0.8.0 • Public • Published

Tenon Web Accessibility Testing Grunt Plugin

This is a Grunt plugin for TENON - a web accessiblity testing API.

Tenon docs:

This Grunt Tenon plugin is open and free. However, access to the Tenon API must be granted by Tenon. You will need to obtain an API key to use it.

A similar gulp plugin that was part of this project has been moved to its own repository:

Getting Started

This plugin requires Grunt ^0.4.5.

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-tenon-client --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:



The plugin allows passing through of any Tenon API parameters. See the Tenon Docs for details.

This plugin uses tenon-api-client. The API module has additional parameters you can include in the Grunt configuration, such as "filter".

In addition to the API and client module options, there are these specific to the plugin:

  • snippet -- true or false (default false) to include errorSnippet in the console output.
  • saveOutputIn -- an (optional) path to a file that will receive all the results from the Tenon API. Default is no file output.
  • asyncLim -- the maximum number of files to test in parallel. Default is 1.
  • force -- report errors but don't fail the grunt task. Default is false.
  • config -- path to a JSON file containing options. Default is '.tenonrc' in the current working directory. The file is processed by the API module and can contain API and API Module parameters. This may be a good place to put your API key.

Here is a sample Gruntfile.js configuration:

tenon: {
  options: {
    key: 'your Tenon API key',
    filter: [31, 54],
    level: 'AAA',
  all: {
    options: {
      saveOutputIn: 'allHtml.json',
      snippet: true,
      asyncLim: 2
    src: [
  index: {
    src: [

The above defines two subtasks, all and index. The key, filter and level options are global and apply to both. The all subtask has additional options not shared with the other subtask.

Note on using http(s) URLs:

My use case for making this Grunt plugin is to use Tenon during builds on servers that are not accessible to Tenon. It passes the HTML file content, with inlined local Javascript and CSS to Tenon. However, it is possible to pass server URLs to Tenon instead of source by using the "urlPrefix" option provided by tenon-api-client. For example, if your target file is build/index.html and it can be addressed as then you can use the option urlPrefix: ''.

Remember, for this to work must be accessible to the Tenon server.

This option is applied to each target file.


0.7.0 - updated tenon-api-client and the manual run in src/index.js 0.6.2 - Documented use of urlPrefix. No code changes.

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