BlockPoster

Printgids

Best print settings for block posters

The settings that matter most when printing tiled PDF posters: exact scale, correct paper size, margins, orientation, and test pages.

Most block poster problems happen after the PDF is generated. The file can be correct, but the printer dialog may silently resize each page, rotate pages, or apply borderless scaling. That breaks the grid.

Use this checklist whenever tiles do not line up, the poster is smaller than expected, or page labels shift. The goal is to keep every PDF page at the same physical size that Block Poster created.

Before using paper and ink on the full project, print one representative page and check the scale, margins, colour, and sharpness at the distance where the poster will actually be viewed. A single test tile catches most mistakes early and makes the final assembly much easier.

Step-by-step workflow

  1. 1

    Open the PDF in a full PDF viewer

    Adobe Acrobat Reader, Preview on macOS, and the system print dialog are more predictable than printing from a browser preview. If the browser changes scaling, download the PDF and open it separately.

  2. 2

    Match the paper size exactly

    If you created the poster for A4, load A4 and select A4. If you created it for US Letter, select US Letter. Mixing A4 and Letter changes the printable area and the final poster size.

  3. 3

    Set scale to Actual Size or 100%

    This is the most important setting. Do not use Fit to Page, Shrink to printable area, or Scale to fit. Those settings resize each tile and make seams drift.

  4. 4

    Keep orientation stable

    Most PDF viewers can auto-rotate pages correctly, but some printer drivers rotate based on printable area. If a test tile rotates unexpectedly, choose portrait or landscape manually to match the PDF.

  5. 5

    Print one test page first

    Print tile row 1 column 1, check that labels, margins, and overlap appear as expected, then print the rest. A single test page saves paper and ink if the driver is scaling.

  6. 6

    Use consistent quality settings

    Use the same paper type and quality for every page. Changing from draft to high quality halfway through can shift colour, drying time, and sometimes paper feed.

Practical options

Choose the approach that matches your printer, paper, and final use.

Adobe Acrobat Reader

Choose Print, set Page Sizing to Actual size, confirm the paper size, and avoid driver options that resize pages.

Chrome or Edge PDF viewer

Use More settings and set Scale to 100. If the preview still shrinks pages, download the PDF and print from Acrobat or the system viewer.

macOS Preview

Open the PDF, choose Print, show details, and set Scale to 100%. Confirm the paper size under Page Setup before printing all pages.

Windows system dialog

Use printer properties to match paper size and disable driver-level scaling. Some drivers call this No scaling, Actual size, or 100%.

Tips for better results

  • If the poster is too small, a fit-to-page setting was probably enabled.
  • If rows line up at first but drift later, check that every sheet used the same paper size and orientation.
  • If the image is clipped, make sure the PDF was generated with enough margin for your printer.
  • If colours vary, disable economy mode and print all pages in one session.
  • If the printer pauses for a long time, the PDF may be large; wait rather than restarting the job.
  • If labels print outside the page, select the correct paper size in both the app and printer driver.
  • If borderless printing changes the size, turn it off and trim the finished poster instead.

Generate a print-ready PDF

Block Poster creates labelled PDF tiles with margins and overlap, so you only need to keep your print dialog at 100% scale.

Open Block Poster

Common questions

In most PDF viewers, yes. The label varies, but the goal is no scaling. The printed tile should match the PDF page size exactly.

No. Fit to Page changes the size of each tile to fit printer margins and usually breaks alignment.

Only if your printer applies it without scaling. Many borderless modes enlarge the page slightly, which makes the grid inaccurate.

Acrobat Reader and macOS Preview are usually reliable. Browser PDF viewers can work, but their scale controls are easier to miss.

Paper feed can vary slightly, especially on heavy paper. Use overlap, print at consistent quality, and align by the image rather than the physical edge.

Use high quality for wall art and normal quality for drafts or patterns. The scale setting matters more than quality for alignment.