When should you use relative or absolute paths in WordPress?

In WordPress, relative paths are an option for links within the same site if you want fewer links to update when changing domains. For links to external sites, or links appearing in emails or syndicated content, absolute URLs that include the protocol and domain are suitable. The key considerations are where the link appears and how it will be maintained, rather than a blanket assumption that “production sites must use absolute URLs.” The supplied WordPress community material includes this recommendation, but it reflects a contributor’s trade-offs, not an official rule.

First, distinguish the terms: a leading slash does not make a complete URL

“Absolute path” can mean different things in these discussions. Some people use it to refer to /about/, while others mean https://example.com/about/. Before comparing approaches, check the actual format being discussed.

• Root-relative path: For example, /about/. It does not include the protocol or domain and is a type of relative URL.
• Absolute URL: For example, https://example.com/about/. It includes the complete information needed to locate the page.

The supplied technical discussion also notes that if a document sets a base href, relative links are affected by that base, while complete absolute URLs are not. So it is not enough to consider how short a link is; you also need to check where it ultimately points.

Internal links: easier domain changes, under certain conditions

The Semrush material lists relative URLs as a common choice for internal links because they are shorter and easier to manage during updates or migrations. For example, if an internal “About Us” link uses /about/, and only the domain changes while the page path stays the same, there is no old domain to replace in that link.

This benefit comes from leaving the domain out of the link; it does not mean that “no links need updating during a site migration.” If the destination page’s path also changes, you still need to check whether the original /about/ remains correct. When choosing relative paths, consider domain changes and page path changes separately.

External sites, emails, and images: choose based on where the link is used

• Links to external websites: Use complete URLs to explicitly identify the destination site, rather than providing only a path within a site.
• Emails or syndicated content: Semrush lists these as common uses for absolute URLs, which retain complete destination information.
• Image sources: Images load from the path specified in src. The material notes that both relative and absolute URLs can be used; images are not restricted to either one.

Development and production sites: avoid a one-size-fits-all rule

A contributor in the WordPress Taiwan community argues that live sites should use absolute paths and that relative paths are more convenient for development sites. Another technical discussion, however, favors root-relative paths for internal links. These views differ and are not sufficient to establish a universal rule. When making a choice, checking whether a link points to another site, whether it needs to move with the domain, and whether a base setting affects it provides a more concrete basis than relying solely on the “development” or “production” label.