v0.1.0

imageopt: cross-platform image optimizer (CLI)

A fast, reliable, single-binary image optimizer in the spirit of ImageOptim, built in Rust. Optimizes JPEG, PNG, GIF, WebP and SVG in place and reports space saved. Lossless by default, opt-in lossy. Designed for CI automation.

- Engine (imageopt-core): content-based format detection; codecs propose candidate encodings and the engine keeps the smallest that re-decodes; never enlarges or corrupts a file (atomic temp-file+rename writes, panic-safe across the C codecs); parallel across files via rayon; decompression-bomb guard.
- Codecs: JPEG (true-lossless jpegtran-style coefficient transform, plus lossy re-encode via mozjpeg), PNG (oxipng + libimagequant), WebP (libwebp), SVG (usvg normalize/minify), static GIF. Lossy raster re-encoders honor the metadata policy.
- CLI (imageopt): --lossy/-q, --png-level, --strip, --dry-run, --backup, --check (CI gate), --json, -r, -j; live progress, table and JSON output, meaningful exit codes.
- CI/distribution: fmt + clippy (-D warnings) + tests on Linux/macOS/Windows; tag-triggered release matrix building self-contained binaries for macOS (arm64/x64), Linux (x64/arm64) and Windows (x64) with SHA256 checksums; composite GitHub Action for optimize-and-commit or PR gating.

Licensed GPL-3.0-or-later.