Image Resizer

Resizes images. Four strategies: by width, by height, by percentage, or fixed size. Keeps aspect ratio automatically.

What it does

Use this to shrink phone photos to web size, scale small images up, normalise all your images to the same width, or fit social-media format dimensions.

How to use

  1. Drag images into the list.
  2. Pick a Resize Mode.
  3. Enter a Target Value (pixels or percentage depending on the mode).
  4. Optionally pick an Output Format (Original, JPG, PNG, WebP, TIFF, BMP).
  5. Click Run.

You get one resized copy per image.

Resize modes

ModeWhat it does
By WidthWidth is set to your pixel count, height is auto-scaled to match.
By HeightHeight is set to your pixel count, width is auto-scaled.
PercentageThe whole image scales by the percentage you set (50 = half, 200 = double).
Fixed SizeImage is forced to your width x height. Aspect ratio is not preserved.

Output format

  • Original: Format does not change, JPG stays JPG.
  • JPG / PNG / WebP / TIFF / BMP: Convert format while resizing.

Examples

Resize photos for web at 1920 px wide: Add the photos, By Width, 1920, Output Original, run.

Half-size for social media: Add the images, Percentage, 50, run. Every dimension halves.

1080x1080 Instagram square: Add square images, Fixed Size, 1080x1080, run. Already-square images are fine, others will distort.

Phone wallpaper at 2400 px tall: Add the images, By Height, 2400, run. Height 2400, width is scaled to match.

Watch out

  • Fixed Size does not keep aspect ratio, images may squash or stretch. Use Image Positioner instead when dimensions differ.
  • Upscaling an image (making it bigger than the source) reduces quality, no real detail is added. For smart upscaling use Image Upscaler.
  • TIFF and BMP are not supported as input, only as output.
  • Very low percentages (below 10) lose almost all detail.
  • Very large output sizes (8000x8000+) blow up the file.

License

Free tier has a monthly resize cap. Office plan removes it.