Resize images to different dimensions with aspect ratio preservation and multiple output formats.
Discover our collection of free online tools for developers, designers, and power users
Whether you need a 1080×1080 Instagram square, a 1280×720 YouTube thumbnail, or a specific pixel size for a web project — set the exact dimensions, lock the aspect ratio, and download in seconds. All processing happens in your browser using the Canvas API, so your photos never leave your device.
Use PNG or WebP for lossless output, or JPEG at 90–95 quality. Reducing image dimensions never loses quality — only enlarging beyond the original size reduces sharpness.
Resizing changes the pixel dimensions (width × height). Compression reduces file size by discarding data. You can do both: resize to smaller dimensions then compress — the combination achieves the greatest file size reduction.
Yes. Upload multiple images and apply the same resize settings to all of them at once in batch mode.
No. All resizing happens entirely in your browser using the Canvas API. Your images never leave your device.