diff --git a/js/src/components/Activity/DiscussionActivityItem.vue b/js/src/components/Activity/DiscussionActivityItem.vue
index c05c145fd..33cc9ab4b 100644
--- a/js/src/components/Activity/DiscussionActivityItem.vue
+++ b/js/src/components/Activity/DiscussionActivityItem.vue
@@ -55,6 +55,7 @@ import RouteName from "../../router/name";
 import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
 import { mixins } from "vue-class-component";
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -67,35 +68,9 @@ export default class DiscussionActivityItem extends mixins(ActivityMixin) {
   ActivityDiscussionSubject = ActivityDiscussionSubject;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityDiscussionSubject.DISCUSSION_CREATED:
-        if (this.isAuthorCurrentActor) {
-          return "You created the discussion {discussion}.";
-        }
-        return "{profile} created the discussion {discussion}.";
-      case ActivityDiscussionSubject.DISCUSSION_REPLIED:
-        if (this.isAuthorCurrentActor) {
-          return "You replied to the discussion {discussion}.";
-        }
-        return "{profile} replied to the discussion {discussion}.";
-      case ActivityDiscussionSubject.DISCUSSION_RENAMED:
-        if (this.isAuthorCurrentActor) {
-          return "You renamed the discussion from {old_discussion} to {discussion}.";
-        }
-        return "{profile} renamed the discussion from {old_discussion} to {discussion}.";
-      case ActivityDiscussionSubject.DISCUSSION_ARCHIVED:
-        if (this.isAuthorCurrentActor) {
-          return "You archived the discussion {discussion}.";
-        }
-        return "{profile} archived the discussion {discussion}.";
-      case ActivityDiscussionSubject.DISCUSSION_DELETED:
-        if (this.isAuthorCurrentActor) {
-          return "You deleted the discussion {discussion}.";
-        }
-        return "{profile} deleted the discussion {discussion}.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+    });
   }
 
   get iconColor(): string | undefined {
diff --git a/js/src/components/Activity/EventActivityItem.vue b/js/src/components/Activity/EventActivityItem.vue
index 573ee11a7..c5cee603d 100644
--- a/js/src/components/Activity/EventActivityItem.vue
+++ b/js/src/components/Activity/EventActivityItem.vue
@@ -44,6 +44,7 @@ import { Component } from "vue-property-decorator";
 import RouteName from "../../router/name";
 import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -56,36 +57,9 @@ export default class EventActivityItem extends mixins(ActivityMixin) {
   RouteName = RouteName;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityEventSubject.EVENT_CREATED:
-        if (this.isAuthorCurrentActor) {
-          return "You created the event {event}.";
-        }
-        return "The event {event} was created by {profile}.";
-      case ActivityEventSubject.EVENT_UPDATED:
-        if (this.isAuthorCurrentActor) {
-          return "You updated the event {event}.";
-        }
-        return "The event {event} was updated by {profile}.";
-      case ActivityEventSubject.EVENT_DELETED:
-        if (this.isAuthorCurrentActor) {
-          return "You deleted the event {event}.";
-        }
-        return "The event {event} was deleted by {profile}.";
-      case ActivityEventCommentSubject.COMMENT_POSTED:
-        if (this.subjectParams.comment_reply_to) {
-          if (this.isAuthorCurrentActor) {
-            return "You replied to a comment on the event {event}.";
-          }
-          return "{profile} replied to a comment on the event {event}.";
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You posted a comment on the event {event}.";
-        }
-        return "{profile} posted a comment on the event {event}.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+    });
   }
 
   get iconColor(): string | undefined {
diff --git a/js/src/components/Activity/GroupActivityItem.vue b/js/src/components/Activity/GroupActivityItem.vue
index d54bf896a..09d0cd496 100644
--- a/js/src/components/Activity/GroupActivityItem.vue
+++ b/js/src/components/Activity/GroupActivityItem.vue
@@ -77,6 +77,7 @@ import RouteName from "../../router/name";
 import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
 import { mixins } from "vue-class-component";
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -89,20 +90,9 @@ export default class GroupActivityItem extends mixins(ActivityMixin) {
   ActivityGroupSubject = ActivityGroupSubject;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityGroupSubject.GROUP_CREATED:
-        if (this.isAuthorCurrentActor) {
