Every platform has its own avatar size and the number that a profile photo looks sharp at varies more than most people expect. A headshot that looks great on one platform can appear blurry, badly cropped or stretched on another because the display dimensions are different. The common thread across almost all avatar requirements is that the image needs to be square and needs to be prepared at or above the display resolution the platform uses. Preparing a clean centered square image at the right size before uploading is the one step that makes avatars look consistent and professional across every account.
How to Resize an Image to Avatar Size
Enter the same value in both the width and height fields for a square output and turn the Maintain Aspect Ratio checkbox off. The exact number depends on the platform. Common avatar sizes are 32x32 for small UI icons, 64x64 for compact interface avatars, 128x128 for standard forum and game avatars, 200x200 for social media profile photos and 400x400 or larger for platforms that store at high resolution before scaling down.
The most important step before resizing is centering the subject. Avatars are displayed small and a subject that is off-center or partially cut off looks worse at small display sizes than it does in the original. A tight portrait or logo centered with some breathing room around it holds up well across different display sizes. For multiple avatars across different platforms, upload them all at once and download as a ZIP when done.
Common Avatar Sizes by Platform
Discord: 512x512 recommended, displayed as a circle. Twitter: 400x400 recommended, displayed as a circle. Facebook: 180x180 stored, displayed at various smaller sizes. LinkedIn: 400x400 minimum, 800x800 recommended. Instagram: 320x320 stored. GitHub: 240x240 displayed on profile pages. Steam: 184x184 displayed on profile, 64x64 in game. Forum platforms vary but 128x128 to 200x200 covers most standard forum avatar displays.
Output Format for Avatars
PNG is the safest choice for avatars across most platforms. It supports transparency for avatars that need a custom or transparent background and keeps edges sharp at small display sizes. JPEG works fine for standard portrait photos on platforms that do not require transparency. When in doubt, PNG at the appropriate square dimension covers the broadest range of platform requirements without any loss of quality or transparency support.