Utility Tool

Online Image Resizer
Pixels & Dimensions

Easily resize your photos to exact pixel dimensions (width & height). Compress to specific file sizes and convert formats effortlessly directly in your browser.

Custom Dimensions JPG, PNG, WebP 100% Private

Upload and Resize

Select your image and define the exact output size you need.

Tap to upload your image JPEG, PNG, WebP accepted (Max 15 MB)
Maintain Aspect Ratio Prevents the image from stretching
10 KB 5 MB

Note: Target size works best with JPG and WebP formats.

Processed locally in your browser. No files are uploaded to our servers.

Your resized image will appear here

Final Dimensions —
File Size —
Format JPEG

Free Online Image Resizer - Adjust Pixels and Dimensions Instantly

In the modern digital landscape, having perfectly sized images is essential. Whether you are optimizing a banner image for a website to improve loading speeds, preparing photos to meet strict social media dimensions, or formatting an image for a specific application form, a reliable tool is indispensable. Our Online Image Resizer allows you to manipulate the exact pixel width and height of any photo with pinpoint accuracy, without ever needing to download heavy software like Adobe Photoshop.

Why Resize Your Images?

Uploading massive, high-resolution photographs directly from modern smartphones or digital cameras is rarely a good idea. A single raw photo can exceed 5 MB and measure over 4000 pixels wide. If you are uploading this to a blog, an e-commerce platform, or a government portal, it will either be outright rejected or cause severe performance issues.

Understanding Aspect Ratio and Stretching

When you resize an image, you must pay attention to the Aspect Ratio—the proportional relationship between the image's width and its height. If you force an image to fit a dimension that does not match its original ratio, the image will appear distorted or "stretched."

Our tool features a "Maintain Aspect Ratio" lock. When this toggle is active, changing the width will automatically calculate and adjust the height (and vice versa) to ensure your photo remains perfectly proportional and distortion-free. If you absolutely need a specific size that breaks the ratio, you can disable the toggle, though some stretching will occur.

Converting Formats: JPG vs. PNG vs. WebP

Different situations call for different file types. Our tool doubles as an image format converter. Once your dimensions are set, you can choose how the final file is saved:

Compress to Target KB

Sometimes, dimensions aren't the only restriction. You might have a perfectly sized 800x800 pixel image, but the portal says "File size must be under 100 KB." Using our built-in slider, you can specify a target maximum size in Kilobytes. The internal engine will iteratively apply JPG or WebP compression until the file sits safely beneath your limit. (If you need heavy compression for tiny files, check out our dedicated 20KB Image Converter).

100% Secure and Browser-Based

Privacy is our priority. Unlike other online resizers that upload your personal photos to remote cloud servers for processing, our tool utilizes HTML5 Canvas technology to perform all resizing and compression directly inside your web browser. Your images never leave your device, ensuring total privacy and instantaneous processing speeds.

Frequently Asked Questions

Common questions about resizing dimensions and pixels.

When downscaling (making an image smaller in pixels), modern browser algorithms retain excellent sharpness automatically. To preserve the highest visual fidelity, select the PNG format, though this will result in a larger file size. For photos, choosing JPG and leaving the KB slider at a high value will keep the image looking crisp.
Aspect ratio is the proportional relationship between the width and height of an image. If you check "Maintain Aspect Ratio", typing a new width will automatically calculate the correct height so your image does not appear squashed or stretched out of shape.
Yes. Even if you upload a PNG, you can select "JPG" from the Output Format dropdown. The tool will automatically convert the file format during the resizing process. It supports converting between JPG, PNG, and WebP.
Our tool handles files up to 15 MB efficiently. Because the processing is done locally via your device's RAM rather than being uploaded to a server, attempting to load extremely massive RAW files might cause older mobile browsers to lag, but standard heavy smartphone photos will work perfectly.
Absolutely. Your images are completely secure because they are never uploaded anywhere. The resizing script executes locally inside your web browser, ensuring total privacy.
To reduce the KB size, you can do two things: first, reduce the physical dimensions (Width and Height). Second, use the "Target Max Size" slider to apply compression. Ensure you select "JPG" or "WebP", as PNGs do not compress well for photographs.