PNG Optimizer

The PNG Optimizer is a file-based tool designed for web developers, publishers, and design teams that need to reduce PNG file sizes without compromising visible quality. It supports both lossless and lossy modes and can generate a downloadable optimized PNG. Batch processing enables bulk work on image libraries.
Conceptually, the tool performs a PNG-aware compression pipeline: it analyzes image content, selects appropriate filters, optimizes color palettes, and adjusts color depth where safe. In lossy mode, quantization and dithering are constrained by a user-specified quality target to balance size and appearance. Metadata handling is optional and can be preserved when feasible.
Core value comes from automation, repeatable results, and a straightforward download workflow. Use cases include hero images, product thumbnails, gallery frames, and CDN-ready assets. The tool reports original versus optimized sizes and provides a per-file progress log for batch jobs. It maintains broad compatibility with standard PNG decoders across browsers and platforms, while allowing teams to select quality targets that fit performance budgets.
Assumptions include valid PNG inputs; it excludes non-PNG assets and real-time streaming optimizations. Outputs are provided as PNGs with accompanying size metrics, suitable for integration into CI pipelines or content delivery workflows.