Free Online Image Resizer
Resize images by pixels, percentage, or popular social media presets.
Resizing happens locally in your browser, so your photo is never uploaded. Enlarging an image adds pixels but cannot recover detail that was not in the original.
About the Image Resizer
This free image resizer changes the pixel dimensions of a photo without sending it anywhere. It is useful when a website, job application, marketplace, or social network asks for a specific width and height and rejects files that are too large or too small. Drop in a JPG, PNG, or WebP image, then type an exact width, use a percentage, or pick a ready-made social media preset. The preview updates as you change the numbers, so you can see the result before you download it.
Pixels, percentages, and presets
Pixel mode gives you full control over the final width and height. With Lock aspect ratio enabled, editing one side automatically adjusts the other side so the photo does not look stretched. Percentage mode is a quick way to scale an image up or down relative to its original size. Presets set the exact dimensions used by popular platforms: an Instagram square post, an Instagram story, a Facebook cover, a YouTube thumbnail, an X post, and a LinkedIn banner.
Choosing an output format
JPG creates small files and is a good default for photographs. PNG keeps sharp edges and supports transparency, which makes it better for logos, screenshots, and graphics. WebP usually produces the smallest file while keeping good quality, and it works in all modern browsers. Quality only affects JPG and WebP exports; PNG is always lossless.
Frequently asked questions
Does resizing up improve image quality?
No. Enlarging adds new pixels by interpolation, but it cannot recreate detail that the original photo never captured. For the sharpest result, start with the largest version you have and resize downward.
Why does my resized photo look stretched?
Stretching happens when the width and height no longer match the original proportions. Turn on Lock aspect ratio and edit only one dimension, or use a preset that matches the platform you are publishing to.
Are my images uploaded to a server?
No. The image is read and resized on your device with the browser canvas API. Nothing is uploaded, and the downloaded file is created locally.