Why the same PDF prints differently on two printers

You print the same PDF on two printers, but the pages do not match. One may look darker, softer, larger, or slightly shifted. That does not automatically mean the PDF is faulty: each printer can interpret the print settings and reproduce color and detail differently.

Use a test page to see whether the difference affects all printing or just this PDF. Then check the settings that most often change size, text, and color.

Compare the two printers

Open the Printer Test Page and print it on each printer. Use the same paper size and, as far as the driver allows, the same quality and color options.
Put the sheets side by side in the same light. Compare the text, straight lines, gray steps, and color blocks. Look for a consistent difference, such as one page being darker or one printer losing fine lines.
Print the PDF on both printers. In the print dialog, check that both jobs use the same page size, orientation, scaling, and color or grayscale choice.
Change one setting at a time and print the affected page again. This makes it easier to tell whether a setting, the printer, or the PDF viewer is causing the difference.

Use the same paper if possible. Different paper can change how ink spreads, how glossy a page looks, and how dark colors appear. Make sure both printers are loaded with the paper size selected in the print dialog.

What the result means

The test pages also look different

The difference is probably in the printer, its driver, its paper, or its current condition, rather than in the PDF. A color printer may use a different color profile or ink and toner mixture. The two models may also have different print resolution and ways of creating shades. Continue with the fixes below, especially matching paper and quality settings.

The test pages look similar, but the PDF does not

The PDF viewer or a setting for that particular print job is more likely to be involved. Check page scaling, color handling, font rendering, and any option that says to print as an image. Try opening the same PDF in another browser or PDF app and print one page with the same settings. If the result changes, the viewer or its print options are part of the cause.

The page size or position is different

One job may be scaled to fit, printed at actual size, or centered differently. A PDF page can be a different size from the paper in the tray. Compare the selected paper size with the PDF page size, then check the scaling option in the print dialog.

One printer has missing lines, streaks, or uneven color

This points more toward a printer-specific issue than a PDF setting. Check the printer's maintenance status and run its built-in cleaning or alignment process if needed. A browser test page can reveal visible print defects, but it cannot identify every mechanical or ink system problem.

How to fix the difference

Match the paper and page size. Confirm that the same paper size is selected in the print dialog and loaded in each printer. In Windows 11, open Settings › Bluetooth & devices › Printers & scanners, choose a printer, then check Printing preferences if available. On macOS, open File › Print in the PDF app and check Paper Size. Driver labels vary by printer.
Set the same scaling option. Choose actual size or 100% on both printers if the PDF is designed for that paper. If you need to fit it to the sheet, use the equivalent fit option on both. Scaling can make text and thin lines look different as well as change the page dimensions.
Compare quality and color settings. In each print dialog, check print quality, color or grayscale, and any draft or economy mode. On Windows 11, these may be under Printer properties or Printing preferences. On macOS, look in the print dialog's printer-specific options, such as Media & Quality. Use matching settings for a fair comparison.
Check the PDF viewer's options. Print a single page from the same app on both printers. If the app offers a setting to print as an image, test it once, especially if text or transparent graphics appear incorrectly. It may help with a rendering problem, but can make output slower or less sharp.
Update or reinstall the printer driver. A driver translates the page into instructions the printer can use. An old or generic driver can expose fewer options or handle fonts and color differently. Get the correct driver for the printer model from its manufacturer, then restart the computer and try again.
Run the printer's maintenance checks. Use its own control panel or printer software to check ink or toner, clean printheads if applicable, and align the printhead. Follow the printer's instructions, since repeated cleaning can use ink.

On Windows 11, the app's print window may have options in addition to Printing preferences. On macOS, printer-specific controls can appear in a menu within the print dialog. If an option is missing, check the driver's settings rather than assuming both printers support the same features.

When the printer is the cause

If one printer produces streaks, missing colors, or broken lines on both the PDF and the test page, the printer itself needs attention. Check for a low or faulty cartridge, clogged ink nozzles, a dirty print path, or a maintenance warning. If the problem remains after the printer's recommended cleaning and alignment, contact the manufacturer or a repair shop. For an older, low-cost printer, replacing it may cost less than repairing it.

Why identical PDF files are not guaranteed to look identical

A PDF can preserve page layout, fonts, and vector shapes, but the final sheet is still produced by a specific printer, driver, paper, and print process. Color values on screen are also light, while printed colors come from ink or toner on paper. Printers can use different color profiles, which are instructions for translating colors into their own output.

For a document that must match closely, use the same printer model, paper, driver, and print settings for every copy. For ordinary documents, matching the page size, scaling, and quality settings is usually enough to avoid the most noticeable differences.