Free Image Resizer Online – Resize Images Without Uploading

How to Resize Images

1. Click Add Images and choose one or more JPG, PNG or WebP files. If a file can't be opened, the tool names it and adds the others.
2. Pick a resize mode. By Percentage scales every image from 5% to 200% of its original size. By Dimensions sets a width in pixels. With Maintain aspect ratio switched on, the height is calculated for you. Switching it off lets you set both values, which can stretch or squash the image.
3. Choose the output format and, for JPEG or WebP, the quality.
4. Click Resize. Each file then shows its original and new dimensions, its new file size and how much the size changed.
5. Save files one at a time, or use Download All, which downloads each resized image as a separate file.

Choosing a Format and Quality

• JPEG suits photos and gives small files, but it does not support transparency. Transparent areas in a PNG are filled with white when you save it as JPEG.
• PNG keeps transparency, which makes it the better choice for logos, icons and screenshots. Files are usually larger than JPEG.
• WebP is a modern format that often produces smaller files than JPEG at similar visual quality.

For JPEG and WebP, the quality setting (10–100%) trades file size against visible compression. Both formats are lossy, so re-saving an image always loses a little detail. If a resized file comes out larger than the original, which can happen with small images or a high quality setting, lower the quality or the size and resize again.

Privacy and Limits

Your images are resized in your browser using the HTML Canvas API, so they are not uploaded to a server. Because each image is re-encoded, metadata such as camera details and GPS location from the original file is not copied into the resized version.

Scaling above 100% makes an image bigger, but it cannot add detail that was not there, so enlarged images look softer. For the sharpest result, start from the largest original you have and scale down.

Preparing an image for social sharing? Once the resized image is online, paste its URL into the OG Previewer to see how it appears in link previews.