jxl-encoder-cli 0.2.0

Command-line JPEG XL encoder
jxl-encoder-cli-0.2.0 is not a library.

cjxl-rs

crates.io CI MSRV

Command-line JPEG XL encoder. Pure Rust, #![forbid(unsafe_code)].

Wraps jxl-encoder — see that crate for library usage.

Install

cargo install jxl-encoder-cli

Usage

# Lossy (distance 1.0 = visually lossless)
cjxl-rs input.png output.jxl -d 1.0

# Lossless
cjxl-rs input.png output.jxl --lossless

# Quality mode (0-100, maps to distance internally)
cjxl-rs input.png output.jxl -q 90

Reads PNG (including APNG animation). Writes bare JXL codestream or container format (when metadata or animation is present).

Flags

Flag Default Description
-d, --distance 1.0 Butteraugli distance (0 = lossless, 1.0 = visually lossless)
-q, --quality 90 Quality 0-100 (alternative to distance)
-e, --effort 7 Effort 1-10 (higher = slower, better compression)
--lossless off Lossless modular encoding
--no-gaborish on Disable gaborish pre-filter
--no-pixel-domain-loss on Disable pixel-domain loss (faster, lower quality)
--no-ans ANS on Use Huffman instead of ANS
--no-optimize-codes on Single-pass static Huffman (streaming)
--dct8-only off Force DCT8 only
--noise off Enable noise synthesis
--denoise off Wiener denoising pre-filter (implies --noise)
--no-error-diffusion on Disable error diffusion
--lz77 off Enable LZ77 backward references (ANS two-pass only)
--tree-learning off Content-adaptive MA tree for lossless
--squeeze off Haar wavelet transform for lossless
--no-butteraugli on Disable butteraugli quantization loop
--icc FILE none Embed ICC profile
--exif FILE none Embed EXIF metadata
--xmp FILE none Embed XMP metadata

License

Dual-licensed: AGPL-3.0 or commercial.

I've maintained and developed open-source image server software — and the 40+ library ecosystem it depends on — full-time since 2011. Fifteen years of continual maintenance, backwards compatibility, support, and the (very rare) security patch. That kind of stability requires sustainable funding, and dual-licensing is how we make it work without venture capital or rug-pulls. Support sustainable and secure software; swap patch tuesday for patch leap-year.

Our open-source products

Your options:

  • Startup license — $1 if your company has under $1M revenue and fewer than 5 employees. Get a key →
  • Commercial subscription — Governed by the Imazen Site-wide Subscription License v1.1 or later. Apache 2.0-like terms, no source-sharing requirement. Sliding scale by company size. Pricing & 60-day free trial →
  • AGPL v3 — Free and open. Share your source if you distribute.

See LICENSE-COMMERCIAL for details.

Upstream

Upstream code from libjxl/libjxl is licensed under BSD-3-Clause.

Our additions and improvements are dual-licensed (AGPL-3.0 or commercial) as above.