I’m sure all designers can relate to this ~ how can I best explain to my clients what type, size and resolution the files I need in order to produce the project at hand? It’s easy to get super technical in describing all this. I know I’m guilt of going over a few client’s heads with what dpi represents.
This is not to say that clients are dense, far from it. Mine are brilliant at what they do. I learn new stuff from them all the time. So I thought I would return the favor and draft a simple guide, not too technical on photo and graphic files and what is going to work best for print projects. Note I didn’t go into the virtues of RGB verses CMYK. That’s for another post all together. Second note: If you found this to be of value, please share. There is also a PDF download of this guide at the end of this post.
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You are working with designer on a project that involves print pieces. It could be a promotional take-away for a trade show, it could be full-page ad for a trade publication or it could be an annual report.
All of these printing pieces will inevitably need photos that relate to your business and of course, your company logo. In providing the photo and graphic files, you might hear your designer talk about photo resolution, vector and raster files. Resolution can be a tricky to understand, because most people outside the design world think, “it looks great on my computer screen, it should work for print, right?”
Try this simple exercise:
Print out a web page that contains photos or better yet, one large photo. How does it look to you? Granted printing out a photo from a desktop printer is not the same as a photo professionally printed. But, for the sake of this exercise, you’ll notice the photo that looks great on your computer screen, looks rather fussy and lacks sharpness when printed. Why is this? It’s because the photos (as well as graphics) are set at a low resolution. Perfect for the web, not meant for printing.
Not All Photos Are Created Equal

As you can see the same size photo in inches can have different levels of quality
because of their different resolutions. The more dots per inch means the higher the quality the photo will have and the likelihood it will print well.
So how can you find out if your photos have a high enough resolution for print? While you may not have a software program, like Photoshop, that you can open photos and check the image size, there is a simple way to gauge photo file sizes.

Go and look at the photo files you have stored on your computer, CD, DVD or thumb drive. Compare the file sizes. In the this screen grab, it shows two different photo file sizes. At 15.7 MB, the Brochure_Cover file is much larger, a good indication it’s a high resolution photo file. Compare that with the Townhome_photo file. It’s only 204 KB. This is a sign that the photo file is way too small for print purposes.
TIFF verses JPEG
Both photo file types work for print purposes, provided the files size is large enough. A TIFF file is uncompressed and will have a higher file size than a JPEG. JPEG are compressed photo files and will show a lower file size, but have the same quality as the TIFF photo file. A rule of thumb: A photo file that is either a TIFF or JPEG and has a file size of at least 6 MB, it should work for print purposes. Note that JPEG photo files are compressed, so if the file is under 6 MB, chances are it will still pass mustard and have the resolution needed for print purposes.
A Final Note About Photo Sizes
When it comes to using photography in print, ideally, a designer will want photos at the size they will be printed. For example, an 8 x 10 inch photo is needed for a layout. The designer will want an 8 x 10 photo file at 300 dpi ~ that makes file size around 20+ MB. If you are using a professional photographer, arranging for the proper photo file size to be provided to you and your designer becomes a non-issue.
But in the case where you are supplying photos you’ve taken using your digital camera, chances are the photos are very large in scale by inches, 36” x 27” for example, but the photos will have a low resolution of 72 dpi. Not to worry ~ send them to your designer anyway. Your designer can adjust the file as needed for final output.
A designer can take the example photo size of 36” x 27” at 72 dpi and scale
down to 6” x 4.5” and while increasing the resolution to 300 dpi. Not only is the photo at a dimensionally practical size, it also has the resolution for print quality. Rule of thumb: The larger the photo is in inches and at 72 dpi, the larger the scaled down photo for print can be.
Raster Verses vector graphic Files
The basic difference between a raster graphic file and a vector graphic file is that raster files are made up of pixels, just like photos. Vector files are composed of paths. Don’t worry about remembering the different terms, but do be aware of the benefits of having vector files of your company logo and other graphics that may need to be printed at different sizes ~ from small on business cards to large on trade show banners and signage.

Because vector files are composed of paths and not pixels, they are not affected by resolution. In other words, a vector graphic can be scaled up to the size of a bill board and never lose its quality. It will always print clear and sharp.
How do you know if you have vector files of your company logo? If you have them, these files will have extensions such as .ai and .eps and you probably can’t open them. When a designer creates your company logo, he or she probably supplied you with a JPEG file equivalent of your logo so you could import it into Word documents, etc. However, it’s a good idea to request, (after you’ve paid your designer, of course), the .ai and/or .eps files of your logo to have on hand. A vendor or another designer may need or prefer to use those vector files to ensure the best print quality for your next project.
Providing the Right Photo and Graphic Files
I think this has happened to all designers, myself included, when a client will send a photo or graphic imported into a Word document, thinking that this should be fine to use for their print project.
The problem with sending photos in a Word document is you’re sending
a “copy” of the photo and not the actual photo or graphic file itself. The
copy does not have the quality needed for print purposes.

You will need to provided files that have extensions .TIFF or .JPEG for
photographs and files that have the extensions .ai or .eps for logos and
other graphics.
A Special Note:
Supplying photos that have already been printed, for example, an 8 x 10 glossy photo of your board of directors, will not generate the best file for print purposes. Even if your designer has a high quality scanner, scanning a print photo makes it a “second generation”, in terms of quality. It’s like taking a photocopy of a photocopy. The quality goes down every time you make a copy of the copy. The photo may turn out grainy, because of the dots existing in the print photo. It’s always best to supply your designer with digital photography and not printed photography.
Sending Photo and Graphic Files
Have lots of photos and graphics to send? While e-mailing isn’t always an option, it’s one way to get photos and graphics to your designer in a timely fashion. An easy way to send a number of files at once is to place the files in a folder and zipped it ~ this compresses the file folder. So long as the zipped folder is under 7 MB, it should send just fine. You should probably confirm with you designer on the size of an e-mail attachment he or she can accept.

A Special Thanks
The idea for putting this Client’s Guide to Visual Content together come out of a discussion from the LinkedIn Creative Freelancers Group. Jennifer Quinton of Quinton Design Studio started the conversation by asking how other freelance designers explain photo resolution to clients. Most designers, at one time or another, are faced with having to explain resolution, photo quality for print purposes and what the difference is between raster files and vector files.
So I decided to draft a guide that speaks to clients who are confused by designer speak, but would like a better understanding on what files will work best for their print projects. I hope I kept it clear and simple enough. That can tough order. After all, it is hard for designers to explain something they know so well and are experienced at, to clients who are new to these terms and principles.
Besides Jennifer, I’d like to thank:
Diane Stewart of Stewartstudio Graphic Design
Gerry Suchy of gmsdesigns
Kirk Roberts of Kirk Roberts Design
Lori Barnes a Freelance Print Designer
Nicholas Nawroth an all around creative dude.
Each of you provided thoughtful content that went into creating this guide.
Download a PDF of this guide.