Image Resizer

Resize images to exact pixel dimensions, percentage or social media presets. Supports JPEG, PNG and WebP. Everything runs in your browser — your images never leave your device.

Free Online Image Resizer

Resize images to any dimension without installing software. This tool works entirely in your browser — no files are uploaded to any server, no account required, and there are no file size limits.

Resize modes explained

• Exact pixels — set a precise width and height. Enable "lock aspect ratio" to avoid distortion.
• Percentage — scale an image up or down relative to its original size. Useful when you need "half size" or "double size" quickly.
• Preset — common social media and web sizes built in, such as YouTube thumbnails, OG images and Instagram posts.

Fit modes explained

• Stretch — fills the exact target size. The image may appear stretched if the aspect ratio differs.
• Contain — scales the image to fit inside the target dimensions, preserving the aspect ratio. Empty space is filled with the background color.
• Cover — scales the image to fill the target dimensions, cropping excess edges. The aspect ratio is preserved.
• Pad — same as Contain but always fills the full canvas with a background color, giving a consistent output size.

Common use cases

• Resize photos before uploading to a website or blog
• Create social media images in the right dimensions
• Prepare images for email attachments with file size limits
• Generate thumbnails for videos and articles
• Scale down images to speed up web page loading

Is this image resizer safe?

Yes — all resizing happens locally in your browser using the Canvas API. Your images are never sent to any server and never stored anywhere. You can even use this tool offline once the page has loaded.

Related tools

• Image Compressor — reduce file size without changing dimensions
• WebP Converter — convert JPEG and PNG images to WebP format
• Color Picker — pick and convert colors from your images