)|(?<=
)|^)#([A-Za-z0-9_]+)(?:(?=\s|[[:punct:]]|$))`.
* `ACTIVITYPUB_USERNAME_REGEXP` - Change the default regex to detect @-replies in a text. Default: `(?:([A-Za-z0-9\._-]+)@((?:[A-Za-z0-9_-]+\.)+[A-Za-z]+))`.
-* `ACTIVITYPUB_URL_REGEXP` - Change the default regex to detect urls in a text. Default: `(http|https):\/\/([-a-zA-Z0-9@:;\/%_;\+.~#?&=]*)`.
+* `ACTIVITYPUB_URL_REGEXP` - Change the default regex to detect urls in a text. Default: `(www.|http:|https:)+[^\s]+[\w\/]`.
* `ACTIVITYPUB_CUSTOM_POST_CONTENT` - Change the default template for Activities. Default: `[ap_title]\n\n[ap_content]\n\n[ap_hashtags]\n\n[ap_shortlink]`.
* `ACTIVITYPUB_AUTHORIZED_FETCH` - Enable AUTHORIZED_FETCH. Default: `false`.
* `ACTIVITYPUB_DISABLE_REWRITES` - Disable auto generation of `mod_rewrite` rules. Default: `false`.
diff --git a/readme.txt b/readme.txt
index 7fcaa420..c9604948 100644
--- a/readme.txt
+++ b/readme.txt
@@ -115,7 +115,7 @@ The plugin uses PHP Constants to enable, disable or change its default behaviour
* `ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS` - Change the number of attachments, that should be federated. Default: `3`.
* `ACTIVITYPUB_HASHTAGS_REGEXP` - Change the default regex to detect hashtext in a text. Default: `(?:(?<=\s)|(?<=
)|(?<=
)|^)#([A-Za-z0-9_]+)(?:(?=\s|[[:punct:]]|$))`.
* `ACTIVITYPUB_USERNAME_REGEXP` - Change the default regex to detect @-replies in a text. Default: `(?:([A-Za-z0-9\._-]+)@((?:[A-Za-z0-9_-]+\.)+[A-Za-z]+))`.
-* `ACTIVITYPUB_URL_REGEXP` - Change the default regex to detect urls in a text. Default: `(http|https):\/\/([-a-zA-Z0-9@:;\/%_;\+.~#?&=]*)`.
+* `ACTIVITYPUB_URL_REGEXP` - Change the default regex to detect urls in a text. Default: `(www.|http:|https:)+[^\s]+[\w\/]`.
* `ACTIVITYPUB_CUSTOM_POST_CONTENT` - Change the default template for Activities. Default: `[ap_title]\n\n[ap_content]\n\n[ap_hashtags]\n\n[ap_shortlink]`.
* `ACTIVITYPUB_AUTHORIZED_FETCH` - Enable AUTHORIZED_FETCH. Default: `false`.
* `ACTIVITYPUB_DISABLE_REWRITES` - Disable auto generation of `mod_rewrite` rules. Default: `false`.