The finished size of an A3 poster is 297mm x 420mm, so set your artwork up at 303mm x 426mm to add 3mm bleed to both sides

Designing Yourself 
When ordering from instantprint you can be confident your artwork is in safe hands. Regardless of how your produce your design every order is checked by our in-house studio team to ensure that the file is print-ready.

If your design is complete our online proofing tool is available after you click ‘add to basket’ and it will check your artwork and apply fixes for common issues if needed. 

If you are unsure, our Personal Artworkers can check over your artwork for free before you place an order. 

You can also access our free design online templates which are available as an option after you click ‘add to basket’. 

We’ll design for you 
If you need support with designing, we can always create the design for you. We have recently launched our new Design Service and offer design across all our products. For more information click here.

Want to learn more?

If you’d like to learn more about the technical side of print ready artwork we have a series of guides for you to read covering subjects as bleed, colour and resolution.

What if I don’t have an A3 print design?

If you don’t have the time or a team to create a design for you then worry not. We have a we have loads of A3 poster templates available in our library. Whether you’ve already got an idea to put onto a blank canvas or you need a bit of inspiration to get you started, we have the template for you.

With A3 poster templates ready to go including summer party, bake sale, film festivals and general advertisement designs, the hardest part of the process will be choosing from the variety available!

What type of paper should I choose to print my A3 artwork on?

The type of paper you choose to print your A3 poster on is dependent on a couple of factors: what finish you want to achieve and your budget. If you’re sticking to a budget then our lightweight silk (150gsm) is perfect and our most cost-effective, but still high-quality option. We also have our classic silk option available (250gsm) which is thicker than the lightweight and firm to the touch. The final choice for your A3 printing is our premium silk (350gsm) option which is ideal if you’re looking for an extremely impressive poster; it boasts an ultra-luxurious feel.

How do I upload my A3 poster design?

It’s quick and easy to upload the artwork for your A3 prints. If you have your artwork ready to go, then great! Simply follow the order process and upload when prompted. Our team will then take it through our 10 point check system before it heads off to be printed. If your artwork isn’t ready, then don’t worry. You can buy your A3 printing now and upload your artwork to your account area later on!*

*Please remember that by uploading your artwork later, this will affect your delivery date.

If you have any more questions about your order, our experienced team are always on hand to help.

How will my A3 prints be produced at instantprint?

There’s a wealth of behind-the-scenes activity that goes on here at instantprint. Your A3 poster prints go on an incredible journey once you have completed your order. From arriving with our office team to go through our 10 point quality check by your own personal artworker, to the machines on the factory floor where your A3 posters will be printed on our innovative Scitex and Indigo printing presses.

When will my A3 prints be delivered?

Need your shiny new A3 poster prints in a hurry? A3 prints orders approved by 6:30pm will be dispatched for delivery the next working day. Delivery takes a further working day. For example, if you approve your order by 6:30pm on a Monday, we’ll dispatch your order on Tuesday and it will be delivered on Wednesday.

Which paper type should I choose?

We offer a range of quality stocks to suit every business’ need or budget. Our 150gsm value silk is perfect for cheap poster printing. Our classic 250gsm silk is a good all-rounder. Or, for a multiple-use, long-life poster, our premium 350gsm silk is a fantastic choice.

How do I upload my poster design?

When you add your posters to your basket, you’ll be prompted to upload your artwork. Or, if you want to continue shopping, you can upload your artwork in your basket at a later time.