Image Resizer
Resize images to any dimension instantly. Set exact pixel dimensions, scale by percentage, or resize to fit social media sizes — free, no sign-up required.
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🔒 Your files are private. All processing happens locally in your browser. Files are never uploaded to any server.
FAQ
Frequently asked questions.
Upload your image by clicking the upload area or dragging it in. Enter the target width and height in pixels, or choose a percentage to scale proportionally. Check the 'Lock aspect ratio' option to prevent distortion, then click Resize. Your resized image downloads instantly.
Yes. Enable the 'Maintain aspect ratio' or 'Lock proportions' option before resizing. When you enter a new width, the height adjusts automatically to preserve the original proportions, and vice versa. This prevents the stretched or squished look that occurs when aspect ratio is not maintained.
You can resize JPG, PNG, WebP, and GIF images. The output format matches your input format. If you need to change format while resizing, use our image converter tools (PNG to JPG or WebP Converter) after resizing.
Yes. Common social media presets include: Instagram post (1080x1080px), Facebook cover (820x312px), Twitter header (1500x500px), YouTube thumbnail (1280x720px), and LinkedIn banner (1584x396px). Enter these dimensions in the width and height fields to get pixel-perfect results.
Making an image smaller maintains quality well. Enlarging an image beyond its original size will result in some blurriness since the tool must interpolate new pixels. Use bicubic interpolation for the best enlargement quality. For dramatic enlargements, consider using a dedicated AI upscaling tool.
Yes. Switch to percentage mode and enter a value like 50% to halve the image dimensions, or 200% to double them. Percentage scaling is useful when you want to scale proportionally without knowing exact pixel dimensions.
Absolutely. Image resizing is done entirely in your browser using the HTML5 Canvas API. No images are uploaded to any server or sent to any external service. Your photos and files remain completely private on your device.
Yes. The Image Resizer works on all modern mobile browsers. Open the tool in Chrome or Safari on your smartphone, select an image from your gallery, set your target dimensions, and download the resized image directly to your phone.
File size depends on both dimensions and compression. Reduce dimensions first, then run the resized image through our Image Compressor to further reduce file size. For a target of under 100KB for example, resize to smaller dimensions and then compress at 70–80% quality.
Yes. The Image Resizer is 100% free with no watermarks, no size limits, no sign-up, and no paid plans. You can resize as many images as you need at any time.