A 148×148mm folded greeting card is a square card with a finished folded size of 148mm wide by 148mm high. It is produced from a flat 296×148mm sheet, scored down the centre and folded in half.
That extra space and balanced shape make square greeting card printing particularly effective for birthday artwork, colourful illustrations, photography, celebration ranges and memorable visual covers. The format works equally well for independent retailers, makers, resellers, organisations and businesses sending customer thank-you cards.
This guide explains the dimensions, production process, artwork requirements, media choices and practical uses of 148×148 greeting card printing.
What size is a 148×148 folded greeting card
The finished folded card measures:
- 148mm wide
- 148mm high
- 148×148mm overall
- Four square panels when opened
Before folding, the card is supplied as a flat sheet measuring 296×148mm. The long edge is scored at the centre, creating two 148×148mm halves.
The flat card has four panels:
- Front cover
- Back cover
- Inside left
- Inside right
The product instructions should always be followed when preparing artwork. One live-page bullet currently refers to a 298mm width, but the product description and the card’s geometry indicate that the correct flat trimmed size is 296×148mm.
“The finished card is 148×148mm, while the artwork file is larger because it must include the bleed needed for accurate trimming.”
For print-ready artwork, supply a file measuring 302×154mm, including 3mm bleed on every edge.
How square greeting card printing works
Square birthday cards printing follows the same basic production process as other folded cards, but the geometry needs careful attention.
The process generally involves:
- Preparing a flat 296×148mm card layout.
- Adding 3mm bleed to every outside edge.
- Printing the chosen design onto the selected media.
- Scoring the card down the centre of the 296mm width.
- Trimming the printed sheet.
- Folding the card to its finished 148×148mm size.
- Adding the selected envelope where available.
- Despatching the completed order or preparing it for local collection.
The centre score is important because it creates the fold without relying on a printed guideline. Artwork should not place important text, faces or fine details directly across this area.
The back of the card also needs to be considered. If your design includes a full-bleed background, colour or illustration, that artwork should continue onto the back panel where required. Stopping the design at the front panel can leave the finished card looking incomplete.
Why the square format suits birthdays and celebrations
A square card gives the front cover a strong, balanced canvas. This is especially useful when the design is built around a central illustration, bold pattern or single visual idea.
The format suits:
- Birthday cards with balloons, cakes, confetti or party streamers
- Anniversary and engagement cards
- Graduation and milestone celebrations
- Party invitations
- Square illustration and photography
- Thank-you cards for customers
- Seasonal ranges, including square Christmas cards printing
- Branded greetings for clients, suppliers and business contacts
The equal width and height also help artwork feel deliberate. A central cake motif, a circular arrangement of balloons or a full-cover photograph can sit naturally within the square without needing to be cropped into a tall or wide rectangle.
For retailers and makers, 148mm square cards can create a recognisable collection. Several designs can share the same dimensions while using different colours, illustrations or occasions. This makes the format suitable for a coordinated birthday range, an artist-led collection or a seasonal display.
Choosing the right card media
The product page lists a selection of card media. The best choice depends on the design, writing experience, desired rigidity and overall feel.
300gsm Uncoated
Uncoated card has a natural, writable surface. It is useful when the recipient is expected to write inside the card or when a softer, more tactile finish suits the design.
350gsm Silk
Silk media has a smoother surface and supports bright, clean colour reproduction. It can be a good option for bold birthday artwork, detailed illustrations and photographic covers.
400gsm Artboard
Artboard provides a more substantial, rigid feel. It is suitable for premium card ranges and designs where the physical weight of the card is part of the experience.
280gsm Kraft
Kraft media has a warm brown appearance and a natural character. It can work well for handmade-looking ranges, independent makers and designs that use the kraft tone as part of the visual composition.
300gsm Gesso
Gesso media offers a distinctive surface that can give artwork a more tactile appearance. It may be useful for creative, illustration-led or premium designs.
Gsm means grams per square metre. In simple terms, a higher gsm usually indicates a heavier and more substantial sheet, although the final feel also depends on the type and construction of the media.
Finishes, envelopes and despatch choices
Depending on the live options available for your chosen specification, you can select from:
- No Laminate
- Matt Laminate
- Gloss Laminate
- Soft Touch Laminate
A laminate can influence how the cover looks and feels. Gloss can make colours appear more vibrant, while matt and soft touch finishes offer a more subdued or tactile result. No Laminate keeps the natural surface of the selected media.
