[](https://crates.io/crates/aer)
[](https://docs.rs/aer/)
[](https://deepwiki.com/caer/aer)
The toolkit for creatives.
## Quickstart
Here's the TL;DR to get going _quick_ with `aer` for web development:
1. `cargo install aer`
2. `cd` to a path containing assets you want to compile and serve over local HTTP
3. `aer init`
4. Configure your source and target ("build") paths in `Aer.toml`
4. `aer serve`
5. Check out your assets on [localhost:1337](http://localhost:1337)
Check out [what's here](#whats-here) to see everything else you can do.
## What's Here
### Asset Processors
`aer procs` runs a pipeline of asset processors defined in an `Aer.toml` configuration file. Processors transform source assets (Markdown, SCSS, images, templates) into production-ready output with support for profile-based configuration (e.g., development vs production settings).
> [!NOTE]
> Use `aer init` to create a starter `Aer.toml` in the current directory.
`aer serve` starts a local development server that watches for file changes and automatically rebuilds assets.
See [concept/README.md](concept/README.md) for detailed documentation.
### Color Palette Picker

`aer palette` launches an interactive color palette picker based on [Oklab Colorspace](https://bottosson.github.io/posts/oklab/) relationships.
## License and Contributions
Copyright © 2026 With Caer, LLC.
Licensed under the Functional Source License, Version 1.1, MIT Future License.
Refer to [the license file](LICENSE.md) for more info.