Make sense of pixels, paper and print.
Use these practical guides to choose the right document size, protect your layout and understand what a calculator result means before you send a file to print.
Find the right size before you calculate.
Search photo, ISO paper, US paper, poster and canvas formats. Compare inches, millimetres, pixels, megapixels and crop guidance at any PPI.
PPI vs DPI: what actually matters for printing?
Learn the practical difference between image PPI and printer DPI, how effective print resolution is calculated and why changing metadata does not add detail.
How large can I print my image?
Calculate a realistic maximum print size from image pixel dimensions, target PPI, crop and viewing distance.
A4 vs Letter: ISO and US paper sizes in pixels
Compare A4 with US Letter, plus A-series, Legal and Tabloid dimensions in millimetres, inches and pixels at 300 PPI.
Bleed, trim and safe area explained
Understand trim size, bleed and safe margins, calculate the full document dimensions and avoid white edges or cut-off text.
Aspect ratio and cropping for print
Understand why images crop at common print sizes, compare popular ratios and resize without stretching.
Image resolution checklist before printing
A practical preflight checklist covering source pixels, crop, effective PPI, colour, bleed, export and final inspection.