Duplex, Margins, and Scaling: Why Your Printed Page Doesn’t Match the Preview

31 Jul 2026

You check the print preview, everything looks perfectly aligned, and then the page comes out wrong.

The text may be too small, the right-hand edge could be missing, a table might spill onto a second page, or a double-sided document may flip along the wrong edge. Sometimes the printed version is shifted slightly even though the preview appears centred.

These problems are usually caused by a mismatch between the document, application, printer driver, paper size, margins, and scaling settings.

The preview only shows how the software expects the page to print. The physical result still depends on how the printer interprets those instructions.

Why Print Preview Is Not Always Exact

Print preview is a useful guide, but it is not a photograph of the final printed page.

The application creates the preview using information such as:

The selected printer
Paper size
Page orientation
Document margins
Printer driver capabilities
Scaling options
Duplex settings
Printable area
Font and layout information

If any of these change between previewing and printing, the output may look different.

A document can also preview correctly for one printer and print incorrectly on another because different printers have different non-printable areas and driver behaviour.

Start by Selecting the Correct Printer

Many printing problems begin because the wrong device is selected.

The print window may default to:

Microsoft Print to PDF
An old office printer
A printer installed twice
A remote desktop printer
A printer on another floor
A generic Windows driver
A different model with different paper settings

Before changing the document, confirm the exact printer name.

This matters because the selected printer determines which paper sizes, margins, duplex options, trays, and scaling choices are available.

Check the Paper Size

A document designed for one paper size may be scaled or cropped when printed on another.

In the UK, most office documents use A4. However, some applications, templates, and imported files may be configured for Letter.

A4 measures 210 × 297 mm, while Letter uses different dimensions. The difference is enough to cause:

Text shifting
Extra page breaks
Cropped footers
Tables moving
Margins changing
The final page printing mostly blank

Check the paper size in three places:

The document or page-layout settings
The application’s print window
The printer’s properties or preferences

All three should agree.

Check the Paper Loaded in the Printer

The software may be set to A4 while the printer believes Letter or another size is loaded.

This can trigger:

Automatic scaling
Paper-size mismatch warnings
Jobs being held at the printer
Printing from the wrong tray
Cropped content
Unexpected borders

Check the printer’s control panel and confirm that the tray is configured for the correct paper size and type.

Some printers require you to confirm the paper size whenever a tray is opened or refilled.

What Scaling Does

Scaling changes the size of the document to make it fit the available paper area.

Common options include:

Actual size
100%
Fit to page
Shrink oversized pages
Custom scale
Fill page
Fit printable area
Multiple pages per sheet

These options sound similar but can produce very different results.

Actual Size or 100%

This prints the document at its original dimensions.

It is usually the right choice for:

Labels
Templates
Forms
Technical drawings
Artwork requiring exact measurements
Pre-printed stationery

However, content near the edge may be cropped if it extends beyond the printer’s printable area.

Fit to Page

This reduces or enlarges the document so that everything fits within the paper.

It can prevent cropping, but it may also:

Make text smaller
Change the apparent margin size
Reduce image quality
Alter the scale of diagrams
Affect alignment with pre-printed forms

Shrink Oversized Pages

This reduces only pages that are too large.

Pages already within the printable area may remain at their original size.

This is often preferable to automatically enlarging smaller pages.

Fill Page

This enlarges the content until the paper is filled.

Part of the document may be cropped because the application prioritises covering the page rather than preserving every edge.

Avoid Applying Scaling Twice

Scaling can be enabled in both the application and printer driver.

For example:

The PDF reader is set to Fit
The printer driver is also set to Scale to A4

This can reduce the document twice and create unusually large margins.

The opposite can also happen, with one layer enlarging a page that another layer has already adjusted.

Use one scaling method at a time. In most cases, leave the printer driver at its default and control scaling from the application.

Why the Margins Change

Most printers cannot print right to the physical edge of the paper.

The area they cannot reach is called the non-printable area.

Its size varies by:

Printer model
Paper size
Print mode
Selected tray
Duplex mode
Borderless-print capability
Printer driver

If the document margins are smaller than the printer’s supported area, the printer or application may:

Crop the content
Move it inward
Reduce the whole page
Display a margin warning
Reflow the document

This is why a document can look correct on screen but shift when sent to a particular printer.

Borderless Printing Is a Special Mode

Some inkjet printers support borderless printing for photographs and selected paper sizes.

Borderless mode may enlarge the image slightly so that it extends beyond the paper edge. This prevents white borders but crops a small amount from each side.

It is unsuitable when exact positioning matters.

Laser printers and office multifunction devices commonly require small margins and may not support true edge-to-edge printing.

Check the Document Margins

In Word and similar applications, review the document’s page layout.

Confirm:

Top margin
Bottom margin
Left margin
Right margin
Gutter margin
Header distance
Footer distance
Mirror margins
Binding position

Very narrow margins may not be supported by the printer.

If Word warns that the margins are outside the printable area, do not ignore the warning unless you have confirmed the printer supports those dimensions.

