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A Magento 2 extension, which allows you to add preconnect, prefetch or preload resource hints to your Magento 2 storeview's head.

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Dan0sz/ResourceHints-magento2

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THIS EXTENSION IS NO LONGER ACTIVELY MAINTAINED

If it doesn't work on your Magento 2 instance, please fork this repo and fix it -- and feel free to submit a PR to add your changes to this repo.

Update January 31st, 2022: I've removed the Magento version requirements from composer.json so that you can try it on any instance. I'm not guaranteeing it'll work.

Resource Hints for Magento 2

Overview

Add <link rel='preconnect'>, <link rel='dns-prefetch'>, <link rel='prefetch'>, or <link rel='preload'> resource hints to Magento 2's head.

Features

  • Tweak your Magento 2 store's performance by adding custom preconnect, dns-prefetch, prefetch, and preload headers.
  • Enable/disable crossorigin attribute.
  • Easily configurable at default, website and store view level (incl. sort order).

Installation

Using Composer

Installation using Composer is easy and recommended. From a terminal, just run:

composer require dan0sz/resource-hints-magento2

Manually

If you can't or dont want to use Composer, you can download the master-branch of this repository and copy the contents to app/code/Dan0sz/ResourceHints.

After installation

Developer Mode

  • Run bin/magento setup:upgrade
  • Done!

Production Mode

  • Run bin/magento setup:upgrade
  • Run bin/magento setup:di:compile
  • Run bin/magento setup:static-content:deploy [locales e.g. en_US nl_NL]
  • Done!

Configuration

After installation a new tab is added to Stores > Configuration > General > Web called Resource Hints.

How does it work?

While most settings of this extension speak for themselves. The Resource column contains a few nifty tricks (thanks to @chedaroo), which will come in handy when e.g. Static content signing is enabled.

Values in the Resource column are assumed to be relative (local) assets. When a relative path is entered and Static Content Signing is enabled, e.g.

(In these examples it is assumed that the default theme, Magento Luma is used.)

  • YourName_ModuleName::path/to/file.ext will resolve to https://yourdomain.tld/static/<<deployment_version>>/frontend/Magento/luma/en_US/YourName_ModuleName/path/to/file.ext, and
  • path/to/file.ext will resolve to https://yourdomain.tld/static/<<deployment_version>>/frontend/Magento/luma/en_US/path/to/file.ext.

When Static Content Signing is disabled, the above mentioned values will resolve to:

  • https://yourdomain.tld/static/frontend/Magento/luma/en_US/YourName_ModuleName/path/to/file.ext, and
  • https://yourdomain.tld/static/frontend/Magento/luma/en_US/path/to/file.ext respectively.

When absolute URLs (prefixed by a protocol, i.e. http://, https:// or //) are entered in the Resource column, no prior resolving will take place. E.g.

  • http://yourdomain.tld/path/to/file.ext,
  • https://yourdomain.tld/path/to/file.ext, and
  • //SomeVolume/path/to/file.ext.

The examples above will all resolve to the same exact URL.

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A Magento 2 extension, which allows you to add preconnect, prefetch or preload resource hints to your Magento 2 storeview's head.

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