Click or drag image here
JPG, PNG, WebP supported · Max recommended 25MB
Resize photos to exact pixel dimensions. Maintain aspect ratio or set custom width and height.
Click or drag image here
JPG, PNG, WebP supported · Max recommended 25MB
ResizerPhoto's free image resizer lets you change the width and height of any photo in seconds. Whether you need to resize a JPG, PNG or WebP image for a website, email attachment or social media post, our tool handles it all directly in your browser — no uploads to any server, no signup required.
Unlike desktop photo editors that require installation and a learning curve, ResizerPhoto's resizer works the moment you open this page. The moment you drop in an image, it is decoded into an HTML5 canvas element inside your own browser tab, where every pixel calculation happens locally on your device's processor. This means there is no waiting for a file to travel to a remote server and back, no risk of your photo sitting on someone else's storage, and no dependency on your internet connection once the page has loaded. Whether you are preparing a banner image that needs to be exactly 1200 by 630 pixels for a blog post, shrinking a phone photo down to fit a website's upload limit, or matching dimensions requested by a print shop, the resizer gives you precise pixel-level control instead of relying on a platform to auto-scale your image, often with unpredictable cropping or stretching.
When you upload a photo, the resizer first reads its natural width and height using the browser's built-in image decoding, then draws that image onto an in-memory canvas sized to the width and height values you enter. If 'maintain aspect ratio' is enabled, the tool calculates a scale factor from whichever dimension changes the most and applies that same factor to both width and height, so your subject never looks squashed or stretched. The canvas then re-samples every pixel at the new size using the browser's native image-smoothing algorithm, which blends neighboring pixel colors together rather than simply duplicating or deleting rows and columns — this is why shrinking a photo keeps edges looking clean instead of jagged. Once the resize calculation finishes, the canvas is converted back into a downloadable JPG or PNG file using the same format as your original upload, so you never end up with an unexpected file type. Because every one of these steps runs through your browser's own graphics engine, a resize that would normally require uploading a multi-megabyte photo to a server completes in a fraction of a second, even offline.
Upload your image, enter the desired width and height, and keep the aspect ratio checkbox enabled. Our tool uses canvas-based resizing which preserves as much detail as possible at the new dimensions.
Currently our tool processes one image at a time. Upload your image, resize it, download it, then upload the next one.
We recommend images up to 25MB. Very large images may take a moment to process depending on your device.
No. The output format matches your input — JPG stays JPG, PNG stays PNG.
Yes, you can increase dimensions. Keep in mind that enlarging an image beyond its original size may reduce sharpness since pixels must be interpolated.
Reducing size keeps quality high. Enlarging a small image beyond its original resolution will reduce sharpness, since no new detail can be created.
This tool processes one image at a time so everything runs locally in your browser without uploads. For batches, repeat the steps for each photo.
Resizing changes the overall dimensions of the whole image. Cropping removes part of the image to change its shape or focus.
Yes, this photo resizer is completely free to use directly in your browser, with no signup or software download needed. It's built to be a simple image resizer - upload a photo, set the width and height you want, and download the resized image in seconds.