Resize Images Online: A Guide for 2025

Social media platforms constantly update their image guidelines. Keeping up with the latest sizes is essential if you want your images to look their best everywhere. According to a December 2025 survey by Hootsuite, the recommended dimensions for several major platforms are as follows:

• Instagram: Profile photos should be 320×320 px; landscape posts 1080×566 px; vertical posts 1080×1350 px; square posts 1080×1080 px; and stories or reels 1080×1920 px.
• Facebook: Landscape images 1080×566 px, vertical images 1080×1359 px, square images 1080×1080 px and cover photos 851×315 px【619473720217336†L129-L145】.
• LinkedIn: For posts, use 1200×627 px for landscape images or 1200×1200 px for square posts.
• TikTok: Vertical videos should be 1080×1920 px.
• Pinterest: Pins are typically 1000×1500 px, following a 2:3 ratio. This size ensures your pins display well on mobile devices.
• YouTube: Thumbnails should be 1280×720 px with a minimum width of 640 px. The aspect ratio should be 16:9, which looks great across desktop and mobile devices.

When resizing images, maintaining the correct aspect ratio prevents unwanted stretching or cropping. ImageResizr supports presets for all major platforms so you can select the right dimensions with a single click.

Why use ImageResizr?

Upload your images directly in your browser, choose a preset or custom size, adjust compression and format, and download your optimized files instantly. Our AI tools take things further with smart resize, upscaling and background removal for Pro users. Check out our pricing page to see what plan suits you best.

Need more help? Visit our other blog posts for specific platform tips like resizing images for Instagram.