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toolwise

Resize Image

Change image width and height in pixels or by percentage.

Your files never leave your device.

When to use it

Resize Image changes the width and height of pictures in pixels. Use it when a website, marketplace or form asks for a specific size (for example “at least 1080 px wide” or “1200 × 628”), when photos are too large to email, or when you want a set of product photos or blog images to match. Making an image smaller in pixels also makes the file much smaller.

How to resize images

  1. Tap Choose images, or drag JPG, PNG or WebP files onto the box. You can resize several at once.
  2. Choose Resize by:
    • Pixels: type a Width or Height, or tap a common width such as 1920 px or 1080 px.
    • Percentage: drag the Scale slider (5 to 200%). The new size is shown under it.
  3. Leave the link button on to keep the aspect ratio, so the picture isn’t stretched.
  4. Pick a format under Save as, or keep Same as original.
  5. Press Resize image, then Download. Several images come as one ZIP file.

A worked example

An online shop needs product photos 1080 px wide. Your three photos are 4032 × 3024 (landscape), 3024 × 4032 (portrait) and 4000 × 4000 (square). Choose all three, tap the 1080 px chip and press Resize image. You get 1080 × 810, 1080 × 1440 and 1080 × 1080, each in its original proportions and typically 150 to 300 KB instead of 3 to 6 MB.

Common sizes

  • Full HD screens and slideshows: 1920 px wide.
  • Website content images: 1200 to 1600 px wide.
  • Instagram posts: 1080 px wide.
  • Email attachments: 1280 px is plenty to view on any screen.
  • Thumbnails and avatars: 300 to 500 px.

Tips

  • Resize by width for web pages, since layouts are usually limited by width.
  • Use Percentage to shrink a batch of different-sized images by the same amount.
  • Keep PNG for logos and screenshots, and JPG or WebP for photos.
  • Crop first if you need an exact shape, then resize. That avoids stretching.

Common mistakes

  • Turning off the aspect ratio lock by accident, which leaves faces and products looking stretched. If the hint under the fields says the ratio is free, turn the link back on.
  • Enlarging small images for print. A 600 px image blown up to 3000 px will look blurry; find a larger original instead.
  • Saving resized photos as PNG, which can make them bigger than before.

Private by design

Images are resized in your browser and never uploaded.

Need an exact shape? Use Crop Image first. To shrink file size further, try Compress Image, or hit a target like 100 KB with Compress Image to KB.

Frequently asked questions

Will resizing stretch or squash my photo?

Not while the link button between Width and Height is on (it is by default). Then changing one side adjusts the other automatically. Turn it off only if you really need an exact width and height, for example 1200 × 1200 for a square slot.

Can I make an image bigger?

Yes, up to 200% in Percentage mode or by typing larger pixel sizes. The browser smooths the enlarged image, but it can't invent new detail, so big enlargements look soft.

Can I resize several images to the same width?

Yes. Choose all the images at once and set the width. Each keeps its own proportions, so portrait and landscape photos both come out the right shape.

Is there a maximum size?

The result can be up to 16 megapixels (for example 4000 × 4000). Larger sizes are too much for many phones and browsers to handle reliably.

What's the difference between resizing and compressing?

Resizing changes the number of pixels, which also makes the file smaller. Compressing keeps the pixels but saves them more efficiently. For the smallest files, do both, or use Compress Image with a maximum size.