Enlarge images using Lanczos3 interpolation. Free online image upscaler — increase resolution without losing sharpness. No signup required.
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Supports HEIC, JPG, PNG, WebP, AVIF, TIFF, GIF · Up to 50 files · 50MB max
Enlarge your images while preserving sharpness and detail using advanced Lanczos3 interpolation. Unlike simple upscaling that creates blurry results, our algorithm intelligently reconstructs pixel data for cleaner, sharper enlargements. Perfect for increasing the resolution of product photos, artwork, or any image that needs to be displayed at a larger size.
Your images are processed entirely in your browser. They are never uploaded to any server. Once you close the tab, all data is gone. No tracking, no storage, no cookies for your files.
Our tool uses Lanczos3 interpolation, which produces significantly sharper results than basic bilinear or bicubic methods. Some softening is natural when enlarging, but results are excellent for 2-4x enlargements.
You can upscale by custom percentages or pixel dimensions. For best results, we recommend staying within 2-4x the original size.