LocalMini

Image Tools

Resize Image

Resize an uploaded image by percentage scale or exact pixel dimensions, keep the original aspect ratio when needed, tune JPEG quality when useful, and export a PNG or JPEG without sending the file to a server.

Local file toolActive

Canvas-based resizing in your browser.

Image resizer

Resize an image in your browser

Upload an image, pick a percentage scale or enter the exact pixel size you need, then preview and download the resized file as PNG or JPEG. JPEG quality and file name controls are available before export.

PNG and JPEG export uses browser canvas. Your image stays on this device.

Fit presets keep the whole image visible. They resize within the named box and do not crop or add padding.

Preview
No resized image yet

Upload an image and resize it to see the downloadable preview here.

Local processing: Your file is processed in your browser. It is not uploaded to our server.

When to resize an image

Use this tool when a website, form, marketplace, blog, or social post needs a specific image size. It is useful for product photos, profile images, hero graphics, thumbnails, application uploads, and quick layout assets.

Scale presetsExact pixelsAspect ratio lockJPEG qualityCustom file namePNG exportJPEG export

Common web and social image sizes

The quick preset buttons include scale options, avatar and profile square fits, website thumbnail and cover fits, a document scan width preset, 1080 px and 1920 px width presets, plus Open Graph and square fit-within presets. Fit presets keep the full image visible and do not crop or pad the picture.

Example

If a marketplace asks for a 1200 x 1200 px product photo, upload your image and enter the exact size. If you only need the same image at half size, choose the 50% scale preset and the matching width and height are filled in automatically. For JPEG photos, lower the quality slider slightly when the resized file also needs to be smaller.

For a large 4000 px wide phone photo that only needs to be 1920 px wide on a website, keep preserve aspect ratio enabled, enter 1920 as the width, and let the browser calculate the matching height. The full image is scaled down; it is not cropped.

How to use it

1

Upload an image

Choose a local image file. The page reads its dimensions in your browser.

2

Set dimensions

Choose a percentage scale preset, or enter an exact width or height manually.

3

Preview and download

Export the resized image as PNG or JPEG after checking the preview.

FAQ

Does this resize images locally?

Yes. The uploaded image is read by browser APIs and resized with canvas on your device. It is not uploaded to a server.

Can I keep the original aspect ratio?

Yes. Choose a scale preset such as 50% or 200%, or leave preserve aspect ratio enabled and enter either width or height. The matching dimension is calculated automatically.

Which output formats are supported?

The current browser canvas export supports PNG and JPEG. PNG is useful for crisp graphics and transparency; JPEG is often smaller for photos.

Can I control JPEG quality?

Yes. When JPEG output is selected, use the quality slider to balance file size and image clarity before downloading.

Can I choose the downloaded file name?

Yes. Enter a file name before resizing. The tool sanitizes the name and adds the correct PNG or JPG extension automatically.

Do the Open Graph and square presets crop the image?

No. Fit presets such as Open Graph, avatar, profile, thumbnail, cover, and square resize the image within the named box while preserving the aspect ratio. Use Crop Image first if you need an exact cropped composition.

Will resizing crop the image?

No. This tool scales the whole image. Use a crop tool when you need to remove edges or force a different composition.

Will resizing always make the file smaller?

Not always. Fewer pixels often help, but the output format, JPEG quality, transparency, and browser encoder can all affect final file size.

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