Resize Image

Resizing images to specific pixel dimensions is a common requirement across many workflows. Social media platforms have recommended image sizes — 1200x630 for Facebook link previews, 1080x1080 for Instagram posts, 1500x500 for Twitter headers — and uploading an image at the wrong size often leads to awkward cropping or blurry scaling. This tool lets you hit those exact dimensions every time, without installing any software.

Beyond social media, resizing is essential for web development and content management. Product images need consistent dimensions for clean grid layouts. Blog thumbnails should all match. Hero images that are 4000 pixels wide waste bandwidth and slow down page loads when they are displayed at 1200 pixels. Downsizing before uploading keeps your site fast and your storage costs low.

The aspect ratio lock is enabled by default to prevent distortion. When it is on, changing the width automatically recalculates the height based on the original proportions, and vice versa. If you need non-proportional dimensions — for example, cropping a landscape photo into a square — simply turn off the lock and enter both values manually. All processing uses the browser's Canvas API, so your images stay on your device and are never sent to a server.