Poster Printing Tools & Guides
Free tools and practical guides to help you prepare artwork, choose a poster size, check print quality and print your own photos or AI-generated artwork.
Print quality & resolution
Poster Print Quality Checker
See which sizes your image will print well at. Runs on your device; nothing is uploaded.
Check your image resolution →Poster DPI & Resolution Calculator
Work out the effective DPI of any image at every A-size.
Use the Poster DPI Calculator →Poster Resizer & Aspect Ratio Planner
See how much an image would crop, or where borders appear, at A5 to A1.
Plan your crop or borders →Poster Size Guide
A5 to A1 dimensions in mm and inches, with room-by-room advice.
Read the Poster Size Guide →
AI artwork & custom printing
AI Artwork Print Checker
Check crop and sharpness of Midjourney, DALL·E or ChatGPT images before printing.
Check your AI artwork →AI Poster Printing
How to get AI-generated artwork printed properly as a poster.
Print AI artwork →Create Your Own Poster
Upload a photo or design, preview it at each size and order.
Create your own poster →Artwork Help
File formats, colour, bleed and safe area guidance.
Prepare your artwork for print →
Poster guides
Best poster size for a living room
Which size suits a sofa wall, mantelpiece or cluster.
Read the guide →How to print a photo poster
Getting a phone or camera photo ready for a sharp print.
Read the guide →Printing AI-generated art
Resolution, aspect ratio and prompting for print.
Read the guide →Poster frames buying guide
Choosing frames that fit true A-size prints.
Read the guide →
Seasonal & inspiration
Halloween Studio
Plan a horror poster wall from our curated edit.
Build your Halloween wall →How to style a gallery wall
Layouts and spacing for a mixed set of prints.
Read the guide →