Image Resize Tool
Resize PNG, JPEG, or WebP images in your browser.
Image resizing basics for web performance
Image resizing changes pixel dimensions (width and height) to fit a target use case like profile photos, blog covers, thumbnails, product listings, or social media cards. Serving correctly sized images improves load time, user experience, and SEO because search engines consider page speed in ranking signals.
A common rule is to keep the aspect ratio locked unless you intentionally want a stretch effect. For example, a 2400×1600 photo resized to 1200×800 preserves composition and avoids distortion. Percentage resize presets like 75%, 50%, and 25% are useful for quick optimization without manual math.
For best quality, downscale from the original source and avoid repeated resize cycles. If your target is web display, combine resize with modern compression settings so you reduce both dimensions and file size. Smaller files mean faster Largest Contentful Paint (LCP) and better Core Web Vitals.