A digital signature can be added 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’s cache.
For a standard installation, the assets associated with a theme are organized in the web folder at the following location below the Magento root.
To sign static files:
On the Admin sidebar, tap Stores. Then under Settings, choose Configuration.
In the panel on the left under Advanced, choose Developer.
Expand the Static Files Settings section.
Static Files Settings
Set Sign Static Files to “Yes”.
When complete, tap Save Config.
|CSS||Directory that contains the CSS files that control the visual styling that is associated with the skin. Example location on server:
|Fonts||Directory that contains the fonts that are available to be used by the theme. Location on server:
|Images||Directory that contains all images used by the theme, including buttons, background textures, and so on. Example location on server: