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Image Resizer

Resize PNG and JPEG images locally with aspect-ratio locking, format control, and high-quality resampling.

Core processing runs in your browser. Keep the tab open until downloads or copied results are complete.
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Guide

Usage, privacy, and related tools

Best for

  • Smaller website images
  • Social image dimensions
  • No-upload photo resizing

Privacy

Images are decoded, resized, previewed, and exported in your browser. The original file is not uploaded to a server.

Quick tips

  • Keep aspect ratio locked to avoid stretching.
  • Use detail recovery when downscaled photos look too soft.
  • Use PNG when you need transparency or lossless file compression.

How to use this tool

  1. Add a PNG or JPEG image.
  2. Enter the target width and height or choose a quick scale.
  3. Pick the output format and download the resized image.

Common questions

Can image resizing be completely lossless?

PNG export uses lossless file compression, but resizing changes pixel dimensions. JPEG export is always lossy, though high quality settings reduce visible artifacts.

Are my images uploaded?

No. The image resizer uses browser canvas processing and keeps files local to your device.

Related tools

Image CropperCrop images visually with an interactive selection box and rule-of-thirds gridImage Format ConverterConvert images between PNG, JPEG, and WebP — supports batch conversionImage CompressorCompress PNG, JPEG, and WebP images locally to save spaceImage to PDF ConverterConvert images (JPG, PNG) to a single PDF document