diff --git a/public/script.js b/public/script.js
index c0efd75a0..aa6c63b2e 100644
--- a/public/script.js
+++ b/public/script.js
@@ -2522,10 +2522,11 @@ export function scrollChatToBottom() {
  * Substitutes {{macro}} parameters in a string.
  * @param {string} content - The string to substitute parameters in.
  * @param {Record<string,any>} additionalMacro - Additional environment variables for substitution.
+ * @param {(x: string) => string} [postProcessFn] - Post-processing function for each substituted macro.
  * @returns {string} The string with substituted parameters.
  */
-export function substituteParamsExtended(content, additionalMacro = {}) {
-    return substituteParams(content, undefined, undefined, undefined, undefined, true, additionalMacro);
+export function substituteParamsExtended(content, additionalMacro = {}, postProcessFn = (x) => x) {
+    return substituteParams(content, undefined, undefined, undefined, undefined, true, additionalMacro, postProcessFn);
 }
 
 /**
@@ -2537,9 +2538,10 @@ export function substituteParamsExtended(content, additionalMacro = {}) {
  * @param {string} [_group] - The group members list for {{group}} substitution.
  * @param {boolean} [_replaceCharacterCard] - Whether to replace character card macros.
  * @param {Record<string,any>} [additionalMacro] - Additional environment variables for substitution.
+ * @param {(x: string) => string} [postProcessFn] - Post-processing function for each substituted macro.
  * @returns {string} The string with substituted parameters.
  */
-export function substituteParams(content, _name1, _name2, _original, _group, _replaceCharacterCard = true, additionalMacro = {}) {
+export function substituteParams(content, _name1, _name2, _original, _group, _replaceCharacterCard = true, additionalMacro = {}, postProcessFn = (x) => x) {
     if (!content) {
         return '';
     }
@@ -2597,7 +2599,7 @@ export function substituteParams(content, _name1, _name2, _original, _group, _re
         Object.assign(environment, additionalMacro);
     }
 
-    return evaluateMacros(content, environment);
+    return evaluateMacros(content, environment, postProcessFn);
 }
 
 
diff --git a/public/scripts/macros.js b/public/scripts/macros.js
index d9fb5a09b..1efd42a14 100644
--- a/public/scripts/macros.js
+++ b/public/scripts/macros.js
@@ -424,13 +424,15 @@ function getTimeDiffMacro() {
  * @param {string} content - The string to substitute parameters in.
  * @param {EnvObject} env - Map of macro names to the values they'll be substituted with. If the param
  * values are functions, those functions will be called and their return values are used.
+ * @param {function(string): string} postProcessFn - Function to run on the macro value before replacing it.
  * @returns {string} The string with substituted parameters.
  */
-export function evaluateMacros(content, env) {
+export function evaluateMacros(content, env, postProcessFn) {
     if (!content) {
         return '';
     }
 
+    postProcessFn = typeof postProcessFn === 'function' ? postProcessFn : (x => x);
     const rawContent = content;
 
     /**
@@ -514,7 +516,7 @@ export function evaluateMacros(content, env) {
             break;
         }
 
-        content = content.replace(macro.regex, macro.replace);
+        content = content.replace(macro.regex, (...args) => postProcessFn(macro.replace(...args)));
     }
 
     return content;