only use the default driver settings whatever those may be

It would be easier to set a page to 6x4 using Windows own forms and printers that can be edited in the system

this uses XPS printing so not perfect but slightly better

[vrapp]

Thanks for the reply. The way I use it is for the shipping application that downloads the label from the carrier's cloud service and sends it to the printer by calling Sumatra command line. This PDF file is what they give, and according to them "Yeah, if you save the document, by default it will save as the 8.5 x 11, however if printing on a Zebra Printer, it should automatically scale to the correct 4x6 format." - which it does if I manually print from Adobe Reader; but when I print it by Sumatra using command line,  it prints like on my picture.
If in command line I specify "noscale", then naturally it's not scaled down and the label has only part of the whole thing.

[GitHubRulesOK]

the shipper should know better than to supply a PDF without checking your using "Zebra PDF Direct" software as that is what Zebra [Designer]/Designed as their way of using PDFs
Otherwise you should be using much more compatible higher speed ZPL (which is a text format with bitmaps) and does not need scaling or the raster misaligned shenanigans PDF causes with raster mono printers.

SO in such cases do not expect Windows Image Printing (the one SumatraPDF uses) to produce good reading barcodes it simply is mismatched ratios and colour profiles thus cannot.

to send an image to the Zebra via its print driver you nominate the printer's name but that is only part of the routing the other is the media size such as that printer MUST have a suitable "Windows Form" in the system it is running on.

So, the form(at) is in print management and if already set has a "Paperkind Number" the best way to test is using one of 3 methods. And the newest in Pre-Release is CTRL + K List Printers

I dont have a Zebra driver active so nearest similar is mono fax device and it shows LOTS of data some of which I will skip

Default printer: "Fax"
Printer: "Fax"
  port: SHRFAX:
  driver: Microsoft Shared Fax Driver
  print processor: winprint
  datatype: RAW
  queued jobs: 0
  status: 0
    READY
  attributes: 0x4040
    LOCAL
    FAX
  devmode defaults:
    orientation: portrait
    paper size id: 1
    print quality: 200 dpi
    y resolution: 200 dpi
    color: monochrome
    duplex: simplex
  bin 0: 'Default' (1)
  paper sizes:
    'Letter' (id 1, 215.9 x 279.4 mm)
    'Letter Small' (id 2, 215.9 x 279.4 mm)
.... lots of OTHER SIZES
    'PRC Envelope #4 Rotated' (id 112, 208.0 x 110.0 mm)
    '6x4' (id 119, 152.4 x 101.6 mm)
  custom paper size range: 0.0 x 0.0 mm to 216.0 x 355.6 mm
  duplex: no
  color: no
  max copies: 1
  collation: no
  landscape rotation: 90 degrees
  resolutions: 200x200 200x100

So the target is 119 or 6x4 as the Paperkind and depending on other of those values you may need to overcome that AutoRotate to 90 but try with fit first

Sumatrapdf -print-to "your zebra Blah" -print-settings "monochrome,fit,paper=6x4" filename
OR in my case that 6x4 is custom 119 and does not always behave as expected due to the roll media which is another reason for NOT using PDF fixed pages.
Sumatrapdf -print-to "your zebra Blah" -print-settings "monochrome,fit,paperkind=119" filename

[vrapp]

Thanks! I defined stock 4x6, and command Sumatrapdf -print-to "your zebra Blah" -print-settings "monochrome,fit,paper=4x6" filename finally printed it correctly.