Theme assets

The static files are the collection of assets, such as CSS, fonts, images, and JavaScript that is used by a theme. The location of static files is specified in the Base URL configuration. You can add a digital signature to the URL of each static file to make it possible for browsers to detect when a newer version is available. The newer version of the file is used if the signature differs from what is stored in the browser cache.

For a standard installation, the assets associated with a theme are organized in the web folder at the following location below the Commerce root.

[commerce_root]/app/design/frontend/Magento/[theme_name]/web

Add a digital signature to static file URLs

1. On the Admin sidebar, go to Stores > Settings > Configuration.

2. In the left panel, expand Advanced and choose Developer.

3. Expand the Static Files Settings section.

   

4. Set Sign Static Files to Yes.

5. When complete, click Save Config.

Merge CSS files

As part of an effort to optimize your site and reduce page load time, you can reduce the number of separate CSS files by merging them into a single, condensed file. If you open a merged CSS file, you see one continuous stream of text, with line breaks removed. You cannot edit the merged file, so it is best to wait until you are out of the development mode and no longer making frequent changes to the CSS.

1. On the Admin sidebar, go to Stores > Settings > Configuration.

2. In the left panel, Advanced and choose Developer.

3. Expand the CSS Settings section.

   

   For detailed descriptions of these configuration options, see CSS Settings in the Configuration Reference.

4. Set Merge CSS Files to Yes.

5. When complete, click Save Config.

Merge JavaScript files

Multiple JavaScript files can be merged into a single, condensed file to reduce page load time. If you open a merged JavaScript file, you see one continuous stream of text, with line breaks removed. If you are finished with the development process and the code contains no errors, you might consider merging the files.

1. On the Admin sidebar, go to Stores > Settings > Configuration.

2. In the left panel, Advanced and choose Developer.

3. Expand the JavaScript Settings section.

   

   For detailed descriptions of these configuration options, see JavaScript Settings in the Configuration Reference.

4. Set Merge JavaScript Files to Yes.

5. When complete, click Save Config.