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Image Resizer

Resize images to exact pixel dimensions or by percentage. Lock aspect ratio for proportional scaling.

Current scope

This tool currently processes one image at a time in your browser. The current file limit is 20MB. This statement covers the current /tools image flow, including poster-prefilled entries, not every feature on poster.sh.

Drag & drop an image here, or click to browse

Supports PNG, JPG, WEBP

Max file size: 20MB

How to resize an image

  1. 1

    Upload your image

    Select the image you want to resize.

  2. 2

    Set dimensions

    Enter exact pixels, use a scale preset, or adjust width/height with the aspect ratio lock.

  3. 3

    Download the resized image

    Save the image at your specified dimensions.

Image Resizer FAQ

Can I resize to exact pixel dimensions?

Yes. Enter the exact width and height in pixels. Toggle the aspect ratio lock to resize freely or maintain proportions.

What scale presets are available?

Quick presets for 25%, 50%, 75%, 150%, and 200% scaling. Click any preset to instantly set the target dimensions.

Will resizing reduce image quality?

Upscaling may show some softness. Downscaling preserves quality well. The output uses the same format as your input.

Is this tool free and private?

Yes. Resizing happens entirely in your browser. Your images never leave your device.

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