Resize Images Online Free

Frequently asked questions

How do I resize an image online?

Upload your image (JPG, PNG, WebP), enter the desired width or height (or both), then click resize. The tool uses the browser canvas to resize. Download the result. Everything runs locally; no data is sent to any server.

Does resizing reduce quality?

Resizing to a smaller size reduces pixel count, so fine detail can be lost. Resizing to a larger size stretches pixels and can look soft. For best results, resize down when you need a smaller image; avoid enlarging small images too much.

Can I keep aspect ratio?

Yes. If you only enter width or only height, the other dimension is calculated automatically to preserve the original aspect ratio. You can also enter both to force specific dimensions (image may be stretched).

What formats are supported?

You can upload JPG, PNG, and WebP. The output format matches the input. These are the most common image formats for web and photos.

Are my images uploaded to a server?

No. All processing happens in your browser using the canvas API. Your image never leaves your device.

Is there a file size limit?

There is no fixed limit. Very large images may take longer or use more memory. Typical photos (a few MB) work without issues.

Why would I resize an image?

Common reasons: fit a photo to a website or form size limit, create thumbnails, reduce dimensions for email, or match requirements for CVs, social media, or print.

Does it work on mobile?

Yes. The tool runs in the mobile browser. Upload from your gallery, set dimensions, and download. No app install required.

Can I resize multiple images?

This tool processes one image at a time. For multiple images, use it repeatedly or combine with other tools.

What is the maximum output size?

Practical limits depend on your device and browser. Canvas has limits (often 16384px per side). For typical use (e.g. under 4000px), there are no issues.