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Cuisdev

Image Resizer

Resize by pixels, percentage or preset social sizes

  • Runs in your browser
  • No sign-up
  • Free forever
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How to use the Image Resizer

  1. 1

    Add images with the Add images button, drop them onto the tool, or paste them.

  2. 2

    In the Resize section, choose how to resize. By width or height keeps proportions; Longest edge suits mixed portrait and landscape photos; Percentage scales everything evenly.

  3. 3

    For an exact size, choose Width and height or a Preset, then Fit inside, Fill and crop, or Stretch.

  4. 4

    Leave Never enlarge on to keep small images from being blown up and blurred.

  5. 5

    Compare a result, then download single files or all of them as a zip.

Features

  • Resizes up to 100 images at once by width, height, longest edge, percentage or exact size
  • Presets for Full HD, social posts, Open Graph images, headers and icons
  • Fit inside, fill and crop to the centre, or stretch to an exact box
  • Never enlarge option to protect small images
  • High quality downscaling in halving steps that keeps text and edges sharp
  • Optional compression and format conversion in the same pass
  • File names include the new dimensions, such as photo-1200x800.jpg
  • Resized in your browser; nothing is uploaded

Resizing in bulk

Cameras and phones produce images far larger than any screen needs. A 12 megapixel photo is 4000 pixels wide; a blog column shows it at 800 to 1200. Serving the original wastes bandwidth and slows the page, and many upload forms reject it outright. Resizing to the size you will actually display is the most effective optimisation there is.

This resizer applies one rule to a whole batch. Choose a width, a longest edge, a percentage or an exact box, and every image is scaled in your browser, with its proportions kept unless you choose otherwise. File names gain the new dimensions so resized copies never overwrite originals.

Exact sizes without distortion

Some places need every image at precisely the same size: product grids, social posts, thumbnails. Width and height with Fill and crop produces exactly that box by scaling each image to cover it and trimming the edges around the centre. Fit inside keeps the whole image instead, leaving it smaller than the box on one side. Both avoid the squashed look of stretching.

To crop a single image by hand or rotate it, use the Image Editor. To make the resized files smaller still, use the Image Compressor.

Frequently asked questions

Which resize mode should I use?
Use Width for images that go into a content column, such as a blog at 1200 pixels wide. Use Longest edge for a mixed batch of portrait and landscape photos, so none exceeds a limit. Use Width and height with Fill and crop when every image must be exactly the same size, such as product thumbnails.
What is the difference between Fit inside and Fill and crop?
Fit inside keeps the whole picture and its proportions, so the result may be smaller than the box in one direction. Fill and crop makes the result exactly the box size by scaling to cover it and cutting off the edges, centred. Stretch makes the exact size by distorting the image, which is rarely what you want for photos.
Will resizing make my images blurry?
Making images smaller keeps them sharp; the tool downsizes in halving steps with high quality smoothing so fine detail is averaged rather than dropped. Making images larger cannot add detail and always looks softer, which is why Never enlarge is on by default.
Does resizing reduce the file size?
Usually a lot. Halving the width and height leaves a quarter of the pixels, and file size follows. A 4000 by 3000 photo resized to 1600 pixels wide typically drops from several megabytes to a few hundred kilobytes. Turn on Compress too for an even smaller file.
Which sizes do the presets use?
Full HD 1920 by 1080, HD 1280 by 720, square post 1080 by 1080, portrait post 1080 by 1350, Open Graph 1200 by 630, X header 1500 by 500, and app icons at 512 and 256 pixels square. Combine a preset with Fill and crop to get exactly those dimensions.
Are my images uploaded?
No. Images are resized on a canvas in your browser and zipped on your device. Nothing leaves your computer, and the tool keeps working offline after the page loads.

Last updated .