If you find yourself searching for image sizes every time you post on social media, this guide will be your last search. Here is the complete 2026 reference for recommended image sizes across major platforms -- plus how to create them quickly with XBRUSH canvas.
Instagram Image Sizes
Use Case | Recommended Size | Ratio |
|---|---|---|
Square feed post | 1080x1080px | 1:1 |
Portrait feed post | 1080x1350px | 4:5 |
Stories and Reels | 1080x1920px | 9:16 |
Reels cover | 1080x1920px | 9:16 |
Profile picture | 320x320px | 1:1 |
Portrait format (4:5) gives your post more real estate in the feed. Stories and Reels use the same 9:16 ratio.
YouTube Image Sizes
Use Case | Recommended Size | Notes |
|---|---|---|
Video thumbnail | 1280x720px | Minimum 640x360 |
Channel art | 2560x1440px | 768x432px safe zone |
Channel profile | 800x800px | Displayed as circle |
Banner (mobile view) | 1546x423px | Center area of channel art |
Thumbnails directly affect click-through rate. Preparing 2-3 versions for A/B testing is a good practice.
Facebook Image Sizes
Use Case | Recommended Size | Notes |
|---|---|---|
Feed post | 1200x630px | Wide ratio |
Stories | 1080x1920px | 9:16 |
Page cover | 820x312px | Mobile: 360x640 |
Page profile | 170x170px | Circular display |
Ad image | 1200x628px | Text under 20% recommended |
KakaoTalk Channel Image Sizes
Use Case | Recommended Size |
|---|---|
Cover image | 1920x640px |
Profile picture | 640x640px |
Post image | 800x400px or larger |
Naver Smart Store Image Sizes
Use Case | Recommended Size | Notes |
|---|---|---|
Main product image | 1000x1000px | Square required |
Additional images | 1000x1000px | Up to 10 images |
Detail page images | 860px wide | Height unlimited |
The main product image must be at least 1000px square to enable the zoom feature.
Naver Blog Image Sizes
Use Case | Recommended Size |
|---|---|
Main photo | 966x644px |
Body images | 966px wide or less |
Thumbnail | 1200x630px (OG tag) |
Creating Platform-Ready Images with XBRUSH
Knowing the sizes is one thing -- resizing and re-editing every time is another. With XBRUSH canvas, you can set the exact dimensions you need and generate an optimized image for that ratio directly.
Step 1: Set Your Canvas Size
Open XBRUSH canvas and enter your target dimensions. You can set any size directly -- Instagram feed (1080x1080), YouTube thumbnail (1280x720), or any custom size.
Step 2: Generate or Replace Background
Generate new image: Use a prompt to create the mood you want.
Use existing product photo: Upload your photo and replace only the background.
Example prompt (Instagram feed banner):
minimalist product showcase, pastel background, soft natural light, square compositionStep 3: Export and Distribute
Export your image as JPG or PNG. When distributing to multiple platforms, you can crop the same image to each platform's required ratio.
Tools Used
XBRUSH Canvas -- set canvas size and generate images
XBRUSH Background Replace -- replace backgrounds on existing product photos for platform-specific images
XBRUSH Inpainting -- edit specific areas and create space for text
Frequently Asked Questions
Why do my images get cropped on Instagram?
Instagram previews feed posts in a 1:1 square or 4:5 portrait ratio by default. If you upload a wide 16:9 image, the top and bottom will be cropped. Set your canvas to the correct ratio before creating your image to avoid cropping.
What is the minimum YouTube thumbnail size?
The minimum is 640x360px, but this looks blurry on high-resolution screens. The recommended size is 1280x720px (HD). File size must be under 2MB.
Why do image sizes differ across platforms?
Each platform is designed around different content formats and screen layouts. Instagram is built for square and portrait mobile content, YouTube for landscape video, and Kakao Channel for banner covers -- hence the different size requirements.
Is AI-generated image quality good enough for SNS marketing?
Yes. Modern AI image tools like XBRUSH produce quality suitable for real marketing use. They are especially effective for repetitive tasks like background replacement, color consistency, and seasonal visuals -- saving significant time and cost.
Can I export one image in multiple platform sizes at once?
With XBRUSH canvas, you can export your image at any size you choose. You can either crop the same image to different ratios or create separate versions for each platform from the start.