Print a precise grid to find doubled lines, skewed paper feed, stretched pages and your printer's real margins. Then measure the 100 mm bar with a ruler and let the scale checker tell you whether the printer is printing at true size.
In the print dialog choose Scale: 100% / Actual size, turn off Fit to page, pick the paper you loaded (), and use Normal quality (not Draft). Colour pages: make sure Colour (not Grayscale) is selected.
Measure the 100 mm bar at the bottom of your printout with a ruler and type the length. We tell you if the printer shrank or enlarged the page.
Preview of the exact sheet that prints. Only this sheet prints — the rest of the page is hidden.
| What you see | Meaning | Fix |
|---|---|---|
| Doubled or fuzzy vertical lines | Bidirectional print-head misalignment | Run print head alignment from the driver or printer menu |
| Grid rotated on the page | Paper fed at an angle | Adjust the paper guides, reload paper, clean rollers |
| Circles slightly oval | Page scaled differently in each direction | Print at 100% / Actual size, turn off borderless |
| Ruler shorter than 100 mm | "Fit to page" or shrink option on | Set scale to 100%; use the scale checker above |
| A corner target or frame side missing | Edge outside the printable area or the page is offset | Normal for 3 mm; if one side loses much more than the other, the paper or print is off-centre |
| Colour fringes on lines (colour laser) | Colour registration drift | Run colour calibration / registration from the printer menu |
Alignment uses very little ink. After aligning, check colours with the colour printer test page or black output with the black and white test page.
Print this page at 100% scale, then check that the grid lines are straight and not doubled, the circles are round, the diagonals meet in the centre and the vertical-line check pairs join cleanly. Doubled or jagged lines mean the print head needs aligning.
Use the printer's own alignment utility: on Windows open Printer properties › Maintenance (or Services) › Print head alignment; on Mac open the manufacturer's utility; on many printers it is in the front-panel Setup or Maintenance menu. Then print this page again.
If the grid is rotated on the paper, the paper is being fed at an angle. Move the paper guides so they touch the stack, don't overfill the tray, and check for worn feed rollers.
They are measured from the paper edge. Frames that print show how close to the edge your printer can print. Most printers can't print the 3 mm frame; many can't print 5 mm. That is normal — it is the printer's unprintable margin.
The page was stretched in one direction, usually by a "Fit to page" or borderless setting, or by uneven paper feed. Print at 100% / Actual size and measure the 100 mm ruler.
Yes. It prints from your browser and nothing is uploaded.