Image Resizer

About This Tool

The Image Resizer lets you resize any image to custom pixel dimensions directly in your browser. It supports JPG, PNG, and WebP output formats with adjustable quality for lossy formats. All processing uses the HTML5 Canvas API — your image never leaves your device and is never uploaded to any server.

You can lock the aspect ratio to prevent distortion, or unlock it to set exact width and height independently. For JPEG and WebP outputs, a quality slider (1–100) lets you balance file size against visual fidelity — 80–90% is typically the best trade-off for photos.

How to Use

1. Drop an image onto the upload area or click it to select a file from your device.
2. Enter the target Width and Height in pixels.
3. Toggle the lock icon to maintain or release the aspect ratio.
4. Choose an output format: PNG, JPEG, or WebP. Set quality for JPEG/WebP.
5. Click Resize to process, then Download to save the resized image.

Use Cases

Web developers resize screenshots and product photos to specific dimensions required by a CMS or design spec. Social media managers create images at platform-required sizes (e.g., 1200×630 for Open Graph, 1080×1080 for Instagram). Email marketers reduce image file sizes for faster-loading newsletters. E-commerce sellers resize product photos to consistent thumbnail dimensions before upload.

FAQ

• What formats are supported for input? — Any image your browser can display: JPG, PNG, WebP, GIF (first frame), SVG, and more.
• Does resizing up (upscaling) reduce quality? — Yes. Upscaling interpolates pixels and introduces blurriness. For best quality, always resize down from a larger source.
• Which format should I use? — PNG for images with text or transparency; JPEG for photos; WebP for the best compression on modern browsers.