SmartImage Tools

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Resize Image.

Resize by pixels or percentage — control proportions and enlargement in your browser.

Your workspace

Processed on your device
YOUR IMAGESLocal files

Bring your images in.

Drag and drop your files here, or choose from your device.

Original synthetic practice images · created on your device
JPGPNGWebP

20 images · 50 MB each · 150 MB combined · up to 32 megapixels

    Before you download
    • Check both dimensions in the result row.
    • Apply changed settings before downloading.
    • Use 100% preview to check text and fine edges.
    Image files stay on your device Works in your browser

    METHOD & PRACTICAL GUIDANCE

    Get a result you can use.

    Use pixels to set the canvas.

    Enter the width or height your destination requires. With the aspect ratio locked, the other side follows the original proportions. For a 2400 × 1600 photo, choosing a width of 1200 gives a height of 800. Unlocking the ratio can stretch the subject, so use it only when that distortion is intended.

    Resize or crop?

    Resizing changes pixel dimensions. Cropping removes part of the frame. If a wide image must become square, crop it or place it on a square social canvas rather than stretching it. A print request also needs physical dimensions and PPI; the print calculator helps translate those requirements into pixels.

    Inspect the downloaded result.

    Reducing dimensions discards detail. Enlarging with an ordinary resizer interpolates pixels and does not reveal information missing from the source. Check text and fine edges at the output’s actual size. For batches, the same target settings are applied to every image, so review images with different proportions.

    Keep your full-size original separately. A resized image is a new export and does not modify the file on your device. How we document our tools

    A PRACTICAL EXAMPLE

    Know what a useful result looks like.

    Fit an upload dimension requirement without stretching a photograph.

    Try this workflow

    Start with
    A 1200 × 800 landscape image.
    Set up
    Set width to 600 px, leave height blank, keep proportions locked.
    What to expect
    The result is 600 × 400 px. With enlargement disabled, a source smaller than the requested box keeps its dimensions.

    Check before using the result

    • Check both dimensions in the result row.
    • Apply changed settings before downloading.
    • Use 100% preview to check text and fine edges.

    When the result needs work

    Entering both sides with proportions locked defines a bounding box. Unlocking permits distortion. Percentage mode scales each image from its own source dimensions.

    Technical referencesMDN: drawing and scaling images (opens a new tab)

    Examples illustrate specific inputs and settings. Actual output size and appearance depend on your file and browser. Practice images are synthetic; they do not contain personal data.

    GOOD TO KNOW

    A few useful answers.

    More help

    How do I resize an image?

    Drop your images in, type a target width and/or height (or pick a preset), and download. Leave aspect ratio locked and set just one dimension to scale proportionally.

    Does resizing keep the aspect ratio?

    Yes by default — set one dimension and the other is calculated to preserve proportions. Unlock the ratio to stretch to exact width and height.

    Are my images uploaded anywhere?

    No. Resizing happens entirely in your browser via the Canvas API. Image files are not uploaded. Processing metadata may be recorded; see our privacy policy.

    Can I resize many images at once?

    Yes. Drop in a batch, resize them all to the same target, and download them together as a ZIP.