v0.1.0

Changelog

All notable changes to PixPack are documented in this file.

[0.1.0] - 2025-07-25

Added

• Initial release
• encode command: convert any file into a lossless PNG image
• decode command: restore original file from a PixPack PNG
• inspect command: view metadata without extracting
• verify command: check payload integrity without extracting
• PixPack binary format v1 with SHA-256 integrity verification
• Safe filename handling (directory traversal prevention)
• Overwrite protection
• Custom image width support
• Cross-platform support (Windows, Linux, macOS)
• Comprehensive test suite with round-trip, corruption, and fuzz tests
• Benchmarks for encoding and decoding operations
• Full documentation (README, FORMAT.md, SECURITY.md, CONTRIBUTING.md)
• GitHub Actions CI (test workflow for Ubuntu, Windows, macOS)
• GitHub Actions release workflow (builds for 6 platforms/architectures)
• MIT License

Fixed

• CLI exit code mapping: invalid/unsupported PixPack images now exit with code 3; checksum mismatches exit with code 4; usage errors exit with code 2; general errors exit with code 1
• Unicode multiplication sign (×) replaced with ASCII 'x' in output for better terminal compatibility
• Error matching updated to use errors.Is for proper wrapped error detection
• Module path updated to github.com/DraxonV1/PixPack

Known Limitations

• No encryption — encode is not encryption
• No steganography features
• Large files require significant memory for PNG encoding
• PNG output may be larger than input for compressed data (ZIP, video, etc.)

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SHA-256 Checksums