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Image Tools6 formats supported

Free online image resizer

Use this free online image resizer to change image dimensions in your browser. Resize JPG, PNG, and WebP files by pixels, percentage, or presets without uploading them.

  • Resize by exact pixel dimensions
  • Scale by percentage (50%, 200%, etc.)
  • Lock or unlock aspect ratio

Supported formats

JPGPNGWebPGIFBMPTIFF

Set resize options

Pick your target dimensions and export format before processing.

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Drag & drop Image Resizer

or click to browse

Supported: JPG, PNG, WebP, AVIF

How It Works

A simple three-step flow from upload to download.

  1. 1

    Upload your image to resize.

  2. 2

    Enter target dimensions or choose a preset.

  3. 3

    Resize and download the adjusted image.

Features

Key capabilities surfaced as quick-scan cards.

  • Resize by exact pixel dimensions

  • Scale by percentage (50%, 200%, etc.)

  • Lock or unlock aspect ratio

  • Preset sizes for social media platforms

Related Tools

Nearby workflows people often use before or after this image tool.

Image Compressor

JPG · PNG · WebP

Optimize and compress images to reduce file size while maintaining quality.

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Image Converter

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Image Crop

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Image Watermark

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Add a custom text watermark to any image. Control position, opacity, color and size.

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How to resize images online

  1. 1

    Upload your image

    Choose an image from your device or drag it into the resizer. Common formats like JPG, PNG, and WebP are supported.

  2. 2

    Set dimensions or choose a preset

    Enter exact width and height, resize by percentage, or use a preset for common social and web sizes. This helps when you need a specific layout size, upload requirement, or aspect ratio.

  3. 3

    Resize and download

    Run the resize and download the updated image when it is ready. The process happens in your browser, so you can resize images online without uploading them to a remote service.

Understanding the settings

If you want to avoid distortion, keep the aspect ratio locked so the image scales proportionally. Downscaling usually looks clean and is a good way to make large images easier to upload or faster to load. Upscaling can make images softer because the browser has to invent extra pixels, so resizing larger is best kept modest unless you plan to use a dedicated upscaling workflow. If your goal is a smaller file, combining resizing with compression often works better than using either one alone.

Compatibility, privacy, and limitations

Browser and device support

These tools are designed for modern browsers. Actual speed and maximum practical file size depend on device memory, processor speed, and how much media your browser can safely keep in memory during processing.

Format safety

If you are unsure which output to choose, start with broadly compatible formats such as JPG, PNG, WebP, and similar mainstream formats. They are usually the safest fallback for everyday sharing and playback.

Privacy explanation

This tool keeps image work on your device using browser-native processing where possible, which is useful for screenshots, photos, and design assets that you do not want to upload to an external server.

Things to keep in mind

  • Very large files can take longer to inspect and process because browsers have less memory headroom than native desktop editors.
  • FFmpeg-based browser processing is flexible, but long or high-resolution media can still be slower than a native desktop workflow.

Frequently asked questions