Christmas Card Sizes for AI Christmas Photos: Dimensions, DPI, and Postage

Your AI Christmas photo deserves a size that looks great on fridges and in frames—and that does not trigger surprise postage. This guide pairs classic sizes with the exact DPI, bleed, and print math for ThatMoment.Studio’s 864x1184 output so you can order confidently tonight.

Create your AI Christmas photo if you still need the render, then match it to the size below.

Quick picks (decide in 60 seconds)

• Best all-around: 5x7 (premium feel, regular stamp if under 1 oz).
• Budget-first: 4x6 (cheapest to print; regular stamp).
• Collage or timeline: 4x8 slim or 5x7 (more breathing room).
• Statement/business: 5.5x8.5 (plan for extra postage).
• Square look without fees: Keep a square design centered on a 5x7 canvas.

Size snapshots with AI-specific tips

5x7 inches (most popular) ⭐

• Why it works: Frames easily, mail-friendly with one stamp under 1 oz.
• AI fit: 864x1184 upscales ~20–25% to hit 300 DPI cleanly; keep faces 0.25 in inside trim.
• Use when: One hero AI Christmas photo or a small collage plus a short note.

4x6 inches (budget hero)

• Why it works: Lowest cost to print; still mail with a regular stamp.
• AI fit: Minimal upscale (10–15%) for full 300 DPI; or print at ~260–280 DPI without visible loss.
• Use when: Large mailing list or quick reprints.

4x8 slim (bookmark vibe)

• Why it works: Great for multi-photo layouts or “year in review” strips.
• AI fit: Crop with wide margins; test text at 100% to avoid cramped captions.
• Use when: You want modern, premium feel without oversized postage.

5.5x8.5 inches (statement)

• Why it works: Poster-like space for multiple AI scenes and longer updates.
• AI fit: Upscale carefully; plan for thicker envelopes and likely $1.20+ postage.
• Use when: Business mailers, big announcements, or frameable keepsakes.

5x5 square (looks great, costs more)

• Why it works: Visual standout.
• Postage: Non-machinable surcharge (~$0.28) plus regular stamp in the U.S.
• AI-friendly workaround: Design square but place it on a 5x7 canvas to dodge the surcharge.

Flat vs folded for AI Christmas photos

• Flat cards: Best for showcasing one strong AI render; modern and cost-efficient. Use the back for a mini gallery or note.
• Folded cards: Great when you want a longer message or to pair a traditional photo inside with an AI Christmas photo on the cover. Mind thickness—heavy cardstock can trigger non-machinable fees.

DPI, bleed, and safe zones (print math that matters)

• Source: ThatMoment.Studio exports at 864x1184 px.
• Targets:
  • 4x6 → 1200x1800 px at 300 DPI (10–15% upscale or print at ~260–280 DPI).
  • 5x7 → 1500x2100 px at 300 DPI (20–25% upscale or print at ~240–260 DPI).
• Bleed: Add 0.125 in on all sides if your printer requires it.
• Safe zone: Keep faces/text at least 0.25 in inside trim.
• Format: JPEG, sRGB, 90–95% quality; PNG not needed for print.

Need the full math and workflow? See print sizes for AI Christmas photos and holiday cards.

Postage math you actually need (U.S.)

• Standard letter (rectangular, up to 1 oz): ~$0.73 (Forever stamp). Covers 4x6, 5x7, 4x8 on typical paper.
• Non-machinable add-on: +~$0.28 for squares, rigid, or uneven cards.
• Large envelope/over 1 oz: ~$1.20–$2.00 depending on weight.
• Pro move: Weigh one finished card (card + envelope) on a kitchen scale; over ~28 g usually exceeds 1 oz.

Envelope fit cheat sheet

• A7: Fits 5x7 (most common).
• A6: Fits 4x6.
• Square: Fits 5x5; triggers non-machinable fee.
• A9: Fits 5.5x8.5; often needs extra postage.

Match size to your AI photo plan

• One hero render: 5x7 flat or folded; keep safe margins generous.
• 2–4 renders: 5x7 or 4x8; anchor one large image and support with smaller insets.
• 5+ moments: 5.5x8.5 or digital New Year’s letter; keep type 11 pt or larger.
• Family + couple variants: Use the same base photo and crop differently for 5x7 (print) and 4x5 (social). See how to turn any photo into an AI Christmas photo.

Avoid reprints and fees

• Test-print one card before ordering 100.
• Weigh a finished sample; plan postage before checkout.
• If you love square designs, place them on a 5x7 canvas to mail with a standard stamp.
• Order early; if cutoffs pass, send a digital version plus a short note.

If you need a card tonight

1. Generate your AI Christmas photo at ThatMoment.Studio.
2. Choose 5x7 for balance (or 4x6 for budget).
3. Set canvas to your size at ~260–300 DPI, add 0.125 in bleed if required.
4. Keep faces 0.25 in inside trim; export JPEG sRGB at 90–95% quality.
5. Upload to your printer and order; save a 4x5 crop for social.

Pick the size that fits how you want people to feel when they open the envelope—then make your AI Christmas photo worthy of that space.