社群媒體圖片尺寸調整器
FREE將圖片調整為 Instagram、Facebook、Twitter、LinkedIn 等平台的完美尺寸。免費、快速、無浮水印。
將圖片調整為 Instagram、Facebook、Twitter、LinkedIn 等平台的完美尺寸。免費、快速、無浮水印。
The Free Social Media Image Resizer by Nano Banana is a specialized online tool for resizing images to perfect social media dimensions. Whether you need to resize for Instagram posts, Facebook covers, Twitter headers, or LinkedIn banners, our tool provides pre-configured sizes for all major platforms. No more guessing dimensions or cropping manually—get pixel-perfect results every time. Perfect for social media managers, content creators, marketers, and businesses managing multiple social accounts. 100% free, no watermarks, works directly in your browser.
Instagram, Facebook, Twitter, LinkedIn, YouTube, Pinterest, TikTok—resize for any platform without searching for dimensions.
We maintain current recommended dimensions as platforms update their requirements. Never use outdated sizes.
Your images never leave your device. All processing happens locally for complete privacy and security.
Start resizing immediately. No signup, no email, no account needed. Just upload and resize.
Resize the same image for multiple platforms at once. Save hours of repetitive work.
Smart algorithms preserve image quality while resizing. No pixelation or blur.
點擊上傳或拖放您的圖片。支援 JPG、PNG 和 WebP 格式，最大 50MB。
Choose your target platform (Instagram, Facebook, Twitter, etc.) and specific size (post, story, cover, header).
Fine-tune the crop area and positioning. See real-time preview of how it will appear on the platform.
Click download to get your perfectly sized image. Upload directly to your social media account.
All recommended dimensions for Instagram (1080x1080, 1080x1350, 1080x1920), Facebook, Twitter, LinkedIn, and more.
See exactly how your image will appear on each platform before downloading. No surprises.
Download in JPG, PNG, or WebP format. Choose quality settings for optimal file size.
Maintain proper proportions automatically. Prevents distortion and ensures professional results.
Create versions for multiple platforms simultaneously from a single upload.
Resize images on your phone or tablet. Perfect for on-the-go content creation.
Resize for feed posts (1:1, 4:5), stories (9:16), reels, IGTV covers, and profile pictures with perfect dimensions.
Create cover photos (820x312), event banners, ad images, and post images optimized for Facebook engagement.
Resize header images (1500x500), profile pictures, and in-stream images for maximum impact on Twitter.
Create company page banners (1128x191), post images, and article covers for professional networking.
Generate eye-catching thumbnails (1280x720) that boost click-through rates on your videos.
Create vertical pins (1000x1500) optimized for Pinterest's feed algorithm and maximum saves.
Always use source images at least 2x the target size. For 1080px output, start with 2160px or larger for best quality.
Keep important elements away from edges. Some platforms crop differently on mobile vs desktop.
Preview how images appear on phones, tablets, and desktops before publishing.
Use the same aspect ratio and style across platforms for recognizable brand presence.
Use JPG at 80-85% quality for photos, PNG for graphics with text. WebP for modern browsers.
See how our free tool compares to other solutions for resizing social media images.
| 功能 | Nano Banana | 其他 |
|---|---|---|
| 價格 | 永久免費 | Canva: Free limited / Pro $12.99/mo, Adobe: $20.99/mo |
| 隱私 | 基於瀏覽器，無需上傳 | 基於雲端，圖片儲存在伺服器 |
| 平台範本 | 50+ 預設尺寸 | 依訂閱等級不同 |
| 批次處理 | 無限制 | 免費版通常有限制 |
| 註冊 | 不需要 | 需要帳號 |
| 浮水印 | 從不 | 免費版常見 |
Social Media Manager
“This tool saves me hours every week. I can resize one image for all our social platforms in seconds.”
Small Business Owner
“Finally a free tool that doesn't add watermarks! Perfect for my Instagram shop.”
Content Creator
“The preset sizes are always accurate. No more googling dimensions for each platform.”
Instagram Post (Square): 1080x1080px, Portrait: 1080x1350px, Landscape: 1080x566px, Story/Reels: 1080x1920px, Profile Picture: 320x320px.
Click to upload or drag and drop
PNG, JPG, WebP up to 10MB