Image Tools

Resize Image

Change image dimensions by exact pixels or a percentage and preview the resulting size.

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Browser-only processingYour files are processed locally in your browser and are never uploaded to our servers.

Browser-only processing

What Resize Image does

Lock the aspect ratio to avoid stretching, or unlock it when a specific width and height are mandatory.

Supported formats or input: Input: JPG, PNG and WebP. Output: a browser-generated image in the selected format.

How to use Resize Image

  1. Choose an image.
  2. Enter target width, height or percentage.
  3. Keep aspect ratio enabled when appropriate and download the resized file.

Example and processing method

Example: Resize a 2400 × 1600 image to 1200 × 800 by setting the width to 1200 with aspect ratio locked.

Canvas resampling calculates new pixels for the requested output dimensions.

Common mistakes and limitations

Common mistake: Do not confuse file size with pixel dimensions; resizing may reduce both, but compression controls file size more directly.

Upscaling cannot create genuine detail and may look soft. Browser resampling can differ slightly from desktop editors.

Privacy

Resizing happens locally; the image is not sent to Toolare.

No registrationLocal processingClear output

Related tools

Crop ImageCrop, rotate and flip images with popular aspect ratios.Compress ImageReduce JPG, PNG and WebP file sizes in your browser.Image Format ConverterConvert JPG, PNG and WebP images locally.Images to PDFCombine up to 20 images into a downloadable PDF.Social Media Image ResizerResize images for common social media placements.

Frequently asked questions

Will resizing reduce file size?

Often, especially when dimensions are reduced, but format and quality also matter.

Why does an enlarged image look blurry?

Upscaling spreads existing pixel information across a larger area without adding real detail.