Free Online Image Resizer
Resize images to exact dimensions with zero quality loss. Convert to WebP, AVIF, or JPEG XL.
How to Resize an Image Online
Upload Your Image
Drag and drop your image or click to browse. We support JPEG, PNG, GIF, WebP, and HEIC files up to 200 MB. Your image is processed securely on our servers and deleted automatically after download.
Set Dimensions
Enter a custom width and height in pixels, or choose from preset sizes like 1920x1080 or 4K. The aspect ratio locks automatically to prevent distortion, but you can unlock it for custom proportions.
Convert & Download
Choose your output format -- WebP for the best compression, AVIF for cutting-edge efficiency, or JPEG XL for maximum quality. Hit convert and download your perfectly resized image in seconds.
Frequently Asked Questions
Yes, SharpWebP's image resizer is completely free to use with no watermarks or hidden fees. You can resize up to 5 images per day without creating an account. If you need higher limits, our free account tier increases your daily quota, and paid plans start at just 499 INR per month for 50 images per day with batch processing and additional output formats like AVIF and JPEG XL.
Not with SharpWebP. Traditional resizers use basic bilinear interpolation that creates visible pixelation, especially when upscaling. SharpWebP uses advanced multi-pass Lanczos resampling with up to 16x supersampling, AI-powered content analysis to choose the optimal algorithm for each image, and PSNR/SSIM validation to guarantee quality scores above 99%. Whether you are downscaling for web or upscaling for print, every pixel is processed with professional-grade precision.
SharpWebP accepts all major image formats as input: JPEG, PNG, GIF, WebP, and HEIC (from iPhones and iPads). For output, free users receive WebP format, which offers the best balance of quality and file size with 97% browser support. Paid plans unlock AVIF (20% smaller than WebP, 89% browser support), JPEG XL (best lossless quality, growing browser support), as well as traditional JPEG and PNG output formats.
SharpWebP handles images up to 200 MB in file size and 20,000 x 20,000 pixels (400 megapixels) in resolution. This covers everything from smartphone photos and social media images to professional DSLR photographs, drone captures, and large-format print files. Processing happens on our optimized servers with 512 MB of dedicated memory per request, so even enormous images are resized quickly without taxing your device.
Most online resizers use basic client-side canvas resizing that degrades quality, especially on large images. SharpWebP is different in several key ways: server-side processing using ImageMagick with multi-pass Lanczos resampling ensures professional results. AI-powered content analysis detects whether your image contains text, photographs, or graphics and selects the optimal algorithm automatically. Every output is validated with PSNR and SSIM quality metrics. And you get access to next-generation formats like WebP, AVIF, and JPEG XL that reduce file sizes by 30-50% compared to JPEG with no visible quality loss.