Online Image Resizer Tool - Smart Compression/Format Conversion/Batch Processing
Supports fast scaling of JPG/PNG/GIF and other formats, intelligently optimizing resolution and file size. Powerful batch processing feature allows you to upload multiple images simultaneously and uniformly adjust size, format, and quality, completing all image processing at once, greatly improving work efficiency. Customizable aspect ratio, batch image processing, with compression quality adjustment, transparent background fill and other functions. No software download required, free online high-definition image size modification, suitable for social media, web design and printing needs.
Drag and drop images here, or click to select files
Supports selecting multiple images at once for batch processing
How to Resize Images
Step 1: Select Images to Resize
Select the image files you want to resize. You can click the upload button or drag and drop files directly into the upload area.
We support common image formats including JPG, PNG, WEBP, GIF, etc.
Batch Processing Feature: You can select multiple files at once for batch processing. Supports uploading dozens or even hundreds of images simultaneously, all images will be processed with the same size settings, format, and quality parameters, greatly saving your time. Whether processing product images, social media images, or batch optimizing website images, the batch processing feature can help you work more efficiently.
Step 2: Set Target Size and Options
Set the size you want your images to be resized to. You can specify width and height, and the units can be pixels or percentage.
If you select the "Keep Aspect Ratio" option, images will be scaled proportionally to prevent distortion.
Choose the appropriate resize mode: Stretch (may cause image distortion), Fit (complete display within target area), or Crop (fill target area but may crop some content).
Step 3: Set Output Format and Download
Choose the output format that suits your needs. PNG is suitable for images that need transparent backgrounds, JPG is suitable for photos, and WEBP provides better compression.
For JPG format, you can adjust the quality setting to balance file size and image quality.
Click the "Resize Image" button to process the images. All uploaded images will be processed uniformly according to your settings. After processing is complete, you can preview the effect of each image in the results area, and support individual download or batch download of all processed images for quick access to all results.
How to Reduce Image File Size
One way to reduce image file size is to lower its resolution. For example, if you have a 4000×3000 pixel image, resizing it to 2000×1500 pixels can reduce the file size by about 75%.
Another way to reduce image file size is to use more efficient compression formats like WEBP, or for JPEG format, lower the quality setting (80-90% quality settings are usually good enough for most purposes).
Photos taken with modern phones and cameras usually have very high resolution (over 4000×3000 pixels), which is too high for most web uses and general printing.
For large images, the recommended size is a width of no more than 2000 pixels, which is sufficient for most display devices and uses.