
Pick The Right Postcard Size
A well-designed postcard not only impresses your recipients but also sets you apart from others.
Why you need the right post card sizes
Finding the right postcard size for a direct mailing campaign could be challenging if you aren’t aware of the international postcard size. If you choose a dimension that’s too small, it may end up being overlooked. Choosing a too big postcard size not only will cost you more but will also run the risk of your message being overlooked due to multiple folds needed to fit into the mailbox. Also, size matters when sending for printing. Postcards are one of the best direct mail marketing tools. You should pick the right postcard size, along with other elements, for making the best use of the USPS rates.
Postcard dimensions
The standard postcard size used globally:
International standard postcard size: | Size | mm | inches |
---|---|---|---|
A6 | 148 x 105 mm | 5.8 x 4.1 inches | |
Universal Postal Union (UPU) | Maximum | 235 x 120 mm | 9.25 x 4.72 in |
Minimum | 140 x 90 mm | 5.51 x 3.54 in | |
US Postal Service Standard Postcard Size: | Maximum | 152.4 x 107.9 mm | 6.0 x 4.25 in |
Minimum | 127.0 x 88.9 mm | 5.0 x 3.5 in |

How to create a postcard with Designhill
No matter whether you’re making a postcard as a stunning travel reminder or getting the words out for your new business, Designhill’s postcard maker — a simple DIY tool — simplifies postcard creation for you.
All you need is to launch the postcard generator, take your pick from an extensive collection of postcard templates. These are easy-to-customize templates, which you can mold as per your specific needs. You can add your own image/artwork, pick the desired color, place the desired text, and change the theme — you get complete personalization freedom.
See the preview section to inspect if everything is aligned. Once done, you can save it, share it or download it!
Postcard design best practices
Do not include too many things or elements in your postcard. You want your audience to understand the context of the postcard quickly, right? So steer clear of the unwanted elements and keep the design super simple.
Choosing the right postcard dimensions is essential. If it’s for international delivery, keep it 148 x 105 mm.
Different people categorize their mails in different ways. Therefore, you need to make sure the front and the backside of your postcard harmonize each other.
Under USPS (United States Postal Services), all postcards of similar dimensions and thickness should be mailed at the same rate. Even in an era when mailboxes have shrunk in terms of use, a large postcard size like 11"x6" stands out. You can use the extra space on the postcard to add a call-to-action, an offer, or some distinctive elements.
Simplicity is the key to attract customers towards your postcard — no matter what size it is. The postcard design should include a professional image or illustration to boost its visual appeal. A high-quality image printed on a quality paper adds to your brand recognition.
Consider personalizing your postcards if you're targeting specific customers based on demographics, age groups, or income. Unlike a generic postcard, a custom postcard gives your recipients a personalized look and feel.
Postcards do not need to be silent or subtle—add a big and bold font. Grab the recipient’s attention with strategically designed messages so that they could take action. Make phone number, contact address, or website URL obvious and easy to scan. A personalized QR code or a custom-tailored map can tell them who you really are and what solutions do you provide.
Postcard design mistakes to avoid
Some of the most typical postcard design mistakes that you should avoid are:

What should my postcard look like?
Here are some of the best ideas for your postcard —
It should attract: your postcard should take just one glance to attract a recipient. A simple design is key to attract recipients.
It should feature upcoming events/programs and create buzz: in case you have events like seminars, webinars, a concert, or something lined up, you can raise the awareness using a postcard. This is the best way to let your recipients know about your upcoming event.
Feature your products and display its benefits: different postcard sizes help marketers show different products and their benefits. This way, you get a competitive edge over your rivals.
Feature your store to raise awareness: if you have a physical store, click a beautiful picture. Feature it on your postcard to leave a lasting impression on your customers.
Where can you find the best postcard images?
Need to create a photo postcard? Don’t worry; source some of the best postcards feature images from various platforms such as Buffer, Drip, and so on. But if you’re a marketing professional, we suggest you using real images. No matter which way you choose, make sure the image you use is professional.
Apart from Drip and Buffer, there are other platforms such as Unsplash, Pexels, and StockSnap, which you can source your postcard images from.
Explore Designhill's postcard maker to create a striking postcard for marketing or personal purposes.


Final Thoughts
Postcards are one of the most inexpensive ways to get your message across. Those who are targeting customers through direct mailing should consider postcards as their best buddies. But the one thing that every marketer should keep in mind is to pick the right postcard size.
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