Version numbers in query strings are useful for caching. If an attachment changes, its version number and, therefore, its URL changes. This allows for the attachment to be cached for an extended period of time or indefintely, for example, with the directive “immutable” of the Cache-Control header.
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Contributors & Developers
“Attachment URL Version” is open source software. The following people have contributed to this plugin.Contributors
- Require WordPress 4.6 to properly prepare the plugin for localization.
- Properly prepare the plugin for localization.
- Minor corrections in readme.txt.
- Change plugin URL to wordpress.org.
- Initial release.