How to Resize Images for Social Media: Complete 2026 Guide

Every social media platform has its own preferred image dimensions. Post a photo at the wrong size and it gets cropped awkwardly, stretched, or compressed into a blurry mess. This guide gives you the exact pixel dimensions for every major platform in 2026 and shows you how to resize quickly.

Instagram Image Sizes

Instagram is the most dimension-sensitive platform. Getting sizes right here makes a noticeable difference in how your content appears in the feed.

• Square post: 1080 × 1080 px (1:1)
• Portrait post: 1080 × 1350 px (4:5) — takes up the most feed space
• Landscape post: 1080 × 566 px (1.91:1)
• Story / Reel: 1080 × 1920 px (9:16)
• Profile picture: 320 × 320 px
• Carousel: 1080 × 1080 px or 1080 × 1350 px (all slides must match)

Pro tip: The 4:5 portrait ratio occupies the most screen real estate in the feed, which tends to drive higher engagement.

Facebook Image Sizes

• Feed post: 1200 × 630 px
• Story: 1080 × 1920 px
• Cover photo: 820 × 312 px (desktop) / 640 × 360 px (mobile)
• Profile picture: 170 × 170 px (displays as circle)
• Event cover: 1200 × 628 px
• Link share thumbnail: 1200 × 630 px

Twitter / X Image Sizes

• In-stream image: 1600 × 900 px (16:9)
• Single image post: 1200 × 675 px
• Two images: 700 × 800 px each
• Header photo: 1500 × 500 px
• Profile picture: 400 × 400 px

LinkedIn Image Sizes

• Feed post: 1200 × 627 px
• Article cover: 1200 × 644 px
• Company page cover: 1128 × 191 px
• Profile picture: 400 × 400 px
• Profile background: 1584 × 396 px

TikTok Image Sizes

• Video thumbnail: 1080 × 1920 px
• Profile picture: 200 × 200 px

Pinterest Image Sizes

• Standard pin: 1000 × 1500 px (2:3)
• Long pin: 1000 × 2100 px
• Square pin: 1000 × 1000 px
• Profile picture: 165 × 165 px

How to Resize for Any Platform

1. Open the Image Resizer on Browser Image Converter.

2. Upload your photo.

3. Enter the target width and height from the tables above.

4. Choose whether to crop or fit. Cropping fills the exact dimensions; fitting scales the image to fit within them.

5. Download the resized image and upload it to your platform.

For batch work, the Bulk Processor lets you resize an entire folder of images to the same dimensions in one pass.

Tips for Better Social Media Images

• Start with the highest resolution source you have. Resizing down preserves quality; resizing up creates blur.
• Use the 4:5 ratio on Instagram for maximum feed presence. It is the tallest ratio Instagram allows in the main feed.
• Design for mobile first. The vast majority of social media consumption happens on phones. Check how text and details look at phone screen size.
• Keep important content away from edges. Platforms sometimes crop a few pixels from each side, especially on profile pictures displayed as circles.
• Compress after resizing. Use the Image Compressor at quality 80–85 to keep file sizes small without visible loss. Smaller files upload faster and may avoid platform re-compression.

What Happens When You Upload the Wrong Size

When your image does not match the platform's expected ratio, one of two things happens. The platform either crops it automatically, cutting off parts of your image you may want visible, or it adds letterboxing (black or white bars) around the edges. Neither looks professional. Taking thirty seconds to resize before posting avoids both problems.

Conclusion

Keeping a cheat sheet of social media dimensions saves time and makes your content look polished. Bookmark this page, open the Browser Image Converter Image Resizer when you need it, and resize directly in your browser with no software to install. Your followers will notice the difference.