-          return "You created the group {group}.";
-        }
-        return "{profile} created the group {group}.";
-      case ActivityGroupSubject.GROUP_UPDATED:
-        if (this.isAuthorCurrentActor) {
-          return "You updated the group {group}.";
-        }
-        return "{profile} updated the group {group}.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+    });
   }
 
   get iconColor(): string | undefined {
diff --git a/js/src/components/Activity/MemberActivityItem.vue b/js/src/components/Activity/MemberActivityItem.vue
index c03c21b99..da8b24c17 100644
--- a/js/src/components/Activity/MemberActivityItem.vue
+++ b/js/src/components/Activity/MemberActivityItem.vue
@@ -42,19 +42,13 @@
 </template>
 <script lang="ts">
 import { usernameWithDomain } from "@/types/actor";
-import { ActivityMemberSubject, MemberRole } from "@/types/enums";
+import { ActivityMemberSubject } from "@/types/enums";
 import { Component } from "vue-property-decorator";
 import RouteName from "../../router/name";
 import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
 import { mixins } from "vue-class-component";
-
-export const MEMBER_ROLE_VALUE: Record<string, number> = {
-  [MemberRole.MEMBER]: 20,
-  [MemberRole.MODERATOR]: 50,
-  [MemberRole.ADMINISTRATOR]: 90,
-  [MemberRole.CREATOR]: 100,
-};
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -67,49 +61,10 @@ export default class MemberActivityItem extends mixins(ActivityMixin) {
   ActivityMemberSubject = ActivityMemberSubject;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityMemberSubject.MEMBER_REQUEST:
-        if (this.isAuthorCurrentActor) {
-          return "You requested to join the group.";
-        }
-        return "{member} requested to join the group.";
-      case ActivityMemberSubject.MEMBER_INVITED:
-        if (this.isAuthorCurrentActor) {
-          return "You invited {member}.";
-        }
-        return "{member} was invited by {profile}.";
-      case ActivityMemberSubject.MEMBER_ADDED:
-        if (this.isAuthorCurrentActor) {
-          return "You added the member {member}.";
-        }
-        return "{profile} added the member {member}.";
-      case ActivityMemberSubject.MEMBER_JOINED:
-        return "{member} joined the group.";
-      case ActivityMemberSubject.MEMBER_UPDATED:
-        if (this.subjectParams.member_role && this.subjectParams.old_role) {
-          return this.roleUpdate;
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You updated the member {member}.";
-        }
-        return "{profile} updated the member {member}.";
-      case ActivityMemberSubject.MEMBER_REMOVED:
-        if (this.isAuthorCurrentActor) {
-          return "You excluded member {member}.";
-        }
-        return "{profile} excluded member {member}.";
-      case ActivityMemberSubject.MEMBER_QUIT:
-        return "{profile} quit the group.";
-      case ActivityMemberSubject.MEMBER_REJECTED_INVITATION:
-        return "{member} rejected the invitation to join the group.";
-      case ActivityMemberSubject.MEMBER_ACCEPTED_INVITATION:
-        if (this.isAuthorCurrentActor) {
-          return "You accepted the invitation to join the group.";
-        }
-        return "{member} accepted the invitation to join the group.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+      isObjectMemberCurrentActor: this.isObjectMemberCurrentActor,
+    });
   }
 
   get icon(): string {
@@ -149,77 +104,6 @@ export default class MemberActivityItem extends mixins(ActivityMixin) {
     }
   }
 
-  get roleUpdate(): string | undefined {
-    if (
-      Object.keys(MEMBER_ROLE_VALUE).includes(this.subjectParams.member_role) &&
-      Object.keys(MEMBER_ROLE_VALUE).includes(this.subjectParams.old_role)
-    ) {
-      if (
-        MEMBER_ROLE_VALUE[this.subjectParams.member_role] >
-        MEMBER_ROLE_VALUE[this.subjectParams.old_role]
-      ) {
-        switch (this.subjectParams.member_role) {
-          case MemberRole.MODERATOR:
-            if (this.isAuthorCurrentActor) {
-              return "You promoted {member} to moderator.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were promoted to moderator by {profile}.";
-            }
-            return "{profile} promoted {member} to moderator.";
-          case MemberRole.ADMINISTRATOR:
-            if (this.isAuthorCurrentActor) {
-              return "You promoted {member} to administrator.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were promoted to administrator by {profile}.";
-            }
-            return "{profile} promoted {member} to administrator.";
-          default:
