Resize images to exact pixel dimensions or by percentage, with aspect ratio lock to prevent distortion.
Enter a target width or height in pixels, and with aspect ratio locked (the default), the other dimension adjusts automatically to keep your image proportional. Unlock it only if you need an exact width and height that doesn't match the original shape.
Switch to percentage mode for quick proportional scaling — 50% halves both dimensions, 200% doubles them. Percentage mode always preserves the original aspect ratio.
Aspect ratio is the proportional relationship between an image's width and height. Locking it means changing one dimension automatically adjusts the other to match, preventing the stretched or squashed look that happens when width and height are changed independently.
Yes, but the pixels being displayed at the larger size don't actually exist in the original — the tool has to interpolate new pixels, which usually makes enlarged images look softer or blurrier than the source.
Resizing by pixels sets an exact target width or height — useful when a platform requires specific dimensions. Resizing by percentage scales the image proportionally relative to its current size — useful for quick, general size reduction.
Making an image smaller generally preserves quality well. Making an image significantly larger than its original size can reduce sharpness, since new pixel detail has to be estimated rather than captured from the original.
No. All resizing happens directly in your browser using the Canvas API. Your images are never uploaded to a server or stored anywhere.