1. Thumbnail Specifications by Platform
| Platform | Ratio | Recommended Size | Notes |
|---|---|---|---|
| KakaoTalk Card (standard) | 1:2 | 800×400 | Most common KakaoTalk link thumbnail format |
| KakaoTalk Wide (new) | 6:4 | 1200×800 | Supported since 2025; better for portrait photos |
| Facebook / X / Naver OG | 1.91:1 | 1200×630 | Standard OG for most blogs and social networks |
| Instagram Feed (square) | 1:1 | 1080×1080 | Instagram and Naver Blog hero image |
| Instagram Story / Threads | 9:16 | 1080×1920 | Full-screen portrait, mobile-centric |
2. Recommended Sharing Workflow
- Get your invitation page URL from a doljanchi platform (Dalpeng, Filmake, Onlyforyou, Thegoodday, Dollove, etc.).
- Enter your baby's name, date, venue, and photo in this tool and select a template.
- Download the KakaoTalk 1:2 PNG and the OG 1200×630 PNG separately.
- Upload each file to the appropriate platform (KakaoTalk, Naver Band, Facebook, Instagram).
- Send the invitation link together with the auto-generated KakaoTalk message template.
3. Fixing KakaoTalk Thumbnail Cache
KakaoTalk caches scraped OG images for hours to days. When changes aren't reflected immediately:
- Add a query parameter like
?v=2or?r=0419to create a new URL and reshare. - Use the Facebook Sharing Debugger or Kakao Message Debugger to force a re-scrape.
- If nothing works, change the og:image URL itself (including the filename or hash).
4. Template Recommendations
- Classic (Ivory & Rose Gold) — Formal atmosphere; suited for hotel venues.
- Modern (Navy & Mint) — Clean typography, minimalist feel; elegant for friend invitations.
- Pastel (Pink & Baby Blue) — The most versatile default; works for both boys and girls.
- Hanbok (Traditional Five Colors) — Perfect for photos with the baby wearing traditional dress.
- Balloon (Orange & Purple) — Festive party vibe; great for casual celebration events.
5. Photo Selection Tips
- For landscape formats (1:2, 6:4, 1200×630), position the subject on the left or center — text appears on the right.
- For square (1080×1080), a centered subject looks best.
- For story (1080×1920), a portrait-style upper-body shot of the baby works best.
- Prefer solid or pastel backgrounds — busy backgrounds reduce text readability.
- Your uploaded photos are processed entirely in the browser and never sent to any server.
6. KakaoTalk Message Template
A KakaoTalk invitation message template is auto-generated alongside your OG image. Example:
[Sky's First Birthday Invitation]
2026.05.10 (Sun) 12:00 · Grand Ballroom, XYZ Venue, Gangnam
We would love to celebrate with you. 🎂
— Kim Yeongsu & Lee Sujin
7. Shareable Query Link
This tool generates a shareable query link like doljan.bal.pe.kr/?name=Sky&date=2026-05-10&tpl=pastel that pre-fills all inputs for anyone who opens it.
8. Dedicated Platform vs. OG-Only Tool
Dedicated doljanchi platforms (Dalpeng, Filmake, Onlyforyou, Thegoodday, Dollove, Moumoon) offer built-in invitation editors. This tool is designed specifically to optimize KakaoTalk and social sharing thumbnails for an invitation you've already created. Use both together for the best result.
9. Traditional Doljabi Item Guide
- Gavel — Lawyer, judge
- Stethoscope — Doctor, health
- Microphone — Performer, entertainer
- Money — Wealth, entrepreneur
- Thread (실) — Longevity
- Pencil / Book — Scholar, academic
- Bow / Arrow — Warrior, general
- Soccer ball — Athlete
- Laptop — IT, technology
- Ruler / Blueprint — Architect, engineer
10. Related Tools
For a QR code for doljanchi cash gifts, see chukgum.bal.pe.kr. For wedding cash gift amounts, see chukui.bal.pe.kr. For D-day countdown, see dday.bal.pe.kr.