-            if (this.isAuthorCurrentActor) {
-              return "You promoted the member {member} to an unknown role.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were promoted to an unknown role by {profile}.";
-            }
-            return "{profile} promoted {member} to an unknown role.";
-        }
-      } else {
-        switch (this.subjectParams.member_role) {
-          case MemberRole.MODERATOR:
-            if (this.isAuthorCurrentActor) {
-              return "You demoted {member} to moderator.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were demoted to moderator by {profile}.";
-            }
-            return "{profile} demoted {member} to moderator.";
-          case MemberRole.MEMBER:
-            if (this.isAuthorCurrentActor) {
-              return "You demoted {member} to simple member.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were demoted to simple member by {profile}.";
-            }
-            return "{profile} demoted {member} to simple member.";
-          default:
-            if (this.isAuthorCurrentActor) {
-              return "You demoted the member {member} to an unknown role.";
-            }
-            if (this.isObjectMemberCurrentActor) {
-              return "You were demoted to an unknown role by {profile}.";
-            }
-            return "{profile} demoted {member} to an unknown role.";
-        }
-      }
-    } else {
-      if (this.isAuthorCurrentActor) {
-        return "You updated the member {member}.";
-      }
-      return "{profile} updated the member {member}";
-    }
-  }
-
   get isObjectMemberCurrentActor(): boolean {
     return (
       // eslint-disable-next-line @typescript-eslint/ban-ts-comment
diff --git a/js/src/components/Activity/PostActivityItem.vue b/js/src/components/Activity/PostActivityItem.vue
index a2a5a650c..b9047ab73 100644
--- a/js/src/components/Activity/PostActivityItem.vue
+++ b/js/src/components/Activity/PostActivityItem.vue
@@ -41,6 +41,7 @@ import RouteName from "../../router/name";
 import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
 import { mixins } from "vue-class-component";
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -53,25 +54,9 @@ export default class PostActivityItem extends mixins(ActivityMixin) {
   ActivityPostSubject = ActivityPostSubject;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityPostSubject.POST_CREATED:
-        if (this.isAuthorCurrentActor) {
-          return "You created the post {post}.";
-        }
-        return "The post {post} was created by {profile}.";
-      case ActivityPostSubject.POST_UPDATED:
-        if (this.isAuthorCurrentActor) {
-          return "You updated the post {post}.";
-        }
-        return "The post {post} was updated by {profile}.";
-      case ActivityPostSubject.POST_DELETED:
-        if (this.isAuthorCurrentActor) {
-          return "You deleted the post {post}.";
-        }
-        return "The post {post} was deleted by {profile}.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+    });
   }
 
   get iconColor(): string | undefined {
diff --git a/js/src/components/Activity/ResourceActivityItem.vue b/js/src/components/Activity/ResourceActivityItem.vue
index d9de2c24b..d3fb4bdbe 100644
--- a/js/src/components/Activity/ResourceActivityItem.vue
+++ b/js/src/components/Activity/ResourceActivityItem.vue
@@ -52,6 +52,7 @@ import PopoverActorCard from "../Account/PopoverActorCard.vue";
 import ActivityMixin from "../../mixins/activity";
 import { mixins } from "vue-class-component";
 import { Location } from "vue-router";
+import { convertActivity } from "@/services/activity-converter";
 
 @Component({
   components: {
@@ -63,74 +64,10 @@ export default class ResourceActivityItem extends mixins(ActivityMixin) {
   RouteName = RouteName;
 
   get translation(): string | undefined {
-    switch (this.activity.subject) {
-      case ActivityResourceSubject.RESOURCE_CREATED:
-        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-        // @ts-ignore
-        if (this.activity?.object?.type === "folder") {
-          if (this.isAuthorCurrentActor) {
-            return "You created the folder {resource}.";
-          }
-          return "{profile} created the folder {resource}.";
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You created the resource {resource}.";
-        }
-        return "{profile} created the resource {resource}.";
-      case ActivityResourceSubject.RESOURCE_MOVED:
-        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-        // @ts-ignore
-        if (this.activity?.object?.type === "folder") {
