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Resize Images Online

Resize images to exact pixel dimensions or a percentage, with optional aspect-ratio locking.

Input:
JPG, PNG, WEBP, AVIF, BMP, GIF
Output:
JPG, PNG, WEBP
Max size:
50 MB
Runs:
In your browser (no upload)

What the Image Resizer does

Change the pixel dimensions of JPG, PNG, WebP, AVIF, BMP and GIF images, one at a time or up to 20 at once. Resize to exact pixel sizes for social media, email or web pages, or scale by percentage, and download the results individually or as a ZIP.

Options

  • Resize by pixel dimensions or by percentage (1–400%).
  • Keep aspect ratio fits the image inside the width and height you enter without distortion.
  • Output format (same as input, JPG, PNG or WebP) and quality for lossy formats.

Good to know

Animated GIFs are resized as a single still frame here; use the GIF Resizer to keep the animation.

How to use the Image Resizer

  1. 1

    Drag your JPG, PNG, WEBP, AVIF, BMP, GIF file into the upload area, or click it to browse your device.

  2. 2

    Adjust the options to suit your needs — the defaults work well for most files.

  3. 3

    Click “Run Image Resizer” to start processing.

  4. 4

    Preview the result, then download it. Batch results can be downloaded together as a ZIP.

Supported formats

  • JPG (JPEG) is a lossy format ideal for photographs. It has no transparency and is supported everywhere. More about the JPEG / JPG format.
  • PNG is a lossless format that supports full transparency. Best for screenshots, logos and graphics with sharp edges. More about the PNG format.
  • WebP is a modern format from Google supporting lossy and lossless compression plus transparency, typically 25–35% smaller than JPG. More about the WebP format.
  • AVIF is a next-generation format based on the AV1 codec, offering excellent compression and HDR support. More about the AVIF format.
  • BMP is an uncompressed Windows bitmap format. Files are large and rarely needed on the web.
  • GIF supports simple animation and up to 256 colors per frame. It is universally supported but produces large files. More about the GIF format.

Frequently asked questions