Free Online Image Resizer

Resize images to exact pixel dimensions online — fast, private, no upload required.

Your images never leave your device. All resizing happens locally in your browser.

Click to upload or drag & drop your image here

Supports: JPG, PNG, WebP

Upload an image to see its dimensions.

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Resize Images for Real Output Sizes

This resizer is for jobs with an actual pixel target: Open Graph images, profile squares, marketplace uploads, thumbnails, banners, and quick production exports. It keeps the source format when possible and gives you either an exact size or a proportional resize from one dimension.

  1. Upload one image or a full batch.
  2. Check the original dimensions and choose your target size.
  3. Keep aspect ratio on for safe resizing, or turn it off for exact reshaping.
  4. Export the resized result and download one file or the full queue.

How to Use Width, Height, and Aspect Ratio

If Keep aspect ratio is enabled, changing one side recalculates the other side automatically. That is the safest mode for photos, screenshots, and anything that should not look stretched. If you turn it off, the tool will force the exact width and height you entered even if that changes the shape of the image.

You can also fill in only one dimension. The missing side will be calculated from the original proportions, which is useful when you only know the target width for a CMS or the target height for a content slot.

Use Presets for Common Jobs

The built-in presets cover the sizes people use repeatedly: 1200 x 630 for social previews, 1080 x 1080 for square posts, 1920 x 1080 for HD output, and 512 x 512 for source artwork that will later be turned into icons or app assets.

What Happens to Quality When You Resize

Downscaling usually looks clean because the browser is reducing detail. Upscaling is different: the file can be made larger in pixels, but detail that was never in the original cannot be recreated. If you enlarge a small image too far, it will look softer or more pixelated no matter which tool you use.

Batch Resizing for Repeated Tasks

Batch mode applies the same target dimensions to every file in the queue. That is useful for preparing a consistent set of card images, author avatars, thumbnails, or product uploads without resizing each file manually.

Frequently Asked Questions

  • Can I resize without distorting the image?

    Yes. Leave Keep aspect ratio enabled and the missing side will update automatically to preserve the original shape.

  • Can I enter only width or only height?

    Yes. If aspect ratio is enabled, the tool calculates the other dimension for you from the source image.

  • Will resizing change the file format?

    No. JPG stays JPG, PNG stays PNG, and WebP stays WebP. This tool changes dimensions, not format.

  • Can I batch resize several images at once?

    Yes. Upload multiple files and the same target dimensions will be applied to every item in the queue.

  • Can I make an image bigger than the original?

    Yes, but enlarging does not create new real detail. The output can be larger in pixels, but it may look softer or more pixelated.