image tool on mac

The tool provides a local macOS image processing workflow for asset preparation. It solves the problem of consistent image optimization, resizing, and format conversion without cloud dependency. Primary users are designers, developers, marketers, and content teams who need repeatable results and fast iteration when preparing images for web, apps, and print. It is used when a batch of images must be standardized to specific formats, dimensions, and quality targets, while preserving color integrity and local file provenance.
Core Logic & Features: The tool performs input validation, a resize-and-convert pipeline, and optional metadata handling. Required features: specify at least one source image path, select target format, and define either width or height (or both). Outputs are generated in a destination folder with the same base name and new extension. Optional/Advanced features: batch mode on a directory, preserve aspect ratio toggle, color profile conversion, metadata preservation, and per-file error reporting.
Algorithms & Calculations: The tool computes scale factors per image: scale = min(width/ori_width, height/ori_height) when preserving aspect; new_w = floor(ori_width * scale) and new_h = floor(ori_height * scale). If either target width or height is provided without the other, the missing dimension uses the scale from the provided one. Lossy formats apply the user-specified quality; color profiles may be converted to sRGB if requested. Outputs are encoded using the chosen target format.
Error & Edge Cases: If source_paths are missing or files unreadable, the tool skips those files and reports; unsupported formats trigger a per-file error; zero or negative dimensions are rejected; destination path must exist or be creatable; insufficient disk space yields a per-file error.
Industry/Region & Localization: Units are pixels; color profile handling uses sRGB as default; no currency or locale-specific data; timestamps follow the system locale; messages are in English unless localized elsewhere.
Assumptions & Exclusions: Assumes local filesystem access; excludes cloud storage or remote fetch; does not provide a GUI description; does not enforce licensing or watermarking.