-          if (this.parentDirectory === null) {
-            if (this.isAuthorCurrentActor) {
-              return "You moved the folder {resource} to the root folder.";
-            }
-            return "{profile} moved the folder {resource} to the root folder.";
-          }
-          if (this.isAuthorCurrentActor) {
-            return "You moved the folder {resource} into {new_path}.";
-          }
-          return "{profile} moved the folder {resource} into {new_path}.";
-        }
-        if (this.parentDirectory === null) {
-          if (this.isAuthorCurrentActor) {
-            return "You moved the resource {resource} to the root folder.";
-          }
-          return "{profile} moved the resource {resource} to the root folder.";
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You moved the resource {resource} into {new_path}.";
-        }
-        return "{profile} moved the resource {resource} into {new_path}.";
-      case ActivityResourceSubject.RESOURCE_UPDATED:
-        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-        // @ts-ignore
-        if (this.activity?.object?.type === "folder") {
-          if (this.isAuthorCurrentActor) {
-            return "You renamed the folder from {old_resource_title} to {resource}.";
-          }
-          return "{profile} renamed the folder from {old_resource_title} to {resource}.";
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You renamed the resource from {old_resource_title} to {resource}.";
-        }
-        return "{profile} renamed the resource from {old_resource_title} to {resource}.";
-      case ActivityResourceSubject.RESOURCE_DELETED:
-        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
-        // @ts-ignore
-        if (this.activity?.object?.type === "folder") {
-          if (this.isAuthorCurrentActor) {
-            return "You deleted the folder {resource}.";
-          }
-          return "{profile} deleted the folder {resource}.";
-        }
-        if (this.isAuthorCurrentActor) {
-          return "You deleted the resource {resource}.";
-        }
-        return "{profile} deleted the resource {resource}.";
-      default:
-        return undefined;
-    }
+    return convertActivity(this.activity, {
+      isAuthorCurrentActor: this.isAuthorCurrentActor,
+      parentDirectory: this.parentDirectory,
+    });
   }
 
   get iconColor(): string | undefined {
diff --git a/js/src/service-worker.ts b/js/src/service-worker.ts
index 029da54ee..cd52ab97b 100644
--- a/js/src/service-worker.ts
+++ b/js/src/service-worker.ts
@@ -77,9 +77,14 @@ registerRoute(
 );
 
 self.addEventListener("push", async (event: any) => {
-  console.log("received push", event);
+  const activity = event.data.json();
+  console.log("received push", activity);
+
+  const template =
+    convertActivity(activity) || "A push notification has been sent";
+
   const options = {
-    body: "Ceci est une notification envoyée par Mobilizon !",
+    body: await translate(template),
     icon: "images/notification-flat.png",
     vibrate: [100, 50, 100],
     data: {
@@ -92,11 +97,6 @@ self.addEventListener("push", async (event: any) => {
         title: "Go to the site",
         icon: "images/checkmark.png",
       },
-      {
-        action: "close",
-        title: "Close the notification",
-        icon: "images/xmark.png",
-      },
     ],
   };
 
@@ -106,3 +106,69 @@ self.addEventListener("push", async (event: any) => {
     self.registration.showNotification("Push Notification", options)
   );
 });
+
+async function translate(template: string): Promise<string> {
+  const DEFAULT_LOCALE = "en_US";
+
+  let vueI18n = new VueI18n({
+    locale: DEFAULT_LOCALE, // set locale
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    messages: en, // set locale messages
+    fallbackLocale: DEFAULT_LOCALE,
+    formatFallbackMessages: true,
+    pluralizationRules,
+  });
+
+  vueI18n = await loadLanguageAsync(vueI18n, getLocale());
+  return vueI18n.t(template) as string;
+}
+
+function getLocale(): string {
+  const language = (
+    (window.navigator as any).userLanguage || window.navigator.language
+  ).replace(/-/, "_");
+
+  return language && Object.prototype.hasOwnProperty.call(langs, language)
+    ? language
+    : language.split("-")[0];
+}
+
+export async function loadLanguageAsync(
+  i18n: VueI18n,
+  lang: string
+): Promise<VueI18n> {
+  // If the same language
+  if (i18n.locale === lang) {
+    return Promise.resolve(setI18nLanguage(i18n, lang));
+  }
+
+  // If the language hasn't been loaded yet
+  const newMessages = await import(
