Birthday Flat Cards

Celebrate every birthday with personalized flair by choosing the perfect birthday flat cards. These custom creations offer a unique way to share joy and excitement with friends and family, capturing the essence of each special day. Whether you're planning a grand party or an intimate gathering, our selection of beautifully designed cards allows you to express your style and set the tone for your celebration. From vibrant colors to elegant designs, find the ideal card to make your loved one's birthday truly unforgettable.

Bold Headline Birthday Card, White, 5x7 Flat, Write Your Own Greeting, Matte, Signature Smooth Cardstock, Square, White

Starting at $3.43

A stylish white birthday card with a favorite photo and personalized message, made of smooth cardstock.

Pros: customization, met expectations, satisfaction

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Perfectly Aged Birthday Invitation, Black, 5x7 Flat, Luxe Double-Thick Cardstock, Square, Black

Starting at $5.42 $4.62

A stylish 5x7 flat birthday invitation on 100% recycled black cardstock with a bracket trim.

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Speckled Hello Birthday Invitation, White, 5x7 Flat, Pearl Shimmer Cardstock, Rounded, White

Starting at $4 $3.87

A stylish white birthday invitation with a speckled design, 5x7 size, matte finish, and ticket trim.

Pros: good quality, accurate representation, great price

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Classic Caption Birthday Invitation, Brown, 5x7 Flat, Matte, Signature Smooth Cardstock, Square, Taupe

Starting at $3.43

A brown 5x7 matte birthday invitation with a faux foil/glitter design on signature smooth cardstock.

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Hooray Day Birthday Card, Yellow, 5x7 Flat, Pearl Shimmer Cardstock, Square, Golden

Starting at $3.72 $3.60

A yellow 5x7 birthday card with rounded edges, featuring a favorite photo and personalized message.

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Painted Cake Birthday Card, Pink, Rose Gold Foil, 5x7, Matte, Personalized Foil Cardstock, Rounded, Salmon

Starting at $5.39 $5.38

A personalized 5x7 birthday card in pink with rose gold foil accents and a matte finish.

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Dino Mite Birthday Invitation, Blue, 5x7 Flat, Standard Smooth Cardstock, Rounded, Navy

Starting at $3.34 $3.33

A stylish blue 5x7 flat birthday invitation on 100% recycled cardstock with ticket trim.

Pros: fast shipping, adorable design, customizable

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Party People Birthday Invitation, Beige, 5x7 Flat, Pearl Shimmer Cardstock, Square, Cream

Starting at $3.72 $3.60

A beige birthday invitation with a pearl shimmer cardstock and scallop trim, designed by Petite Lemon.

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Bold Party Birthday Invitation, White, 5x7 Flat, Matte, Signature Smooth Cardstock, Square, White

Starting at $3.43

A stylish 5x7 flat birthday invitation in white on matte signature smooth cardstock.

Pros: easy to use, perfect card stock, beautiful print

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Brilliant One Birthday Invitation, White, 5x7 Flat, Pearl Shimmer Cardstock, Square, White

Starting at $3.72 $3.60

A stylish white birthday invitation with luxe double-thick cardstock and space for favorite photos and event details.

Pros: photo quality, beautiful, meets expectations

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Elated Elegance Birthday Invitation, Black, 5x7 Flat, Luxe Double-Thick Cardstock, Square, Black

Starting at $5.42 $4.62

A black 5x7 birthday invitation with an elegant design on pearl shimmer cardstock, featuring faux foil and glitter accents....

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Blushing Birthday Birthday Invitation, Pink, 5x7 Flat, Luxe Double-Thick Cardstock, Square, Dusk Pink

Starting at $5.42 $4.62

A stylish pink birthday invitation with space for favorite photos and event details.

Pros: Excellent customer service, Quick delivery and accurate results, Overall pleased with purchase, Great quality and design, Beautiful color and photo options

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Bokeh Confetti Birthday Invitation, none, Black, 5x7 Flat, Matte, Signature Smooth Cardstock, Rounded, Black

Starting at $3.71 $3.70

A stylish black birthday invitation with bokeh confetti design and rounded trim, customizable with photos and event details....

Pros: Beautiful design, High quality, Easy to personalize, Quick delivery, Professional appearance

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Bright Birthday Birthday Invitation, Pink, 5x7 Flat, Pearl Shimmer Cardstock, Rounded, Priscilla

Starting at $4 $3.87

A stylish pink birthday invitation with space for favorite photos and event details.

Pros: cute, met expectations, nice colors

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Adorable Rainbow Birthday Invitation, Gray, 5x7 Flat, 100% Recycled Cardstock , Square, Gray

Starting at $3.88 $3.70

A stylish gray birthday invitation with a rainbow design, 5x7 size, made with luxe double-thick cardstock.

