Mar 1, 2025
The Ultimate Guide to Instagram Image Sizes for Posts, Reels and Stories.
Crafting visually stunning Instagram content requires precision—every post, Story, and Reel demands specific dimensions to look professional. But manually resizing content for each format is time-consuming. Enter Stella, your AI Marketing solution to automate the entire content creation flow. With Stella, you can say goodbye to tedious resizing and focus on creativity. Ready to streamline your workflow? Sign up for Stella today and let AI handle the heavy lifting.

1. Instagram Feed Post Sizes
Recommended Dimensions: 1080 x 1080px (Square), 1080 x 1350px (Portrait), 1080 x 566px (Landscape).
Pro Tip: Consistency is key! Use the same aspect ratio for a cohesive grid.
How Stella Helps:
Stella automatically optimizes your images for all feed formats. Upload one image, and Stella resizes it for squares, portraits, and landscapes while preserving quality. No more manual cropping!
Try Stella Free - Your first 30 posts are on us!
2. Instagram Story Sizes
Recommended Dimensions: 1080 x 1920px (9:16 aspect ratio).
How Stella Helps:
Stella’s AI instantly adjusts your content to fit Stories, adds text overlays, and even suggests trending templates. Bonus: It repurposes existing posts into Stories, saving you hours.
Book a Demo to see how Stella transforms your Stories in seconds.
3. Instagram Reels & Video Sizes
Recommended Dimensions: 1080 x 1920px (9:16).
Pro Tip: Use bold captions - 70% of users watch without sound.
How Stella Helps:
Stella auto-resizes videos for Reels, adds subtitles, and recommends optimal posting times. Plus, it reformats Reels into TikTok or YouTube Shorts with one click.
4. Carousel Posts & Thumbnails
Recommended Dimensions: 1080 x 1080px (each slide).
How Stella Helps:
Upload your images once, and Stella generates a carousel with seamless transitions and resized thumbnails. It even A/B tests designs for higher engagement.
5. How Stella Automates Your Entire Content Workflow
Why juggle 5 apps when Stella does it all?
Auto-Resizing: Upload one image, and Stella adapts it to every Instagram format.
Cross-Platform Repurposing: Turn a Reel into a Story, a post into a Pinterest pin, and more.
Smart Scheduling: Stella posts content at peak times and tracks performance.
Case Study: A beauty brand saved 15 hours/week by using Stella to resize and schedule 50+ posts monthly.
Ready to Ditch Manual Resizing?
Stella isn’t just a tool—it’s your AI content partner. Whether you’re a solo creator or a marketing team, Stella simplifies creation, resizing, and publishing.
Get Started Now:
Sign Up for Stella - Free 7-day trial.
Book a Demo - See Stella in action.
Conclusion:
Perfect Instagram sizing shouldn’t require a design degree. With Stella, you get pixel-perfect posts, Stories, and Reels - every time. Automate your workflow, reclaim your time, and watch engagement soar.
P.S. New users get 20% off their first month with code STELLA20. Claim Your Discount →
Stella – Where AI Meets Effortless Content Creation.
www.mystellaai.com
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Reach us at team@mystellaai.com