Instagram Image Resizer: Resize Pictures for Posts, Stories & Reels
Upload a picture and pick an Instagram preset. Square posts are 1080 x 1080px, portrait posts are 1080 x 1350px (4:5), and Stories and Reels are 1080 x 1920px (9:16). Download the resized file and post it, or stay in the tool and switch to Facebook, TikTok, LinkedIn and the other platform sizes already on this page.
1. Upload Image
Click to upload or drag and drop
PNG, JPG, or WEBP
2. Choose Size
Square Post
1080 x 1080px · 1:1 ratio
Portrait Post
1080 x 1350px · 4:5 ratio
Landscape Post
1080 x 566px · 1.91:1 ratio
Story/Reels
1080 x 1920px · 9:16 ratio
Profile Picture
320 x 320px · Square
Image resized? Post it to all 18 platforms in one click.
posterly lets you schedule posts across 18 platforms with AI-powered captions. Start with a free 7-day trial.
Instagram Post, Story and Reel sizes
- Square Post: 1080 x 1080px (1:1 ratio)
- Portrait Post: 1080 x 1350px (4:5 ratio)
- Story/Reels: 1080 x 1920px (9:16 ratio)
Frequently asked questions
What size should I resize pictures for Instagram?
Use the presets: 1080 x 1080px square post, 1080 x 1350px portrait, 1080 x 1920px Story or Reel.
Can I resize a photo for Instagram, or only a picture?
Yes. Same upload accepts PNG, JPG or WEBP.
Do I need an account?
No. Runs in the browser with no signup.
Other platform sizes
Facebook Image Sizes
- Post Image: 1200 x 630px
- Cover Photo: 820 x 312px
- Story: 1080 x 1920px
Twitter/X Image Sizes
- Post Image: 1600 x 900px (16:9 ratio)
- Header Photo: 1500 x 500px
LinkedIn Image Sizes
- Post Image: 1200 x 627px
- Cover Photo: 1584 x 396px
Tips for Better Social Media Images
- Always use the recommended dimensions for best quality
- Keep important content away from edges - platforms may crop differently on mobile
- Use high-resolution source images for best results
- Test your images on multiple devices before posting
Picture resized? Schedule it when you are ready.
Create a posterly account to queue the image across your social accounts, or connect an agent over MCP.
Related reading: Buffer alternatives 2026, Cheapest social media scheduler in 2026
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