Resize any Photo or Signature

Image resizing changes an image’s pixel dimensions, such as reducing a 4000 × 3000 px image to 1200 × 900 px. Making an image smaller can reduce its file size and help it load faster, while enlarging it increases its dimensions. However, standard enlargement does not create new detail and may make the image appear less sharp. Keeping the aspect ratio locked prevents stretching or distortion.

To resize an image:

1. Upload or drag and drop your image.
2. Enter the required width and height, choose a percentage, or select a preset size.
3. Keep the aspect ratio locked if you want to preserve the image’s original proportions.
4. Select an output format and quality level if required.
5. Check the before-and-after preview.
6. Click Resize and download the processed image.

Images can be resized using online image-resizing tools, desktop photo editors, mobile apps or image-processing software. These tools calculate new pixel dimensions and rebuild the image using a resampling method. A browser-based image resizer is often the quickest choice because it can resize an image without requiring software installation.

The best method is to resize an image to the exact dimensions required while keeping its aspect ratio locked. Use a high-quality resampling method, preview the result and select the appropriate format—JPG for photographs, PNG for transparency and WebP for efficient web use. Whenever possible, resize from the original high-resolution image instead of repeatedly resizing an already processed copy.

The best image-resizing software depends on your needs. Professional photo editors provide detailed control and batch-processing features, while online image resizers are more convenient for quick everyday tasks. A good resizing tool should offer exact dimensions, percentage resizing, aspect-ratio locking, format selection, quality controls, a clear before-and-after preview and secure image processing. For most users, a fast browser-based tool with these features is the simplest option.

No. Everything runs in your browser using the Canvas API. Your image never leaves your device.

JPG, PNG and WebP. Choose the one that best fits the destination.

Yes. Use the signature presets or set custom pixel dimensions with a suitable DPI.

300 DPI is a safe default for print. Screens are typically 72 or 96 DPI.

The resizer accepts JPG, JPEG, PNG and WebP up to 50 MB per image and up to 50 megapixels of resolution. One image at a time.