+    /* webpackChunkName: "lang-[request]" */ `@/i18n/${vueI18NfileForLanguage(
+      lang
+    )}.json`
+  );
+  i18n.setLocaleMessage(lang, newMessages.default);
+  return setI18nLanguage(i18n, lang);
+}
+
+function setI18nLanguage(i18n: VueI18n, lang: string): VueI18n {
+  i18n.locale = lang;
+  return i18n;
+}
+
+function fileForLanguage(matches: Record<string, string>, lang: string) {
+  if (Object.prototype.hasOwnProperty.call(matches, lang)) {
+    return matches[lang];
+  }
+  return lang;
+}
+
+function vueI18NfileForLanguage(lang: string) {
+  const matches: Record<string, string> = {
+    fr: "fr_FR",
+    en: "en_US",
+  };
+  return fileForLanguage(matches, lang);
+}
diff --git a/js/src/services/activity-converter.ts b/js/src/services/activity-converter.ts
new file mode 100644
index 000000000..c3b258cc8
--- /dev/null
+++ b/js/src/services/activity-converter.ts
@@ -0,0 +1,52 @@
+import { IActivity, IPatchedActivity } from "@/types/activity.model";
+import { IGroup } from "@/types/actor";
+import { IMember } from "@/types/actor/member.model";
+import { IDiscussion } from "@/types/discussions";
+import { ActivityType } from "@/types/enums";
+import { IEvent } from "@/types/event.model";
+import { IPost } from "@/types/post.model";
+import { IResource } from "@/types/resource";
+import { convertDiscussionActivity } from "./activity/discussion";
+import { convertEventActivity } from "./activity/event";
+import { convertGroupActivity } from "./activity/group";
+import { convertMemberActivity } from "./activity/member";
+import { convertPostActivity } from "./activity/post";
+import { convertResourceActivity } from "./activity/resource";
+import { convertActivityOptions, reduceSubjectParams } from "./activity/utils";
+
+export function convertActivity(
+  activity: IActivity,
+  options: convertActivityOptions = {}
+): string | undefined {
+  const converter = mapActivityTypeToFunction(activity.type);
+  const patchedActivity = {
+    ...activity,
+    subjectParams: reduceSubjectParams(activity),
+  };
+  return converter(patchedActivity, options);
+}
+
+type activityConverter<T> = (
+  activity: IPatchedActivity<T>,
+  options: any
+) => string | undefined;
+
+const mapActivityTypeToFunction = (
+  activityType: string
+): activityConverter<any> => {
+  switch (activityType) {
+    case ActivityType.EVENT:
+      return convertEventActivity as activityConverter<IEvent>;
+    case ActivityType.POST:
+      return convertPostActivity as activityConverter<IPost>;
+    case ActivityType.MEMBER:
+      return convertMemberActivity as activityConverter<IMember>;
+    case ActivityType.RESOURCE:
+      return convertResourceActivity as activityConverter<IResource>;
+    case ActivityType.DISCUSSION:
+      return convertDiscussionActivity as activityConverter<IDiscussion>;
+    case ActivityType.GROUP:
+      return convertGroupActivity as activityConverter<IGroup>;
+  }
+  return () => undefined;
+};
diff --git a/js/src/services/activity/discussion.ts b/js/src/services/activity/discussion.ts
new file mode 100644
index 000000000..850d24cc7
--- /dev/null
+++ b/js/src/services/activity/discussion.ts
@@ -0,0 +1,39 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import { IDiscussion } from "@/types/discussions";
+import { ActivityDiscussionSubject } from "@/types/enums";
+import { convertActivityOptions } from "./utils";
+
+export function convertDiscussionActivity(
+  activity: IPatchedActivity<IDiscussion>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityDiscussionSubject.DISCUSSION_CREATED:
+      if (options.isAuthorCurrentActor) {
+        return "You created the discussion {discussion}.";
+      }
+      return "{profile} created the discussion {discussion}.";
+    case ActivityDiscussionSubject.DISCUSSION_REPLIED:
+      if (options.isAuthorCurrentActor) {
+        return "You replied to the discussion {discussion}.";
+      }
+      return "{profile} replied to the discussion {discussion}.";
+    case ActivityDiscussionSubject.DISCUSSION_RENAMED:
+      if (options.isAuthorCurrentActor) {
+        return "You renamed the discussion from {old_discussion} to {discussion}.";
+      }
+      return "{profile} renamed the discussion from {old_discussion} to {discussion}.";
+    case ActivityDiscussionSubject.DISCUSSION_ARCHIVED:
+      if (options.isAuthorCurrentActor) {
+        return "You archived the discussion {discussion}.";
+      }
+      return "{profile} archived the discussion {discussion}.";
+    case ActivityDiscussionSubject.DISCUSSION_DELETED:
+      if (options.isAuthorCurrentActor) {
