Resize images online by exact pixel dimensions or percentage. Keep the aspect ratio, preview the result and download a resized image directly in your browser.
JPG, PNG, WebP, GIF — Processed locally in your browser
Drop an image here or use the upload button.
Need to make an image smaller for a website, adjust a picture for a profile or prepare a graphic for a specific layout? Imagesmint's Image Resizer lets you change the width and height of an image without opening a desktop editing program. Upload your image, choose a preset percentage or enter the dimensions you need, then apply the changes and download the result.
You can resize an image proportionally to keep its original shape, or turn off the aspect-ratio option when you need precise control over width and height independently. The editor also displays the original image dimensions, file size and format, making it easier to check the changes before saving the resized file.
Images often need different dimensions depending on where they will appear. A photograph taken with a phone may be much larger than necessary for a website thumbnail, while a banner or profile picture may need to fit a specific area.
Resizing helps you prepare images for different situations without manually editing their dimensions elsewhere. Common uses include:
Keep in mind that resizing changes pixel dimensions, not necessarily the file's storage size by a predictable amount. A smaller image will often take up less space, but the final file size also depends on the output format, image content and encoding settings.
The tool offers two ways to choose your new dimensions. You can use one of the percentage presets for a quick adjustment or enter exact pixel values for more precise results.
If you do not need a specific width or height, the preset buttons are a convenient starting point. They calculate new dimensions from the image's original width and height.
For example, an image measuring 1600 × 1200 pixels becomes approximately 800 × 600 pixels at the 50% preset. Because the browser uses whole pixels, the calculated dimensions may be rounded.
These presets change the image dimensions, not its JPEG quality setting. They do not automatically apply a separate compression level.
For more control, enter the required width and height in pixels. This is helpful when a website, profile area, document or other application specifies exact dimensions.
The editor updates the other dimension automatically when Keep Aspect Ratio is enabled. This makes it easier to change the width without accidentally stretching or compressing the image vertically.
If you need different proportions, you can turn the option off and enter the width and height separately. However, changing the two dimensions independently can distort the subject, so check the preview and consider whether cropping would be more suitable.
An image's aspect ratio is the relationship between its width and height. A photograph measuring 1200 × 800 pixels has a 3:2 ratio. If you reduce its width while keeping that ratio, its height must also decrease proportionally.
Keep Aspect Ratio is enabled by default in Imagesmint's resizer. When you edit one dimension, the tool calculates the other using the original image proportions. This helps prevent faces, logos and other objects from appearing stretched or squashed.
For example, if an image is 1200 × 800 pixels and you set the width to 600 pixels while preserving the ratio, the resulting height is 400 pixels.
Turn the option off only when you deliberately need different proportions and understand how they will affect the image. If the goal is to remove unwanted areas from a picture, cropping is generally a better solution than distorting its shape. You can use the Image Cropper for that purpose.
The preview lets you inspect the resized image before saving it. This is useful for checking whether the subject still looks natural, whether small details remain visible and whether the new dimensions suit your intended use.
The summary displays the new dimensions and a percentage calculated from the new pixel area compared with the original pixel area. This percentage is a comparison of pixel counts, not a measurement of visual quality or file-size reduction.
After applying the resize, the tool displays the resulting file size. You can then decide whether the result is small enough for your intended upload or whether you need to adjust the dimensions again.
The result depends on whether you are making the image smaller or larger.
Reducing an image: Downscaling removes pixels, and the browser resamples the remaining image to the new dimensions. A moderate reduction often produces a good result, although fine text and tiny details may become less visible at very small sizes.
Enlarging an image: Upscaling creates additional pixels based on the existing image data. It cannot recover fine details that were never present in the source, so an enlarged picture may look softer or more pixelated than the original.
For the clearest result, start with a sufficiently large and sharp source image. If you only need a smaller version, avoid enlarging it again after resizing unless there is a specific reason to do so.
The file selector accepts image files supported by the browser, and the interface lists JPG, PNG, WebP and GIF as common examples. The actual formats that can be opened depend on the browser and the selected file.
The current output logic preserves PNG when the original file is identified as PNG. Other accepted images are exported as JPEG. This means a WebP, GIF or JPEG source may produce a JPG file after resizing, rather than keeping its original format.
Because JPEG does not support transparency, the tool fills the canvas with white when exporting these non-PNG images. Transparent areas in a WebP or another supported source format therefore will not remain transparent in the resulting JPEG file. Animated GIF content is also not preserved as an animation by this resizing process.
If you need to change an image into a particular format, use the Image Format Converter. If the resized image is still too large for your needs, try the Image Compressor afterward.
The tool checks that the requested width and height are positive numbers and that neither dimension exceeds 10,000 pixels. Values beyond that limit are rejected.
However, an image with dimensions close to the maximum can still require a substantial amount of memory. If the browser becomes slow or cannot finish processing a very large image, try using smaller dimensions first.
The resizing operation uses browser-side JavaScript and the Canvas API to read and process the selected image. The conversion code shown does not send the original image to a dedicated image-resizing server.
This makes the tool convenient for resizing images without a separate server-upload step. As with any browser-based tool, the webpage and its supporting scripts still need to load for the editor to work.
Upload the image, enter the desired width and height in pixels, and keep the aspect-ratio option enabled if you want to preserve the original proportions. Click Apply Resize and download the result.
Yes. Select 25%, 50%, 75% or 100%. Each preset calculates new dimensions from the original image rather than from an already resized result.
Resizing reduces the number of pixels when you make an image smaller, which can reduce the resulting file size. However, resizing and compression are different operations. For more direct control over file size, use the Image Compressor.
You can increase its pixel dimensions, but enlargement cannot restore details missing from the original. The image may become softer or less sharp, especially when enlarged significantly.
Yes. When the original image is PNG, this tool exports the resized result as PNG. For other supported source formats, the current output logic uses JPEG on a white background.
The tool allows a maximum width and height of 10,000 pixels each. Very large dimensions may still be limited by available browser memory.
Imagesmint's Image Resizer gives you a straightforward way to adjust image dimensions, maintain proportions and prepare pictures for websites, documents and everyday uploads. Choose the dimensions that fit your needs, check the preview and download the resized image when it is ready.