PNG utilities tool.
This tool processes the input PNG file as follows:
- filter specific chunk types (
--keep), - merge multiple IDAT chunkst to single IDAT (
--merge-idat), - split IDAT chunk to specific IDAT chunk size (
--split-idat), - recompress Deflate stream in IDAT chunk (
--recompress), - bloat/explode filesize with insanity Deflate encoder (
--bloat,--explode).
This tool not modify PNG filter types (None/Sub/Up/Average/Peath) of each scanlines.
--bloat option generates Deflate stream that consists of ONE 'non-compressed block' per ONE source byte.
--explode option generates Deflate stream that consisit of ONE 'Dynamic Huffman codes block' per ONE source byte.Each Deflate block builds most inefficient Huffman code table to get worst (longest) code lengths.
MIT License