Profile Assets
Profile Photo
| Dimensions | 640 × 640 px recommended |
|---|---|
| Aspect Ratio | 1:1 |
| Max File Size | 20 MB |
| File Formats | JPG, PNG |
| Notes | Circular display in chat; full photo shown on profile tap |
Profile Background Image
| Dimensions | 1080 × 1920 px recommended |
|---|---|
| Aspect Ratio | 9:16 |
| Max File Size | 20 MB |
| File Formats | JPG, PNG |
| Notes | Shown as a full-screen background on the personal profile card |
KakaoTalk Channel Cover
| Dimensions | 640 × 640 px recommended |
|---|---|
| Aspect Ratio | 1:1 |
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
| Notes | Square icon for business Kakao Channels; shown in search and chat |
[Ad]
Shared Image Specs
Chat Image
| Max File Size | 9 MB |
|---|---|
| File Formats | JPG, PNG, GIF, WEBP |
| Notes | Shared in personal or group chats; GIFs play inline |
Story Post Image
| Dimensions | 1080 × 1920 px recommended |
|---|---|
| Aspect Ratio | 9:16 |
| Max File Size | 20 MB |
| File Formats | JPG, PNG |
| Notes | KakaoTalk Story (timeline) photo post |
Custom Emoticon / Sticker
| Dimensions | 360 × 360 px |
|---|---|
| Aspect Ratio | 1:1 |
| Max File Size | 1 MB |
| File Formats | PNG, GIF |
| Notes | Transparent background; animated stickers use GIF; submitted via KakaoEmoticon Studio |
Video & Voice Specs
Chat Video
| Max File Size | 300 MB |
|---|---|
| File Formats | MP4, MOV |
| Resolution | Up to 1080p |
| Notes | Shared directly in chat; H.264 + AAC recommended |
Voice Message
| File Formats | AAC, M4A |
|---|---|
| Max Duration | Up to 3 minutes |
| Notes | Recorded in-app via the voice message feature |
Text & Character Limits
Chat Message
| Character Limit | 10,000 characters |
|---|
Status Message (Profile)
| Character Limit | 60 characters |
|---|---|
| Notes | Short status shown below the display name on the profile card |
Display Name
| Character Limit | 20 characters |
|---|
Channel Post (Business)
| Character Limit | 2,200 characters |
|---|---|
| Notes | Text limit for Kakao Channel feed posts sent to subscribers; up to 40 images/videos per post |
Ad & Business Messaging Specs
Kakao Channel Message — Image
| Dimensions | 800 × 400 px |
|---|---|
| Aspect Ratio | 2:1 |
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
| Notes | Image included in branded channel messages sent to subscribers; official spec also allows any width ≥80px with aspect ratio ≤1:2.5 |
KakaoTalk Biz Board (Banner Ad)
| Dimensions | 960 × 300 px |
|---|---|
| Max File Size | 300 KB |
| File Formats | PNG |
| Notes | Prominent banner ad shown in the chat list; managed via Kakao Ads. Official Kakao Developers spec (updated Oct 20, 2026) requires 960 × 300 px PNG-24 with a 300 KB cap; legacy 1029 × 258 px creatives can no longer be registered or edited |
Carousel Feed Ad
| Dimensions | 800 × 600 px (4:3) or 800 × 400 px (2:1) per card |
|---|---|
| Aspect Ratio | 4:3 or 2:1 |
| Max File Size | 10 MB per image |
| File Formats | JPG, PNG |
| Notes | Kakao Channel carousel feed message (캐러셀 피드형): 2–6 cards, all using the same ratio; card title up to 20 characters, body text up to 180 characters |