+        return "You deleted the discussion {discussion}.";
+      }
+      return "{profile} deleted the discussion {discussion}.";
+    default:
+      return undefined;
+  }
+}
diff --git a/js/src/services/activity/event.ts b/js/src/services/activity/event.ts
new file mode 100644
index 000000000..edb3e5339
--- /dev/null
+++ b/js/src/services/activity/event.ts
@@ -0,0 +1,43 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import {
+  ActivityEventCommentSubject,
+  ActivityEventSubject,
+} from "@/types/enums";
+import { IEvent } from "@/types/event.model";
+import { convertActivityOptions } from "./utils";
+
+export function convertEventActivity(
+  activity: IPatchedActivity<IEvent>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityEventSubject.EVENT_CREATED:
+      if (options.isAuthorCurrentActor) {
+        return "You created the event {event}.";
+      }
+      return "The event {event} was created by {profile}.";
+    case ActivityEventSubject.EVENT_UPDATED:
+      if (options.isAuthorCurrentActor) {
+        return "You updated the event {event}.";
+      }
+      return "The event {event} was updated by {profile}.";
+    case ActivityEventSubject.EVENT_DELETED:
+      if (options.isAuthorCurrentActor) {
+        return "You deleted the event {event}.";
+      }
+      return "The event {event} was deleted by {profile}.";
+    case ActivityEventCommentSubject.COMMENT_POSTED:
+      if (activity.subjectParams.comment_reply_to) {
+        if (options.isAuthorCurrentActor) {
+          return "You replied to a comment on the event {event}.";
+        }
+        return "{profile} replied to a comment on the event {event}.";
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You posted a comment on the event {event}.";
+      }
+      return "{profile} posted a comment on the event {event}.";
+    default:
+      return undefined;
+  }
+}
diff --git a/js/src/services/activity/group.ts b/js/src/services/activity/group.ts
new file mode 100644
index 000000000..cb1794f2e
--- /dev/null
+++ b/js/src/services/activity/group.ts
@@ -0,0 +1,24 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import { IGroup } from "@/types/actor";
+import { ActivityGroupSubject } from "@/types/enums";
+import { convertActivityOptions } from "./utils";
+
+export function convertGroupActivity(
+  activity: IPatchedActivity<IGroup>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityGroupSubject.GROUP_CREATED:
+      if (options.isAuthorCurrentActor) {
+        return "You created the group {group}.";
+      }
+      return "{profile} created the group {group}.";
+    case ActivityGroupSubject.GROUP_UPDATED:
+      if (options.isAuthorCurrentActor) {
+        return "You updated the group {group}.";
+      }
+      return "{profile} updated the group {group}.";
+    default:
+      return undefined;
+  }
+}
diff --git a/js/src/services/activity/member.ts b/js/src/services/activity/member.ts
new file mode 100644
index 000000000..12e5bb0d5
--- /dev/null
+++ b/js/src/services/activity/member.ts
@@ -0,0 +1,139 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import { IMember } from "@/types/actor/member.model";
+import { ActivityMemberSubject, MemberRole } from "@/types/enums";
+import { convertActivityOptions } from "./utils";
+
+export function convertMemberActivity(
+  activity: IPatchedActivity<IMember>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityMemberSubject.MEMBER_REQUEST:
+      if (options.isAuthorCurrentActor) {
+        return "You requested to join the group.";
+      }
+      return "{member} requested to join the group.";
+    case ActivityMemberSubject.MEMBER_INVITED:
+      if (options.isAuthorCurrentActor) {
+        return "You invited {member}.";
+      }
+      return "{member} was invited by {profile}.";
+    case ActivityMemberSubject.MEMBER_ADDED:
+      if (options.isAuthorCurrentActor) {
+        return "You added the member {member}.";
+      }
+      return "{profile} added the member {member}.";
+    case ActivityMemberSubject.MEMBER_JOINED:
+      return "{member} joined the group.";
+    case ActivityMemberSubject.MEMBER_UPDATED:
+      if (
+        activity.subjectParams.member_role &&
+        activity.subjectParams.old_role
+      ) {
+        return roleUpdate(activity, options);
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You updated the member {member}.";
+      }
+      return "{profile} updated the member {member}.";
+    case ActivityMemberSubject.MEMBER_REMOVED:
+      if (options.isAuthorCurrentActor) {
+        return "You excluded member {member}.";
+      }
+      return "{profile} excluded member {member}.";
