Restricts permalink syntax and disables permalink editing after a post is published.
As of April 2026, Strict Permalinks is a WordPress permalinks plugin with 10 active installations and a 0/5 rating0. It has been downloaded 2.1K+ times in total. Requires WordPress 2.8+ and PHP false+. Available on WordPress.org since 2009. Last updated 16 years ago — may have compatibility concerns. Top alternative: Nginx Helper.
Strict Permalinks does two things:
post_name portion of the permalink to alphanumerics and hyphensLike me, you may have been under the impression that post slugs are already restricted to alphanumerics and hyphens. In the current WordPress 2.8.5, a title that includes certain kinds of punctuation (e.g., “smartquotes”) will result in URL-encoded characters in the post_name field. Many browsers handle this oddity seamlessly, however this may cause difficulties when integrating with systems expecting a more limited URL syntax.
strict-permalinks folder from the /wp-content/plugins/ directorystrict-permalinks folder to the /…| WordPress | 2.8+ requiredTested up to 2.9.2 |
| PHP | false+ required |
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