Image Resizer Online - Change Pixels & Aspect Ratio

Pixel-Perfect Online Image Resizer

Accurately adjust image width and height in pixels. Lock aspect ratios to prevent distortion and preserve crisp details across all display densities.

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Upload an image to inspect its current pixel dimensions

Width (Pixels):

Height (Pixels):

Lock aspect ratio (Preserve proportions)

Instagram / Facebook Post: 1080 × 1080 px (Square 1:1) or 1080 × 1350 px (Portrait 4:5)
YouTube Video Thumbnail: 1280 × 720 px (Standard 16:9 widescreen, min width 640 px)
Facebook Page Cover: 820 × 312 px (Desktop) / 640 × 360 px (Mobile)
Twitter / X Header Banner: 1500 × 500 px (3:1 aspect ratio)