+    case ActivityMemberSubject.MEMBER_QUIT:
+      return "{profile} quit the group.";
+    case ActivityMemberSubject.MEMBER_REJECTED_INVITATION:
+      return "{member} rejected the invitation to join the group.";
+    case ActivityMemberSubject.MEMBER_ACCEPTED_INVITATION:
+      if (options.isAuthorCurrentActor) {
+        return "You accepted the invitation to join the group.";
+      }
+      return "{member} accepted the invitation to join the group.";
+    default:
+      return undefined;
+  }
+}
+
+const MEMBER_ROLE_VALUE: Record<string, number> = {
+  [MemberRole.MEMBER]: 20,
+  [MemberRole.MODERATOR]: 50,
+  [MemberRole.ADMINISTRATOR]: 90,
+  [MemberRole.CREATOR]: 100,
+};
+
+function roleUpdate(
+  activity: IPatchedActivity<IMember>,
+  options: convertActivityOptions
+): string | undefined {
+  if (
+    Object.keys(MEMBER_ROLE_VALUE).includes(
+      activity.subjectParams.member_role
+    ) &&
+    Object.keys(MEMBER_ROLE_VALUE).includes(activity.subjectParams.old_role)
+  ) {
+    if (
+      MEMBER_ROLE_VALUE[activity.subjectParams.member_role] >
+      MEMBER_ROLE_VALUE[activity.subjectParams.old_role]
+    ) {
+      switch (activity.subjectParams.member_role) {
+        case MemberRole.MODERATOR:
+          if (options.isAuthorCurrentActor) {
+            return "You promoted {member} to moderator.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were promoted to moderator by {profile}.";
+          }
+          return "{profile} promoted {member} to moderator.";
+        case MemberRole.ADMINISTRATOR:
+          if (options.isAuthorCurrentActor) {
+            return "You promoted {member} to administrator.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were promoted to administrator by {profile}.";
+          }
+          return "{profile} promoted {member} to administrator.";
+        default:
+          if (options.isAuthorCurrentActor) {
+            return "You promoted the member {member} to an unknown role.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were promoted to an unknown role by {profile}.";
+          }
+          return "{profile} promoted {member} to an unknown role.";
+      }
+    } else {
+      switch (activity.subjectParams.member_role) {
+        case MemberRole.MODERATOR:
+          if (options.isAuthorCurrentActor) {
+            return "You demoted {member} to moderator.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were demoted to moderator by {profile}.";
+          }
+          return "{profile} demoted {member} to moderator.";
+        case MemberRole.MEMBER:
+          if (options.isAuthorCurrentActor) {
+            return "You demoted {member} to simple member.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were demoted to simple member by {profile}.";
+          }
+          return "{profile} demoted {member} to simple member.";
+        default:
+          if (options.isAuthorCurrentActor) {
+            return "You demoted the member {member} to an unknown role.";
+          }
+          if (options.isObjectMemberCurrentActor) {
+            return "You were demoted to an unknown role by {profile}.";
+          }
+          return "{profile} demoted {member} to an unknown role.";
+      }
+    }
+  } else {
+    if (options.isAuthorCurrentActor) {
+      return "You updated the member {member}.";
+    }
+    return "{profile} updated the member {member}";
+  }
+}
diff --git a/js/src/services/activity/post.ts b/js/src/services/activity/post.ts
new file mode 100644
index 000000000..81dd289f7
--- /dev/null
+++ b/js/src/services/activity/post.ts
@@ -0,0 +1,29 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import { ActivityPostSubject } from "@/types/enums";
+import { IPost } from "@/types/post.model";
+import { convertActivityOptions } from "./utils";
+
+export function convertPostActivity(
+  activity: IPatchedActivity<IPost>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityPostSubject.POST_CREATED:
+      if (options.isAuthorCurrentActor) {
+        return "You created the post {post}.";
+      }
+      return "The post {post} was created by {profile}.";
+    case ActivityPostSubject.POST_UPDATED:
+      if (options.isAuthorCurrentActor) {
+        return "You updated the post {post}.";
+      }
+      return "The post {post} was updated by {profile}.";
+    case ActivityPostSubject.POST_DELETED:
+      if (options.isAuthorCurrentActor) {
+        return "You deleted the post {post}.";
+      }
+      return "The post {post} was deleted by {profile}.";
+    default:
+      return undefined;
+  }
+}
