Image Resizer

Resize images to exact dimensions, right in your browser. Set a custom width and height, lock the aspect ratio to avoid stretching, or pick a popular preset — then preview and download your resized image as PNG or JPEG.

How to use

1. Choose an image, then note its original size shown after loading.
2. Enter a width and height, or click a preset such as 1080 x 1080.
3. Keep the aspect-ratio lock on to avoid stretching, or turn it off for exact custom sizes.
4. Click Resize image, check the preview, then download PNG or JPEG.

How do I resize an image without stretching it?

Keep the aspect-ratio lock on and change only the width or the height. The other dimension updates automatically to match the original proportions, so circles stay round and faces are not stretched. Turn the lock off only when you deliberately need a different shape.

What size should I use for social media posts?

Square 1080 by 1080 pixels works well for most feed posts, while 1920 by 1080 suits wide banners and video covers. Use the preset buttons for these common sizes, then check the preview before downloading, since each platform may crop images differently.

Are my images uploaded when I resize them?

No, resizing happens entirely in your browser. The file is read locally and drawn to a canvas at your chosen dimensions, then exported for download. Nothing is sent to a server, so your photos stay private on your own device throughout the process.

Should I download PNG or JPEG after resizing?

Choose PNG for graphics, logos and images with sharp text or transparency, because it preserves crisp edges. Choose JPEG for photographs, because it produces much smaller files with little visible loss. The preview helps you judge quality before you download either format.

Related tools

Image Compressor to shrink the resized file, Image Converter JPG PNG WebP to change its format, and YouTube Thumbnail Downloader for video cover images.