Mirror Margins Can Make Pages Look Uneven

Mirror margins are designed for documents that will be bound like a book.

Instead of fixed left and right margins, the layout uses:

Inside margin
Outside margin

The inside margin alternates between odd and even pages.

This can make pages appear to shift left and right when printed, but it may be intentional.

Check whether Mirror margins or Book fold has been enabled in the page setup.

For ordinary office documents, use standard margins unless binding is required.

What Duplex Printing Means

Duplex printing prints on both sides of the paper.

The two common options are:

Flip on long edge
Flip on short edge

Selecting the wrong one can leave every second page upside down.

Flip on Long Edge

This is usually correct for portrait documents that turn like a book.

Flip on Short Edge

This is commonly used for landscape documents or pages that flip upward like a calendar.

Always consider the page orientation and how the finished document will be handled.

Why Duplex Printing Can Shift the Margins

Printers may handle the front and back of the page slightly differently.

The sheet must pass through the printer, reverse direction or follow another paper path, and then print on the opposite side.

Small alignment differences can occur because of:

Mechanical tolerances
Paper movement
Duplex-unit calibration
Uneven rollers
Thin or curled paper
Driver settings
Binding compensation

For normal office documents, a small difference may be acceptable. For brochures, forms, cards, or double-sided designs requiring precise alignment, it may be very noticeable.

Automatic Duplex vs Manual Duplex

Automatic duplex printers turn the page internally.

Manual duplex requires you to print one side, reload the paper, and print the second side.

Manual duplex is more prone to:

Upside-down pages
Reversed page order
Misaligned content
Incorrect paper orientation
Feeding from the wrong edge
Printing the same side twice

Before printing a large job, test with two pages and mark the top edge of the sheet lightly so you can see how the paper moves through the printer.

Check Page Orientation

The document, printer driver, and loaded paper should agree on orientation.

Common choices are:

Portrait
Landscape
Rotated landscape
Automatic orientation

A PDF containing mixed portrait and landscape pages may be rotated or scaled unexpectedly when automatic orientation is enabled.

For mixed documents, inspect several pages in the preview rather than only the first one.

Why Tables Print Differently

Tables are particularly sensitive to small layout changes.

A slight reduction in printable width can cause:

A column to move to another page
Text to wrap onto additional lines
A row to split
The table to become smaller
The right-hand border to disappear
An extra blank page

Check:

Table width
Cell margins
Page margins
Font substitution
Print scaling
Paper size
Hidden columns
Comments or tracked changes

In spreadsheets, use the application’s page-break preview to see exactly how the worksheet will be divided.

Spreadsheet Scaling Problems

Excel and similar applications include their own powerful print-scaling controls.

Options may include:

No scaling
Fit sheet on one page
Fit all columns on one page
Fit all rows on one page
A specific percentage
A fixed number of pages wide and tall

Fit Sheet on One Page can make a large worksheet unreadably small.

A better approach is often:

Fit all columns on one page
Allow rows to continue across several pages
Set a practical print area
Repeat header rows
Adjust column widths
Use landscape orientation

Do not rely on preview alone. Check the scaling percentage shown in the print settings.

PDF Documents and Embedded Page Sizes

A PDF can contain pages created at different dimensions.

For example, one file may include:

A4 pages
Letter pages
Scanned pages
Oversized drawings
Cropped pages
Mixed portrait and landscape layouts

A PDF reader may automatically choose different scaling settings for different pages.

Check whether the print window is set to:

Size
Poster
Multiple
Booklet
Actual size
Fit
Shrink oversized pages
Choose paper source by PDF page size

For ordinary documents, Fit or Shrink oversized pages is often suitable. For labels and measurements, use Actual size.

Browser Printing Can Reformat the Page

Web pages do not always print exactly as they appear on screen.

Browsers may:

Remove backgrounds
Hide menus
Reflow columns
Change font sizes
Insert headers and footers
Adjust margins
Split images
Use a print-specific version of the page

Check the browser print options for:

Scale
Margins
Headers and footers
Background graphics
Paper size
Pages per sheet

For important web content, saving or exporting it as a PDF first can provide more predictable results.

Headers and Footers Can Push Content

Browsers and some applications add automatic headers and footers containing:

Page title
Website address
Date
Page number
File name

These use space at the top and bottom of the page.

If a page is unexpectedly compressed or pushed onto a second sheet, disable unwanted headers and footers in the print window.

Font Substitution Can Change the Layout

The preview may use one font while the printer or another application substitutes a different one.

Even small differences in character width can alter:

Line breaks
Page breaks
Table widths
Paragraph spacing
Header alignment

Font problems are more likely when:

The document came from another computer
A specialist font is missing
The file was created on another operating system
A PDF was generated without embedded fonts
The printer driver handles fonts differently

Exporting the document as a properly generated PDF can help preserve the layout.

Comments and Tracked Changes

Word-processing applications may print comments or revision marks even when the main document looks normal.

This can reduce the printable width and cause the document to reflow.