The product also lists:
- White envelopes
- Kraft envelopes
- Single-sided printing
- Double-sided printing
- 3–5 working-day despatch
- 2 working-day despatch
- 1 working-day despatch
Available combinations can depend on the live product options, media and order requirements, so check the product page carefully before submitting an order.
Artwork preparation for 148mm square cards
Correct artwork preparation helps prevent avoidable trimming and folding problems.
Set up the flat document correctly
Create the artwork at:
- 302×154mm overall
- 296×148mm trimmed size
- 3mm bleed on every edge
- Centre score at the middle of the 296mm width
The finished folded panels will each measure 148×148mm.
Keep important details away from the edges
Keep text, logos, faces and fine design details comfortably inside the trim area. A safe margin of at least 3mm is a sensible minimum, with a larger margin often giving the design a cleaner appearance.
Background colours and images that should reach the edge must extend through the bleed area.
Plan all four panels
Before exporting, decide where each element belongs:
- Front cover artwork
- Back-cover branding or message
- Inside-left message or illustration
- Inside-right message, greeting or signing space
If the design is intended to continue around the card, check the direction of the artwork carefully. A proof can help identify panels that have been placed upside down or in the wrong order.
Prepare birthday artwork with the square shape in mind
A square composition benefits from a clear focal point. Consider:
- Placing a cake or balloon arrangement centrally
- Leaving enough open space around the main illustration
- Using colour contrast for strong shelf visibility
- Avoiding important details too close to the centre score
- Checking that confetti and streamers extend naturally across the panels
If you are producing personalised square cards, make sure names, ages, dates or messages remain within the safe area. Check every variation before approving the final artwork.
Supplying multiple designs
The ordering system cannot detect multi-page documents automatically. If your artwork contains two or more pages or designs, choose the correct quantity when placing the order.
Where the live options allow it, multiple designs can be submitted within one order quantity. This can be useful for retailers, resellers and makers creating a mixed collection. Label files clearly and explain how the quantity should be divided between each design.
Always proof the document before upload. A multi-page PDF may contain the correct artwork but still be ordered as a single design if the quantity has not been selected correctly.
Who uses 148mm square cards
The format is flexible enough for both personal and commercial work.
Independent retailers and makers
A square card can provide a distinctive footprint for a counter display or seasonal collection. Birthday ranges, illustrated cards and locally inspired designs can sit together while still allowing each cover to remain individual.
Resellers and wholesale buyers
Resellers can use multiple designs within a consistent format. This helps simplify packaging, display planning and stock management, particularly when building a broader greeting card range.
Businesses and organisations
Square cards are suitable for customer thank-you messages, anniversary milestones, event invitations and seasonal business greetings. A well-planned design can feel warmer and more personal than a standard promotional leaflet.
Photographers and illustrators
The square shape works naturally with artwork created for social media, photography portfolios and illustration collections. It can preserve the balance of the original image while giving the printed card a clear identity.
Printing in Tavistock and across the UK
ABC Service produces greeting cards in-house at 69 West Street, Tavistock, Devon. Local customers can arrange collection, while businesses and organisations across the UK can use the delivery service.
Our wider printing services support businesses, makers, retailers and organisations with a range of printed materials. You can also explore the wider greeting card printing category for other formats, including A7, A6, A5 and 5×7 cards.
If you have an idea but need help preparing it for print, our graphic design service can help with layout, artwork and print-ready files. It is particularly useful when a design needs to work across several card panels or multiple variations.
Start with the finished format in mind
The most reliable way to plan a square greeting card is to begin with the finished folded size, then work backwards to the flat artwork.
For 148×148 greeting card printing, remember:
- The finished folded card is 148×148mm.
- The flat trimmed sheet is 296×148mm.
- Artwork should be supplied at 302×154mm with 3mm bleed.
- The centre score sits halfway along the 296mm width.
- Artwork may need to continue onto the back.
- Important text and details should remain inside the safe area.
- Multiple-page artwork requires the correct order quantity.
- Media, lamination, envelopes and turnaround options should be checked on the live product page.
You can review the full specification and place an order through 148×148 greeting card printing.
Summary and Takeaway
Square greeting card printing gives birthdays, celebrations, illustrations and business messages a distinctive finished format. The 148×148mm card is large enough for expressive artwork while remaining practical for retail displays, personal messages and customer communications.
The important production detail is the relationship between the folded and flat sizes. The finished card is 148×148mm, but the print-ready artwork needs to be prepared as a 302×154mm file with 3mm bleed around the flat 296×148mm card.
With the right panel planning, media choice and proofing process, 148mm square cards can become a bright birthday range, a thoughtful business greeting or a memorable collection of personalised designs. What could your square card range communicate at first glance?