# `Bylaw.Credo.Check.HEEx.RequireImageAlt`
[🔗](https://github.com/ryanzidago/bylaw/blob/v0.1.0-alpha.1/lib/bylaw/credo/check/heex/require_image_alt.ex#L1)

## Basics

> #### This check is disabled by default. {: .neutral}
>
> [Learn how to enable it](`e:credo:config_file.html#checks`) via `.credo.exs`.

This check has a base priority of `high` and works with any version of Elixir.

## Explanation

Requires static HEEx/HTML image tags to define an `alt` attribute.

## Examples

Embedded `~H` templates are checked during normal Credo runs over Elixir
files. Standalone `.html.heex` templates require enabling
`Bylaw.Credo.Plugin.HEExSources` in Credo's `plugins` configuration.
Avoid:

      ~H"""
      <img src="/logo.svg">
      """
Prefer:

      ~H"""
      <img src="/logo.svg" alt="Company logo">
      <img src="/spacer.svg" alt="">
      <img src={@src} alt={@alt}>
      """

## Notes

Embedded `~H` templates in `.ex` and `.exs` files are checked by Credo's normal source traversal. Standalone `.html.heex` templates are checked when `Bylaw.Credo.Plugin.HEExSources` is enabled in `.credo.exs`.

This check uses static HEEx token analysis, so it reports only patterns visible in the template source.

## Options

This check has no check-specific options. Configure it with an empty option list.

## Usage

Add this check to Credo's `checks:` list in `.credo.exs`:

```elixir
%{
  configs: [
    %{
      name: "default",
      checks: [
        {Bylaw.Credo.Check.HEEx.RequireImageAlt, []}
      ]
    }
  ]
}
```

## Check-Specific Parameters

*There are no specific parameters for this check.*

## General Parameters

Like with all checks, [general params](`e:credo:check_params.html`) can be applied.

Parameters can be configured via the [`.credo.exs` config file](`e:credo:config_file.html`).

---

*Consult [api-reference.md](api-reference.md) for complete listing*