Check whether the print option is set to:

Print all pages
Print markup
Document only
List of markup
Document showing revisions

Turn off Print Markup when you need the clean final document.

Check Pages Per Sheet

The printer driver may be set to place multiple document pages on one physical sheet.

Common settings include:

1 page per sheet
2 pages per sheet
4 pages per sheet
6 pages per sheet
9 pages per sheet
16 pages per sheet

If the entire page suddenly prints very small, check this setting before changing the document.

Booklet mode can also rearrange page order and scale pages for folding.

Printer Driver vs Generic Windows Driver

Windows may install a printer automatically using a generic driver.

Basic printing may work, but some features can behave differently or remain unavailable, including:

Duplex printing
Tray selection
Borderless modes
Paper types
Finishing options
Accurate printable-area information
Scaling controls

Install the correct driver from the printer manufacturer’s official support source where appropriate.

For business printers managed through a print server, consult your IT provider before changing the driver.

Reset the Printer Preferences

A printer can remember settings from an earlier job.

For example, it may still be configured for:

Labels
Envelopes
A5 paper
Manual feed
Booklet printing
Two pages per sheet
Duplex
Custom scaling
Heavy paper
Photo mode

Open the printer’s Printing preferences and restore the defaults.

Then configure only the settings required for the current document.

Print to PDF as a Diagnostic Test

Print or export the document to a PDF and inspect the result.

If the PDF layout is wrong, the problem is probably in the document or application settings.

If the PDF is correct but the physical print is wrong, investigate:

The printer driver
Paper size
Scaling
Printer preferences
Tray configuration
The physical printer

This is a useful way to separate document-layout issues from printer-specific problems.

Try Another Application

The same file may print differently from different programs.

For example, try opening a PDF in:

A dedicated PDF reader
A web browser
The operating system’s built-in viewer

If one application prints correctly and another does not, review or reset the affected application’s print settings.

Print a Simple Test Page

Create a basic document containing:

A rectangular border
Page numbers
Text near each margin
A centred image
A horizontal line
A vertical line

Print it at 100% using the correct paper size.

This can reveal:

Uneven margins
Cropping
Scaling
Duplex alignment
Printer-feed problems
Incorrect orientation

A manufacturer’s built-in test page can also help, although it may not test the same application settings.

Check the Printer’s Physical Paper Guides

Poorly positioned paper guides can cause sheets to feed slightly sideways.

This may result in:

Slanted text
Uneven margins
Front-to-back misalignment
Cropped edges
Frequent paper jams

Adjust the tray guides so that they touch the paper without bending it.

Remove damaged, curled, or damp paper and fan the stack before reloading it.

Paper Type Can Affect Alignment

Thick paper, labels, glossy media, and envelopes move through the printer differently from standard office paper.

Select the correct paper type in the driver.

This setting may alter:

Feed speed
Temperature
Duplex availability
Tray selection
Print quality
Paper path

Some printers disable duplex printing for heavy paper or envelopes.

When Exact Size Matters

Do not use Fit to page when printing:

Shipping labels
Scale diagrams
Templates
Forms
Rulers
Sewing patterns
Architectural drawings
ID photographs
Pre-cut stationery

Use Actual size or 100%, then measure a known element on the printed page.

Some printers introduce small physical tolerances, so specialist work may require calibration or professional printing equipment.

A Practical Troubleshooting Order

When the printed page does not match the preview, check these items in order:

Confirm the correct printer is selected
Match the document and printer paper size
Verify the paper tray setting
Set the correct portrait or landscape orientation
Check scaling and avoid applying it twice
Review the document margins
Disable unexpected pages-per-sheet or booklet settings
Confirm the correct duplex flip edge
Reset the printer preferences
Export or print to PDF for comparison
Try another application
Install the correct printer driver
Test with a simple document
Check the physical paper guides and paper condition

This sequence usually identifies whether the fault lies in the document, application, driver, or printer.

When to Contact an IT Professional

Professional support is recommended when:

Several users experience the same layout issue
The printer is managed through a print server
Duplex alignment is consistently poor
The correct driver cannot be installed
Print settings keep reverting
Business forms must print at exact dimensions
Labels or specialised stationery are misaligned
The printer selects the wrong trays
PDFs print differently across workstations
The issue began after an update or driver change

An IT technician can check printer deployment, drivers, paper profiles, application settings, print-server configuration, and device calibration.

Make the Printed Page Match the Screen

When a printed document does not match its preview, the cause is usually not the printer alone.

The final result depends on several layers working together:

Document size, application settings, margins, scaling, printer driver, paper tray, and duplex configuration.

Start by matching the paper size, confirm the correct scaling option, and make sure duplex printing is flipping along the intended edge. Then test with a PDF or simple document to identify where the layout changes.

Hamilton Group can resolve unreliable business printing, correct driver and print-server settings, configure duplex and paper trays, and help ensure important documents print consistently.

Call 0330 043 0069 or visit hgmssp.com to book a meeting with one of our IT experts.

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