diff --git a/js/src/services/activity/resource.ts b/js/src/services/activity/resource.ts
new file mode 100644
index 000000000..3f180004f
--- /dev/null
+++ b/js/src/services/activity/resource.ts
@@ -0,0 +1,70 @@
+import { IPatchedActivity } from "@/types/activity.model";
+import { ActivityResourceSubject } from "@/types/enums";
+import { IResource } from "@/types/resource";
+import { convertActivityOptions } from "./utils";
+
+export function convertResourceActivity(
+  activity: IPatchedActivity<IResource>,
+  options: convertActivityOptions
+): string | undefined {
+  switch (activity.subject) {
+    case ActivityResourceSubject.RESOURCE_CREATED:
+      if (activity?.object?.type === "folder") {
+        if (options.isAuthorCurrentActor) {
+          return "You created the folder {resource}.";
+        }
+        return "{profile} created the folder {resource}.";
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You created the resource {resource}.";
+      }
+      return "{profile} created the resource {resource}.";
+    case ActivityResourceSubject.RESOURCE_MOVED:
+      if (activity?.object?.type === "folder") {
+        if (options.parentDirectory === null) {
+          if (options.isAuthorCurrentActor) {
+            return "You moved the folder {resource} to the root folder.";
+          }
+          return "{profile} moved the folder {resource} to the root folder.";
+        }
+        if (options.isAuthorCurrentActor) {
+          return "You moved the folder {resource} into {new_path}.";
+        }
+        return "{profile} moved the folder {resource} into {new_path}.";
+      }
+      if (options.parentDirectory === null) {
+        if (options.isAuthorCurrentActor) {
+          return "You moved the resource {resource} to the root folder.";
+        }
+        return "{profile} moved the resource {resource} to the root folder.";
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You moved the resource {resource} into {new_path}.";
+      }
+      return "{profile} moved the resource {resource} into {new_path}.";
+    case ActivityResourceSubject.RESOURCE_UPDATED:
+      if (activity?.object?.type === "folder") {
+        if (options.isAuthorCurrentActor) {
+          return "You renamed the folder from {old_resource_title} to {resource}.";
+        }
+        return "{profile} renamed the folder from {old_resource_title} to {resource}.";
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You renamed the resource from {old_resource_title} to {resource}.";
+      }
+      return "{profile} renamed the resource from {old_resource_title} to {resource}.";
+    case ActivityResourceSubject.RESOURCE_DELETED:
+      if (activity?.object?.type === "folder") {
+        if (options.isAuthorCurrentActor) {
+          return "You deleted the folder {resource}.";
+        }
+        return "{profile} deleted the folder {resource}.";
+      }
+      if (options.isAuthorCurrentActor) {
+        return "You deleted the resource {resource}.";
+      }
+      return "{profile} deleted the resource {resource}.";
+    default:
+      return undefined;
+  }
+}
diff --git a/js/src/services/activity/utils.ts b/js/src/services/activity/utils.ts
new file mode 100644
index 000000000..3c89c9789
--- /dev/null
+++ b/js/src/services/activity/utils.ts
@@ -0,0 +1,19 @@
+import { IActivity } from "@/types/activity.model";
+
+export function reduceSubjectParams(
+  activity: IActivity
+): Record<string, string> {
+  return activity.subjectParams.reduce(
+    (acc: Record<string, string>, { key, value }) => {
+      acc[key] = value;
+      return acc;
+    },
+    {}
+  );
+}
+
+export type convertActivityOptions = {
+  isAuthorCurrentActor?: boolean;
+  isObjectMemberCurrentActor?: boolean;
+  parentDirectory?: string | undefined | null;
+};
diff --git a/js/src/types/activity.model.ts b/js/src/types/activity.model.ts
index c5c218757..f1cae9f63 100644
--- a/js/src/types/activity.model.ts
+++ b/js/src/types/activity.model.ts
@@ -23,6 +23,7 @@ export type ActivitySubject =
   | ActivityGroupSubject
   | ActivityEventCommentSubject;
 
+export type IActivityObject = IEvent | IPost | IGroup | IMember | IResource;
 export interface IActivity {
   id: string;
   type: ActivityType;
@@ -30,6 +31,12 @@ export interface IActivity {
   subjectParams: { key: string; value: string }[];
   author: IActor;
   group: IGroup;
-  object: IEvent | IPost | IGroup | IMember | IResource;
+  object: IActivityObject;
   insertedAt: string;
 }
+
+export interface IPatchedActivity<T>
+  extends Omit<IActivity, "subjectParams" | "object"> {
+  subjectParams: Record<string, string>;
+  object: T;
+}