IMAGE RESIZER

Image Resizer

Upload an image and set the width, height, or scale to resize it. Your file never leaves the browser.

Choose an image to resize

Safely process one image at a time in your browser.

Choose an image or drag it herePNG, JPG, WebP, GIF, BMP · Your image never leaves the browser.

Set the width and height

Preserve the aspect ratio or enter exact pixel dimensions, then save the result.

File name: -
Original dimensions: -
Original size: -

Width in pixels

Height in pixels

Preserve original aspect ratio

Quick resize

Save formatEfficiently reduces file size for photos and web images. Image quality 90% Background for transparent areas

#FFFFFF

JPG does not support transparency, so transparent areas use this color.

Resize resultCalculatingCalculating estimated size. · Same dimensions as the original.

CONNECTED TOOL

Convert the format of your resized image

Choose PNG, JPG, or WebP and adjust quality to balance file size and compatibility.

Convert image format →

IMAGE SIZE GUIDE

Resize Images and Change Photo Dimensions for Free

The image resizer changes the pixel dimensions of photos and graphics in your browser. Preserve the original aspect ratio or enter a custom resolution, then save as PNG, JPG, or WebP with no installation or registration.

How to resize an image

Choose a PNG, JPG, WebP, GIF, or BMP image.
Enter width and height in pixels or choose a percentage of the original size.
Choose the save format and quality, then review the preview and estimated file size.
Select Download resized image to save the result.

Useful for

Reduce photo dimensions for blogs and websites
Match pixel dimensions for social media, profiles, and thumbnails
Scale down large originals for email and documents
Resize and convert a photo for the web in one workflow

What to know when enlarging or reducing an image

Aspect ratio

Aspect ratio lock prevents stretching or squashing. If you need a specific shape, crop to the required ratio first and then resize.

Enlargement and quality

Enlarging a small image does not add new detail. For the sharpest result, start with a large original and reduce it to the target size.

Dimensions and file size

Reducing the pixel count usually reduces file size. Lowering JPG or WebP quality as well can improve web page loading speed.

Frequently Asked Questions

Is the image uploaded to a server when I resize it?

No. Loading, resizing, and creating the file all happen in your browser. The selected image is never sent to or stored on Congdy Coding's servers.

Can I make a photo smaller while preserving its aspect ratio?

Yes. With aspect ratio lock enabled, changing either the width or height automatically calculates the other value from the original proportions.

Does enlarging an image improve its quality?

No. You can increase the pixel dimensions, but this does not create detail that is missing from the original, so large enlargements may look soft or pixelated.

Which formats can I use to save a resized image?

Save as PNG, JPG, or WebP. You can adjust JPG and WebP quality, while transparent areas in JPG are filled with the selected background color.

Can I resize an animated GIF?

You can load a GIF, but only its first displayed frame is resized and saved as a static image.

This tool and guide are reviewed directly by Congdy Coding, operated by a developer with eight years of experience. Last updated: October 2, 2026