How should I design for large scale printing size?

How big should my image be if Im desining for a large banner?

the size of the banner is EQS2 - 39.4" w x 79" h

Im not sure what the font size or pixel size or dpi should be so when it is printed it is correct.. Also what color should I use for a black background?

im good with photoshop just never designed something for large scale printing..

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.


I strongly suggest asking your printer what they need in terms of file formats and dpi. Typically, the black background will be produced by the media they print onto, so they should be able to answer that question for you as well.

Beyond that, go with scalable (vector) art if you can, rather than a raster image. Typically large banners are not viewed at the same distance as a smaller image, so the dpi won't be as critical as it would be for other printing.

A V GeorgeAdditional General ManagerCommented:
Most large format printers use 1440 dpi (dots per inch NOT pixels per inch) just like any reasonably good low cost laser printer - only difference is that the size of each 'dot' is much bigger.

To get maximum sharpness in the printed banner, your photoshop image resolutions in dpi should ideally be a multiple of the printer's resolution.

For most jobs, creating your photoshop artwork at 720 dpi  with canvas size in proportionate size is sufficient. I have obtained perfect print out for a vinyl hoarding 60 ft (720") x 20 ft (240") from a potoshop file of 6" (inch) x 2" (inch) in 720 dpi.

As already pointed out by LHerrou, banners and hoardings are meant to be viewed from at least a few feet away so the difference in the sizes of the dots used by the large format printer does not make any visible difference to the viewer.

For your job, creating a 3.94" x 7.9" artwork in 720 dpi in photoshop would be sufficient and should give you an exact reproduction with no re-sizing called for at the printer's end.

Good Luck!

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
LHood1Author Commented:
39.4 x79
CompTIA Security+

Learn the essential functions of CompTIA Security+, which establishes the core knowledge required of any cybersecurity role and leads professionals into intermediate-level cybersecurity jobs.

A V GeorgeAdditional General ManagerCommented:
The size indicated was not a mistake. It will not be necessary to make your photoshop artwork in the full banner size at 720 dpi - the file will be too big and dfficult to process even on a fast computer.

A 3.94" x 7.9" artwork at 720 dpi is quite sufficient to make a banner of 39.4" x 79" size using a large format printer :-)

Good Luck!
I reiterate: I strongly suggest asking your printer what they need in terms of file formats and dpi - no point in investing a lot of effort before you've done that. If you don't know who will be printing it, find a couple of places that have the capability, and ask them as if you were going to use them.
LHood1Author Commented:
Thanks again for all of your postings..I really appreciate the quick response..
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Fonts Typography

From novice to tech pro — start learning today.