Square postcard printed – modern and visual format
The square postcard is one of the strongest visual card formats – it stands out instantly from rectangular cards and gives design a balanced frame. The 1:1 aspect ratio is familiar from Instagram, which makes it a natural choice when the card is also photographed or shared on social media.
Available in several sizes: 100 × 100 mm for compact messaging, 140 × 140 mm for everyday use, 148 × 148 mm for a slightly bigger look, and 210 × 210 mm when you want a striking and impactful card. Typical uses include product cards, brand communication, wedding invitations, art cards, design cards and modern direct mail.
Order easily from our online shop – domestic printing in Helsinki and fast delivery throughout Finland.
FAQs
270g Ensocoat 2S – Premium Card Material
Ensocoat 2S 270g is a double-sided coated premium board material that combines excellent printability, durability, and a stylish appearance. Both sides are equally smooth and bright, making it the perfect choice for products where the look of both sides matters – such as playing cards, educational cards, and laminated cards.
The multi-layer fiber structure gives the board outstanding rigidity and strength, while its ultra-smooth surface ensures vibrant colors, sharp details, and the ability to handle demanding finishes like digital foil printing, die-cutting, and creative folding.
Why Choose Ensocoat 2S?
- Double-sided quality: identical smooth surface on both sides.
- Excellent printability: vivid colors and sharp, precise details.
- Strong and durable: ideal for repeated use and demanding products.
- Versatile applications: perfect for playing cards, educational materials, menus, and folders.
A Responsible Choice
Ensocoat 2S is available with FSC® and PEFC™ certification, ensuring that its raw materials come from responsibly managed forests. By choosing this material, you support sustainable forestry and environmentally friendly production.
300g Matte – Sturdy and Versatile Card Material
300g matte cardstock is an excellent choice when you want a sturdy and premium feel for your product. Its non-reflective matte surface highlights colors and text beautifully, giving the final product a professional and stylish look. This material is perfect for a wide range of uses, such as business cards, promotional cards, loyalty cards, invitation cards, and postcards.
The 300g matte cardstock is thick and durable enough to maintain its shape and make a strong impression the moment it’s held. Its versatility makes it ideal for both marketing purposes and personal projects – whether it’s strengthening your company’s brand, sending out event invitations, or creating a personalized greeting.
Why choose 300g matte cardstock?
- Sturdy and durable: retains its form and withstands repeated handling.
- Elegant matte finish: showcases text and images without distracting glare.
- Versatile applications: perfect for business cards, invitations, postcards, product tags, and much more.
Sustainable and high-quality
This material is made from FSC®-certified fibers, ensuring responsible forestry and environmentally friendly production. It is a durable and reliable choice for high-quality printed products.
330g Arvokas – Klassiselle postikortille suunniteltu kartonki
330g arvokas postikorttikartonki tarjoaa jämäkän ja laadukkaan tuntuman, joka on tuttu perinteisistä postikorteista. Sen tasainen ja miellyttävä pinta toistaa kuvat ja grafiikan erinomaisella tarkkuudella, antaen lopputulokselle elegantin ja viimeistellyn ilmeen.
Tämä kartonki on erityisesti suunniteltu postikorteille – se kestää kuljetuksen, käsittelyn ja postimerkin liimauksen menettämättä muotoaan. Se sopii täydellisesti myös kutsuihin, mainos- ja taidekortteihin, kun tavoitteena on ammattimainen ja arvokas vaikutelma.
Miksi valita 330g arvokas kartonki?
- Aito postikorttituntuma: jämäkkä ja kestävä rakenne.
- Laatua viestivä ulkonäkö: kuvat ja sävyt toistuvat selkeinä ja kirkkaina.
- Sopii myyntiin ja postitukseen: ei taivu helposti, säilyttää muotonsa.
Vastuullinen valinta
Kartonki on valmistettu FSC®-sertifioiduista kuiduista, mikä tukee vastuullista metsänhoitoa ja ympäristöystävällistä tuotantoa. Turvallinen ja laadukas vaihtoehto niin kaupallisiin kuin henkilökohtaisiin painotuotteisiin.
Postcards square
Customize & Estimate
Start Customizing with Any Option
Sizes and their use cases
Choose the size based on message length and intended use.
×100
Compact yet quietly impressive. Suits small thank-you cards, product code cards and handout cards.
×140
The most common square postcard size. Enough space for an image and message while still easy to mail.
×148
Square matching the height of A5 – pairs naturally with other A-format cards when a series uses different shapes.
×210
Striking and impactful. Recommended for product launches, premium wedding invitations and brand communication when you want a bold presence.
Printing single- or double-sided in full colour.
Materials and use cases
Choose the board based on the mood and intended use.
- 270 g: postcard board, natural white – classic feel
- 300 g: matte, natural – calm, designed for design use
- 330 g: postcard board, bright white – sturdy premium
- 400 g: matte, natural – substantial and thick
- 300 g: matte, 100% recycled board – eco-friendly choice
Typical use cases
- Brand communication and design cards
- Product cards and social-media-friendly visuals
- Modern wedding invitations and event cards
- Art cards and gallery exhibitions
- Premium thank-you cards for online shops
- Mailable cards as a follow-up to Instagram campaigns
Print artwork
Send a print-ready PDF following these specs – remember to set the file size to match the square size you have chosen.
- File format: print-ready PDF
- Exact size: chosen square size (100×100, 140×140, 148×148 or 210×210 mm)
- Resolution: 300 dpi
- Bleed: 3 mm on every edge
- Safe area: at least 3 mm inside the trim line
- Colour space: CMYK recommended, RGB accepted
- Double-sided: page 1 = front, page 2 = back in the same PDF
Frequently asked questions about the square postcard
What sizes are available for the square postcard?
Four sizes are available: 100 × 100 mm, 140 × 140 mm, 148 × 148 mm and 210 × 210 mm. The size is selected during ordering in the configurator.
Which square size is the most popular?
140 × 140 mm is the most common choice – enough space for an image and message while still compact. For design use and brand communication, 148 × 148 mm or 210 × 210 mm are often chosen.
Why choose a square over a rectangle?
The square format stands out instantly in a mail stack and gives design a balanced frame. The same 1:1 ratio also works on social media, so the card and an Instagram post can be designed on the same template.
Can a square postcard be mailed as a regular letter?
Smaller squares (100×100 mm and 140×140 mm) fit small letter dimensions. Larger squares (148×148 mm and 210×210 mm) require large letter postage. Check current postage rates from your local postal service.
How fast can square postcards be printed?
aDigi is an agile digital print shop in Helsinki. The production time is selected at checkout, and the fastest option is 1 working day with a print-ready PDF.
