A4 or Letter? Choose your page with confidence
A short guide to paper sizes, orientation, and choosing the right format for a professional result.
Match the paper you have
A4 measures 210 × 297 mm. US Letter measures 215.9 × 279.4 mm. Both work well for certificates. Choose the size your printer and available paper support, and use the same setting throughout editing and printing.
Landscape or portrait?
Landscape gives names and certificate titles more horizontal room. Portrait has a more letter-like shape and can suit employment documents with longer descriptions. Changing orientation in the editor keeps your content and adjusts its vertical placement; review the spacing afterwards.
PDF for printing, PNG for images
Download PDF creates an image-based PDF at your selected export quality, with the exact page size. Print / Save as PDF opens the browser print dialog, which can retain vector text and lines where supported. PNG and JPG use your selected 150- or 300-PPI quality. At 300 PPI, a portrait Letter image is 2,550 × 3,300 pixels.
Keep an editable copy
A PDF or PNG is a finished output. Download an editable project as well if you may need to change names or dates later. You can reopen that file from My designs, including on another device.