Image Resizer
Resize JPG, PNG, and WebP photos to exact pixels, a percentage, or ready-made social media sizes. Resize up to 20 images at once.
Resize your images
Precise dimensions, high-quality smoothing, and batch output.
Drag & drop your images here
or browse files from your device
Browse images JPG, PNG, WebP · Up to 20 images · No uploads1. Choose your resize mode
Settings apply to the entire batchEnter your target dimensions. With the ratio locked, each image retains its own original proportions.
Locked: changing one dimension updates the other using the first image as a reference. Each batch image keeps its own aspect ratio.
Scale each image relative to its original size. 50% makes both its width and height half as large.
Choose 1–500%. Values above 100% enlarge images and may look softer.
Your images (0/20)
Compare source dimensions with each resized image.
How to use this tool
Drop or browse for up to 20 JPG, PNG, or WebP files.
Use pixels, percentage, or a social media preset.
Save them individually or together in a ZIP.
Frequently asked questions
Simple answers about resizing your images.
Will resizing reduce image quality?
Reducing dimensions removes some pixel detail. This tool uses high-quality canvas smoothing to help photos look good at their new size. Enlarging beyond the original size cannot add missing detail, and JPG/WebP quality settings may also affect appearance.
What happens when I lock or unlock the aspect ratio?
With the ratio locked, each image keeps its original proportions. The width and height boxes are linked using the first image as the reference; for a batch with mixed aspect ratios, every image is resized proportionally using the dimension you last edited. Unlocking makes every image match both entered dimensions exactly, which can stretch it.
Do social media presets crop my pictures?
By default, yes: a center crop fills the exact preset size without distortion. Select “Fit entire image (white padding)” if you prefer to show everything, with white space added when the shapes do not match.
How many files can I resize at once?
You can select or drop up to 20 JPG, PNG, or WebP images in one batch. You can download files one at a time or put all successfully resized results in a single ZIP.
Are my photos uploaded or saved on a server?
No. Files never leave your device. This page reads images using your browser and resizes them with the Canvas API; the only optional external download is the public JSZip library code used to create a ZIP locally.
Does changing the format or quality affect transparency?
PNG and most WebP images can retain transparent pixels. JPG does not support transparency, so transparent areas are placed on white. The quality slider affects JPG/WebP encoding only; PNG uses lossless encoding.
About Image Resizer
The image resizer helps you resize JPG, PNG and WebP images online for free. It is intended for people preparing photos and graphics for websites, documents or social posts. Start with the input and settings shown in the tool above. Review the result before saving or reusing it, especially when converting between formats that support different features. Keep your original so you can compare the output or try another setting.
How to use Image Resizer
- Add your image — Choose an image from your device.
- Choose dimensions — Use pixel dimensions, a percentage or a social preset. Choose the fit method and check the aspect-ratio setting.
- Resize and save — Apply the resize, review the result and download it.
Key features
- Pixel and percentage resizing
- Social-media size presets
- Aspect-ratio control
- Fit and crop methods
- Local image processing
Choose a common canvas size for social posts. The image will be centered and cropped, or fitted with padding, to reach the exact preset dimensions.