Image Resizer

This tool computes new image dimensions in pixels from the provided inputs. It requires original_width_px and original_height_px (in pixels) and supports output dimension calculation via target_width_px, target_height_px, or scale_factor. If you supply only target_width_px and keep_aspect_ratio is true, the height is calculated as round(original_height_px * (target_width_px / original_width_px)). If you supply only target_height_px, the width is computed similarly. If both target_width_px and target_height_px are provided and keep_aspect_ratio is true, the tool uses the most restrictive scale: scale = min(target_width_px / original_width_px, target_height_px / original_height_px) and applies it to both sides. When scale_factor is provided, new dimensions are simply round(original_width_px * scale_factor) and round(original_height_px * scale_factor). If keep_aspect_ratio is false and both targets are provided, the outputs are exactly those targets. Example: orig 1024x768, scale 0.5 => 512x384; target 800x600 with aspect preserved => 800x600. The tool returns new_width_px and new_height_px as integers in px. It does not modify the image data; integration will perform actual raster resizing.