Paper sizes
Standard formats, dimensions and choosing a sheet.
- What size is A4 paper?
- What is A4 versus Letter?
- What is Letter size in mm?
Print Questions & Answers
Straight answers for paper, pixels, image files and print production.
200 concise answers
Find the part of your print workflow that needs an answer.
Every answer leads to a relevant calculator, paper reference or production tool.
Pixels & DPI
Resolution math for print dimensions and image files.
- How many pixels is A4 at 300 DPI?
- How many pixels is A4 at 72 DPI?
- How many pixels is A4 at 150 DPI?
Image resolution
Preparing files that hold up at final size.
- What image size do I need for A4?
- Can I print a 1920 × 1080 image?
- Can I print a 4K image?
Print preparation
Bleed, trim, safe areas and production files.
- What is bleed?
- How much bleed should I add?
- What is bleed versus margin?
Photo printing
Ratios, framing and common photo print sizes.
- What is a standard photo print size?
- What ratio is 4 × 6?
- What ratio is 8 × 10?
Typography & layout
Type, margins, columns and readable print design.
- What font size is readable in print?
- What are points versus pixels?
- How many points are in an inch?
File formats
PDF, PNG, JPEG, SVG and practical exports.
- What format is best for printing?
- Is PDF better than JPEG?
- Should I use PNG for print?
Color & printing
RGB, CMYK, profiles, black and proofing.
- What is RGB versus CMYK?
- Should I convert RGB to CMYK?
- Why do print and screen colors differ?
Production & finishing
Paper weight, binding and finishing choices.
- What does GSM mean?
- Is higher GSM always thicker?
- What GSM is good for flyers?
Projects & events
Cards, posters, labels, books and event print.
- What size is a business card?
- What size is a postcard?
- What size suits wedding invitations?