Does resizing an image upload it to a server?

No. All resizing is done locally in your browser using JavaScript. Your image never leaves your device.

Can I resize images to a custom dimension?

Yes, you can enter any custom width and height. You can also maintain the original aspect ratio while resizing.

What image formats can I resize?

You can resize JPG, PNG, and WebP images. The resized image can be downloaded in your preferred format.

Is the Image Resizer free to use?

Yes, completely free with no watermarks, no sign-up, and no restrictions on usage.

Image Resizer & Compressor — Free, Private, Client-Side

Frequently Asked Questions

Are my images uploaded to a server?

Never. Everything runs in your browser using the HTML5 Canvas API. Your images never leave your device at any point — no upload, no server, no data stored anywhere.

What is the difference between resizing and compressing?

Resizing changes the pixel dimensions (e.g. 4000 × 3000 → 800 × 600). Compression reduces the encoded file size by lowering JPEG/WebP quality without necessarily changing the dimensions. You can do both at once with this tool, or just one.

How does "Target File Size" work?

Enter a target (e.g. 200 KB) and the tool automatically binary-searches the best JPEG/WebP quality level to hit that size as closely as possible. It does not work with PNG (lossless). Leave the field blank to use the manual quality slider instead.

Can I process multiple images at once?

Yes — switch to Batch Mode, add as many images as you need, configure the settings once, then hit "Process All & Download ZIP". All output images are packed into a single ZIP for you.

What do the social media presets do?

They set the width and height to the recommended pixel dimensions for popular platforms like Instagram, Facebook, X/Twitter, Pinterest, and standard HD/4K video resolutions. Click any preset and it fills in the exact pixel values for you.

What does "Add padding" do?

When enabled, your image is scaled to fit within the target dimensions while preserving its aspect ratio, and any leftover space is filled with your chosen background color. This is useful for creating perfectly square thumbnails without distorting the image.

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Image Resizer & Compressor

Drop your image here

Preview

Before / After

Output Format

Resize

Extra Options

Done!

Batch Settings — applied to every image

0 images

Batch Complete!

Frequently Asked Questions

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