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Resize image

Change dimensions with or without locking the aspect ratio. All processing happens locally.

Drop files here
or click to browse - files stay on your device
Max file size: 50 MB

About this tool

Resize images to exact pixel dimensions or by percentage. Maintains aspect ratio by default and uses high-quality resampling.

Features

  • Pixel or percentage resize
  • Keep aspect ratio toggle
  • PNG, JPG, WebP output
  • Bulk processing

How to use it

  1. Drop in one or more images.
  2. Enter target dimensions.
  3. Download resized files.
🔒 100% private

Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.

Frequently asked questions

Does upscaling improve quality?

No - upscaling can only interpolate, not invent detail. Best results come from downscaling.