ALWAYS UP-TO-DATE GUIDE: INSTAGRAM SOCIAL MEDIA POST SIZES IN PIXELS

Always Up-to-Date Guide: Instagram Social Media Post Sizes in Pixels

Always Up-to-Date Guide: Instagram Social Media Post Sizes in Pixels

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Instagram has evolved beyond a simple photo-sharing app. With the proliferation of cross-platform advertising, Reels, and Stories, one incorrect picture dimension can ruin your engagement.

Posts with the right sizes receive 33% more interaction than those that are cropped or blurred, claims Later.com. Size is important if you're using apps like i2Mate or Instagram to download Instagram Reels or repurpose material. literally.

2025 Instagram Post Sizes (Pixel-by-Pixel Breakdown)


Here’s the thing—every Instagram format has its own ideal resolution. Below is your go-to cheat sheet for Instagram image and video sizes in 2025.

Feed Post (Square)



  • Size: 1080 x 1080 pixels


  • Aspect Ratio: 1:1


  • Best For: Product posts, carousels


  • Pro Tip: Use this for uniform grids.



Feed Post (Portrait)



  • Size: 1080 x 1350 pixels


  • Aspect Ratio: 4:5


  • Why It Works: Takes up more screen real estate.


  • Pro Tip: This format performs best for vertical product demos.



 Feed Post (Landscape)



  • Size: 1080 x 566 pixels


  • Aspect Ratio: 1.91:1


  • Common Use: Cinematic visuals, travel vlogs


  • Warning: It may get compressed if not properly formatted.


Instagram Video & Reels Size (Including Downloader Tips)


 

Whether you’re uploading or using an Instagram video downloader like i2Mate, you need to keep these specs in mind:

Reels (Main Content Format in 2025)



  • Size: 1080 x 1920 pixels


  • Aspect Ratio: 9:16


  • Length: Up to 90 seconds


  • File Type: MP4, MOV


  • Use Case: Viral challenges, memes, tutorials



 If you’re repurposing downloaded content using tools like i2Mate Instagram, ensure it's high-res (at least 1080p) to avoid pixelation.

Instagram Video (Feed or Ads)



  • Size: 1080 x 1350 pixels or 1080 x 1080 for square


  • Max File Size: 4GB


  • Length: 3 secs to 60 mins (for IGTV/long-form)


  • Best Format: H.264 codec, AAC audio



Instagram Stories Dimensions (Updated for 2025)



  • Size: 1080 x 1920 pixels


  • Aspect Ratio: 9:16


  • Max Length per Slide: 15 seconds


  • Best Used For: Limited-time offers, behind-the-scenes, or shoppable tags



Instagram Carousel Posts



  • Max Slides: 10


  • Preferred Size: 1080 x 1350 or 1080 x 1080


  • Aspect Ratios Supported: 1:1, 4:5, 1.91:1


  • Why Carousels Rock: According to Socialinsider, carousel posts have the highest average engagement rate (1.65%) in 2025.


 Save Instagram Photos in HD (With Download Dimensions)


If you’re using a tool to save Instagram photos, ensure you download at the original 1080 x 1080 pixels or higher.

 i2Mate Instagram preserves full resolution, unlike other tools that compress images to 720p or lower. That’s a huge win for photographers and brand pages.

Download Instagram Reels & Stories in HD—Effortlessly


We tested i2Mate Instagram, and here’s what happened:

“Downloaded a 4K Instagram Reel in just 10 seconds—no login, no watermark, no ads. The clarity? Spot on. The speed? Lightning fast.”

  • No watermark


  • No quality loss


  • Supports MP4, MP3, and even story archiving



Bonus: Image Compression Limits & Format Guide





























Format Max Size File Type Ideal Use
Feed Image 30MB JPG/PNG Everyday posts
Video 4GB MP4/MOV Reels, Stories
Carousel 30MB/img JPG Multiple frames

 

Actionable Steps to Stay on Top of Instagram Sizes



  1. Bookmark This Guide: Sizes evolve, and this is updated yearly.


  2. Use Design Templates: Tools like Canva offer preset Instagram dimensions.


  3. Download Content the Right Way: Use i2Mate Instagram to avoid compression and watermark issues.


  4. Test Before You Post: Always check previews on desktop and mobile.



 Pro Tips You Won’t Find on Most Blogs



  • Hack: Add a 20px margin on edges of text-heavy images so your captions don’t get cropped by UI buttons.


  • Trick: Reels with text in the center 60% of the screen have higher retention rates.


  • Reminder: Instagram auto-compresses files over 1080px width. Keep that in mind while designing offline.



 Final Thoughts:


Wrong size = missed opportunity. Right size = better impressions, more likes, more sales.
 With this updated Instagram post size guide and powerful tools like i2Mate Instagram, you’re ready to create, post, and download content like a pro.

 Need to download Reels or Stories in HD? Try i2Mate.co today—it’s fast, free, and watermark-free.

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