Libpng 1.4.21beta01 - August 7, 2017 This is not intended to be a public release. It will be replaced within a few weeks by a public version or by another test version. Files available for download: Source files with LF line endings (for Unix/Linux) and with a "configure" script 1.4.21beta01.tar.xz (LZMA-compressed, recommended) 1.4.21beta01.tar.gz Source files with CRLF line endings (for Windows), without the "configure" script lp1421b01.7z (LZMA-compressed, recommended) lp1421b01.zip Other information: 1.4.21beta01-README.txt 1.4.21beta01-LICENSE.txt libpng-1.4.21beta01-*.asc (armored detached GPG signatures) Changes since the last public release (1.4.20): version 1.4.21 [%RDATE%] Moved chunk-name and chunk-length checks into PNG_EXTERN private png_check_chunk_name() and png_check_chunk_length() functions (Suggested by Max Stepin). Send comments/corrections/commendations to glennrp at users.sourceforge.net or to png-mng-implement at lists.sf.net (subscription required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement). Glenn R-P