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Social Media Image Resizer

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+ Click or drag image, or paste URL

Free Social Media Image Resizer - Perfect Sizes for Instagram, Facebook, YouTube & More

Resize images for any social media platform with imgBig.com's free social media image resizer. Get the exact dimensions for Instagram posts, stories, and reels, Facebook cover photos and posts, Twitter/X headers and posts, YouTube thumbnails and channel art, LinkedIn profiles and posts, and Pinterest pins. No more blurry, cropped, or awkwardly sized images on your social profiles. Choose your platform, select the preset size, pick a fit mode (cover, contain, or stretch), and resize instantly. Add a custom background color when using contain mode to fill empty space. Works with all image formats and processes everything in your browser for speed and privacy.

How to Resize Images for Social Media

  1. Upload your image by clicking, dragging, or pasting a URL
  2. Select your platform: Instagram, Facebook, Twitter/X, YouTube, LinkedIn, or Pinterest
  3. Choose a preset size (e.g., Instagram Post, Facebook Cover, YouTube Thumbnail)
  4. Select fit mode: Cover (fills and crops), Contain (fits with background), or Stretch
  5. Click "Resize" and download your perfectly sized social media image

Frequently Asked Questions

What is the best Instagram post size?

Instagram supports three post sizes: Square (1080x1080px), Portrait (1080x1350px), and Landscape (1080x566px). Portrait takes up the most screen space and gets the most engagement.

What size should my Facebook cover photo be?

Facebook cover photos should be 820x312px on desktop and 640x360px on mobile. Our tool provides the optimal size that works well on both.

What is the difference between Cover and Contain fit modes?

Cover fills the entire area by cropping excess — best for photos. Contain fits the whole image with a background color — best when you can't crop any content.

Supported Social Media Sizes