printer test
Thermal Receipt Printer Test
Useful for POS and thermal receipt printers after setup, media changes or print-quality problems.
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DeviceOK printer testReceipt test
DEVICEOK RECEIPT TEST
Check darkness, missing dots, feed alignment and clipping.
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Check darkness, missing dots, feed alignment and clipping.
This test page helps you inspect print output. DeviceOK cannot automatically see the physical page, so you report what you observe after printing.
What did the print look like?
Private by design
The reference content is generated locally.
Use the result as evidence, not a guess.
This test checks
- Text sharpness
- Thermal darkness by visual inspection
- Feed/clipping
How to read it
Actual printable width depends on the printer, driver and paper roll.
Persistent missing vertical dots can warrant the maker's cleaning/service procedure.