Rust-native Tailwind CSS v4.1-equivalent toolchain.

ironframe is a production-ready OSS project in Rust that targets high compatibility with Tailwind CSS v4.1 behavior and output. Scanner, generator, config, and CLI modules are separated so teams can benchmark, validate, and ship in a Node-free pipeline.

Quick Start View GitHub

Production-ready CLI

scan/build/watch commands support one-shot builds, watch mode, ignore globs, minify output, and compare-css validation for migration.

Tailwind-compatible pipeline

Supports @import "tailwindcss", @source include/exclude/inline patterns, @apply, split imports, and build-time functions such as --spacing() and --alpha().

Modular Rust architecture

core/scanner/generator/config components stay independent, making profiling, compatibility checks, and incremental extension straightforward.

Setup and validation workflow

Start with cargo install or cargo run, then apply scan/build/watch in stages. During migration, use --compare-css against your reference output and lock behavior with ironframe.toml.

Install

cargo install --path .

CLI Example

terminal

# 1) Run without installing
cargo run -- scan "src/**/*.{html,tsx}"

# 2) Build once
ironframe build --output dist/tailwind.css "src/**/*.{html,tsx}"

# 3) Build with template CSS and config
ironframe build -i src/app.css -c ironframe.toml -o dist/app.css "src/**/*.{html,tsx}"

# 4) Compare output with reference CSS
ironframe build -i src/app.css -o dist/app.css --compare-css dist/app.tailwind.css "src/**/*.{html,tsx}"

# 5) Watch mode with polling
ironframe watch --poll --poll-interval 250 -o dist/app.css "src/**/*.{html,tsx}"

Production note

ironframe targets Tailwind CSS v4.1-equivalent compatibility Validate generated CSS against your existing output and add regression checks in CI before a full rollout.

OSS List

README / Full Specs