Upscale an image

FileGizmo enlarges JPG, PNG, and WebP images by two, three, or four times their original width and height. Choose an image, select the scale factor, and review the target dimensions before processing. The result is useful when a design tool requires a larger canvas, a small graphic needs more pixels for layout work, or an image must meet minimum dimension requirements.

This is an honest high-quality resampler, not a generative AI enhancement. It smooths the existing pixels with the browser’s highest-quality interpolation but cannot reconstruct fine detail, faces, or text that was never present in the source. Very large canvases consume substantial memory, so FileGizmo blocks output dimensions above 12,000 pixels and reports a clear error instead of risking an unstable tab. Decoding, resampling, and encoding run in a dedicated browser worker without uploads. PNG transparency is retained, and supported formats receive a standard downloadable result. For photographs, compare the preview at 100 percent before printing; enlargement increases dimensions, not the source camera’s genuine resolving power.