Nozzle Check Test Page
Run a nozzle check test to spot clogged inkjet nozzles by color before a big print job — print it directly from your browser in seconds.
Before you print: open the print dialog (Ctrl/Cmd+P) and enable Background graphics under "More settings," and judge the result from the printed page — the yellow line is faint on any screen but should still be visible on paper.
Per-color nozzle line check (K / C / M / Y)
What to Look For
Complete, unbroken lines
Every fine line in each color row should run solid and continuous, with no visible white gaps.
No missing sections
A color with a gap or a large blank stretch usually means that nozzle group is clogged and needs a cleaning cycle.
Consistent line weight
Lines should look uniformly solid top to bottom — fading partway through a row points to a partial clog.
All four colors present
If an entire row is blank, check that the cartridge is seated correctly and has ink before assuming it's a clog.
Frequently Asked Questions
How do I run a nozzle check test?
Print this page and compare each color row to a healthy pattern: solid, unbroken lines. If a row has gaps or is faint, run your printer's built-in cleaning cycle and reprint to check.
What does a broken or gapped line mean?
A gap in a line means that specific nozzle is clogged with dried ink for that color. One or two cleaning cycles from your printer's maintenance menu almost always clears minor clogs — see our full guide to reading a nozzle check pattern for what larger gaps or a missing color usually means.
Should I run this test on a laser printer?
No — laser printers use toner and a drum, not inkjet nozzles, so this test doesn't apply. Use the black & white test page to check laser output instead, and see our ink vs toner guide for what laser-specific problems like banding and ghosting actually mean.