True borderless printing needs two things: a printer that supports a borderless mode and that mode switched on in the print dialog. Setting the document margins to zero is not enough on its own, because most printers leave a small unprintable strip at the edge. The certificate maker builds a full-bleed design, and this guide covers how to print it edge to edge.
Why zero margins still leaves a border
Most inkjet and laser printers grip the sheet as it feeds through and cannot lay ink right up to the edge. They reserve a thin strip, often a few millimetres, that simply will not print. So even a document with no margins comes out with a white frame, because the limit is the hardware, not the file.
This catches people out because the design looks edge to edge on screen. The page is fine; the printer is the constraint.
Turn on the printer’s borderless mode
Edge-to-edge printing has its own setting, usually called borderless or full bleed, in the print dialog. It often appears only when you pick a supported paper size and a photo or borderless media type. Switching it on tells the printer to overprint slightly so the ink runs off all four edges, leaving no white strip.
If you cannot find the option, your printer most likely does not offer it for that paper size. Borderless support varies widely by model, and some only allow it on certain sizes such as 4x6 photo paper.
Keep important content away from the edge
Because borderless works by printing a little larger than the page, a thin sliver at each edge runs off and is lost. That is fine for a background or a colour fill, but risky for anything that must stay intact:
- Keep text and logos a few millimetres inside the edge so the overprint does not clip them.
- Let backgrounds and borders bleed deliberately, so there is no gap if the paper shifts slightly.
- Print one test copy before a full run, since the exact cut varies between printers.
When borderless is not an option
If your printer cannot do it, you have two fallbacks. Print on a larger sheet and trim down to a clean edge with a guillotine or craft knife, or accept a narrow even border as a deliberate frame. For certificates, a thin, consistent border often looks intentional rather than like a failed full-bleed.
To choose the right sheet first, see A4 vs Letter paper sizes, or open the certificate maker to design a full-bleed page.