Pros: cuteness, quality, cute design

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Surprise Party Birthday Invitation, Beige, 5x7 Flat, Standard Smooth Cardstock, Square, Rye

Starting at $3.06

A stylish birthday invitation with a beige bracket trim and pearl shimmer cardstock.

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Level Up Birthday Invitation, Yellow, 5x7 Flat, 100% Recycled Cardstock , Square, Sunshine

Starting at $3.88 $3.70

A stylish yellow birthday invitation with room for photos and event details on pearl shimmer cardstock.

Pros: template, unique design, good product

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Happy Confetti Girl Birthday Invitation, Pink, 5x7 Flat, Matte, Signature Smooth Cardstock, Rounded, Shrimp

Starting at $3.71 $3.70

A stylish pink birthday invitation with confetti design, perfect for a girl's celebration.

Pros: cute design, beautiful, ease of use

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Cocktail Cheers Birthday Invitation, Black, 5x7 Flat, Matte, Signature Smooth Cardstock, Rounded, Black

Starting at $3.71 $3.70

A stylish black birthday invitation with space for photos and event details on signature smooth cardstock.

Pros: easy to use, good invitation, invitation design

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Floral One Birthday Invitation, Beige, 5x7 Flat, Luxe Double-Thick Cardstock, Square, Latte

Starting at $5.42 $4.62

A beige floral birthday invitation with space for photos and event details on signature smooth cardstock.

Pros: easy to assemble, perfect picture, nice paper

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Elegant One Birthday Invitation, White, 5x7 Flat, Pearl Shimmer Cardstock, Square, White

Starting at $3.72 $3.60

A stylish white birthday invitation with rounded edges, perfect for adding photos and event details.

Pros: design, layout, beautiful

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Party Candles Girl Birthday Invitation, Pink, 5x7 Flat, Standard Smooth Cardstock, Rounded, Hot Pink

Starting at $3.34 $3.33

A stylish pink birthday invitation with space for photos and event details, perfect for girls.

Pros: cute design, perfect picture sharing, clear image

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Happy Hooray Birthday Invitation, Blue, 5x7 Flat, Luxe Double-Thick Cardstock, Square, Blue

Starting at $5.42 $4.62

A stylish blue 5x7 flat birthday invitation on standard smooth cardstock, perfect for adding photos and event details.

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Light Festivity Birthday Invitation, White, 5x7 Flat, Pearl Shimmer Cardstock, Square, White

Starting at $3.72 $3.60

A pearl shimmer birthday invitation with ticket trim and customizable photo and event details.

Pros: good quality, clear fine text, design

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Birthday Flat Cards

Birthday flat cards offer a timeless and elegant way to celebrate life’s milestones, capturing the spirit of the occasion with creativity and style. Whether you’re planning a cozy winter gathering in January, a vibrant outdoor party in the spring, or a milestone birthday bash any time of year, flat cards provide a beautiful canvas for sharing your message. Their single-panel design allows for striking visuals, from heartfelt photos to playful illustrations, making each card a keepsake that guests will cherish. With ample space for personalized details, you can set the tone for your event—whether it’s a whimsical first birthday for your child, a sophisticated soirée for a loved one, or a surprise party that’s been months in the making. The tactile experience of holding a thoughtfully designed card in hand adds a layer of anticipation and excitement, inviting recipients to join in the celebration and marking the date as something truly special.

When selecting birthday flat cards, consider the personality and preferences of the guest of honor. For a child’s birthday, bright colors and playful designs can capture the joy and wonder of the occasion, while for adults, you might opt for a more refined layout with elegant fonts and subtle embellishments. These cards are not only invitations but also meaningful mementos—many families tuck them away in scrapbooks or display them on the fridge as a reminder of happy times. If you’re sending birthday wishes from afar or organizing a virtual celebration, flat cards can serve as thoughtful greetings, bridging the distance with a personal touch that digital messages simply can’t replicate. Friends, family members, classmates, and colleagues alike will appreciate the gesture, especially during the quieter winter months when a bright envelope in the mailbox brings a welcome burst of cheer.

As you browse the selection, think about how the card’s texture, finish, and imagery reflect the mood you want to create. From glossy and vibrant to softly matte, the right choice can elevate your message and make your invitation stand out. You might be drawn to themes that echo the season—snowflakes and cozy motifs in January, or bold patterns for a milestone birthday. For those who appreciate a smooth, polished look, you may want to explore options like Birthday Smooth Cards, which offer a refined finish and a luxurious feel. Whatever your style, birthday flat cards make it easy to express your creativity and thoughtfulness, ensuring your celebration starts on a memorable note.