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Change the dimensions of your images in bulk. Scale by percentage or set exact pixel dimensions.
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This tool lets you resize image online free by setting exact pixel dimensions or scaling by a percentage. Upload one image or an entire batch and every file is resized to the same target dimensions in a single pass. The resizer preserves aspect ratio by default so your images are never stretched or distorted, but you can unlock the ratio if you need a specific non-proportional size.
All processing happens inside your browser using the Canvas API — no image data is ever sent to a server. That means your photos, documents, and screenshots stay completely private. You can resize image online free as many times as you need with no daily caps, no watermarks, and no account required. The tool runs on any device with a modern browser: desktop, tablet, or phone.
Passport and visa applications require photos at exact pixel dimensions — 600×600 or 2×2 inches at 300 DPI, for example. You can resize image online free to hit those targets precisely. Social media managers preparing posts for Instagram (1080×1080), Twitter headers (1500×500), or LinkedIn banners (1584×396) use the resizer to match each platform's specs without opening Photoshop. Web developers downscale high-resolution source images to the exact sizes their responsive layouts need, preventing the browser from downloading oversized files. Teachers resizing student ID photos for yearbook layouts and e-commerce sellers formatting product images to marketplace thumbnail requirements are other common use cases.
Does resizing reduce image quality?
Downscaling an image (making it smaller) generally preserves quality well because you are discarding excess pixels. Upscaling (making it larger) can introduce blurriness since the browser has to interpolate new pixels that did not exist in the original. For best results, start with the highest resolution source you have.
Can I resize multiple images to the same dimensions at once?
Yes. Add all images to the upload zone, set your target dimensions once, and every file in the batch is resized to those exact dimensions. This is especially useful for preparing a set of product photos or social media assets that all need to be the same size.
What formats does the resizer support?
The resizer works with JPG, PNG, WebP, AVIF, GIF, and BMP images. The output format matches the input, so a JPG stays a JPG after resizing. If you need to change formats as well, use one of the converter tools after resizing.
Is the aspect ratio preserved automatically?
By default, yes. When you change the width, the height adjusts proportionally (and vice versa) to prevent stretching. You can unlock the aspect ratio if you specifically need non-proportional dimensions, such as cropping a landscape photo into a square.
Are my images sent to a server?
No. All resizing is done client-side in your browser. Your images never leave your device, and no network requests are made during processing. This makes the tool safe to use with confidential documents, medical images, or any file you would not want on a third-party server.
Need smaller file sizes too? Run your resized images through the Image Compressor to cut weight even further. For format changes, try the WebP Converter or convert between PNG and JPG.