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JPG, PNG, WebP, GIF, BMP · Up to 50 MB
Image Resizer resizes images to exact pixel dimensions or percentage scales using the Canvas API, supports aspect ratio lock (newWidth = newHeight × origAspect), 15 social media presets, and batch resize with JPG, PNG, or WebP output.
Image Resizer is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
Resizing uses the Canvas API: canvas.drawImage(img, 0, 0, targetW, targetH). Aspect ratio lock: otherDimension = (newValue / originalDimension) × otherOriginal. Social media presets are fixed pixel dimensions. Scale mode: targetDimension = Math.round(originalDimension × percent / 100).
Yes — upload multiple files and resize them all to the same dimensions in one click.
Slight quality loss only occurs if you also reduce to JPG with low quality settings. PNG resize is lossless.
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