diff --git a/pkg/models/attachments.go b/pkg/models/attachments.go
index aa31c1b..da1de5c 100644
--- a/pkg/models/attachments.go
+++ b/pkg/models/attachments.go
@@ -9,14 +9,15 @@ import (
 type Attachment struct {
 	BaseModel
 
-	FileID   string  `json:"file_id"`
-	Filesize int64   `json:"filesize"`
-	Filename string  `json:"filename"`
-	Mimetype string  `json:"mimetype"`
-	Post     *Post   `json:"post"`
-	Author   Account `json:"author"`
-	PostID   *uint   `json:"post_id"`
-	AuthorID uint    `json:"author_id"`
+	FileID      string  `json:"file_id"`
+	Filesize    int64   `json:"filesize"`
+	Filename    string  `json:"filename"`
+	Mimetype    string  `json:"mimetype"`
+	ExternalUrl string  `json:"external_url"`
+	Post        *Post   `json:"post"`
+	Author      Account `json:"author"`
+	PostID      *uint   `json:"post_id"`
+	AuthorID    uint    `json:"author_id"`
 }
 
 func (v Attachment) GetStoragePath() string {
diff --git a/pkg/view/src/components/PostAttachments.tsx b/pkg/view/src/components/PostAttachments.tsx
index 9009cf8..2aad7b6 100644
--- a/pkg/view/src/components/PostAttachments.tsx
+++ b/pkg/view/src/components/PostAttachments.tsx
@@ -14,7 +14,7 @@ export default function PostAttachments(props: { attachments: any[] }) {
   }
 
   function getUrl(item: any): string {
-    return `/api/attachments/o/${item.file_id}`;
+    return item.external_url ?? `/api/attachments/o/${item.file_id}`;
   }
 
   createEffect(() => {
@@ -36,8 +36,8 @@ export default function PostAttachments(props: { attachments: any[] }) {
               <i class="fa-solid fa-circle-question text-3xl"></i>
               <p class="mt-3">{item().filename}</p>
 
-              <div class="flex gap-3 w-full">
-                <p class="text-sm">{item().filesize} Bytes</p>
+              <div class="flex gap-2 w-full">
+                <p class="text-sm">{item().filesize <= 0 ? "Unknown" : item().filesize} Bytes</p>
                 <p class="text-sm">{item().mimetype}</p>
               </div>
 
diff --git a/pkg/view/src/components/PostPublish.tsx b/pkg/view/src/components/PostPublish.tsx
index 6c32154..9a8d0a2 100644
--- a/pkg/view/src/components/PostPublish.tsx
+++ b/pkg/view/src/components/PostPublish.tsx
@@ -1,4 +1,4 @@
-import { createEffect, createSignal, For, Show } from "solid-js";
+import { createEffect, createSignal, For, Match, Show, Switch } from "solid-js";
 import { getAtk, useUserinfo } from "../stores/userinfo.tsx";
 
 import styles from "./PostPublish.module.css";
@@ -22,6 +22,8 @@ export default function PostPublish(props: {
   const [categories, setCategories] = createSignal<{ alias: string, name: string }[]>([]);
   const [tags, setTags] = createSignal<{ alias: string, name: string }[]>([]);
 
+  const [attachmentMode, setAttachmentMode] = createSignal(0);
+
   createEffect(() => {
     setAttachments(props.editing?.attachments ?? []);
     setCategories(props.editing?.categories ?? []);
@@ -101,7 +103,7 @@ export default function PostPublish(props: {
     setSubmitting(false);
   }
 
-  async function uploadAttachments(evt: SubmitEvent) {
+  async function uploadAttachment(evt: SubmitEvent) {
     evt.preventDefault();
 
     const form = evt.target as HTMLFormElement;
@@ -125,6 +127,19 @@ export default function PostPublish(props: {
     setUploading(false);
   }
 
+  function addAttachment(evt: SubmitEvent) {
+    evt.preventDefault();
+
+    const form = evt.target as HTMLFormElement;
+    const data = Object.fromEntries(new FormData(form));
+
+    setAttachments(attachments().concat([{
+      ...data,
+      author_id: userinfo?.profiles?.id,
+    }]));
+    form.reset();
+  }
+
   function addCategory(evt: SubmitEvent) {
     evt.preventDefault();
 
@@ -138,7 +153,7 @@ export default function PostPublish(props: {
   }
 
   function removeCategory(target: any) {
-    setCategories(categories().filter(item => item.alias !== target.alias))
+    setCategories(categories().filter(item => item.alias !== target.alias));
   }
 
   function addTag(evt: SubmitEvent) {
@@ -154,7 +169,7 @@ export default function PostPublish(props: {
   }
 
   function removeTag(target: any) {
-    setTags(tags().filter(item => item.alias !== target.alias))
+    setTags(tags().filter(item => item.alias !== target.alias));
   }
 
   function resetForm() {
@@ -270,23 +285,60 @@ export default function PostPublish(props: {
       <dialog id="attachments" class="modal">
         <div class="modal-box">
           <h3 class="font-bold text-lg mx-1">Attachments</h3>
-          <form class="w-full mt-3" onSubmit={uploadAttachments}>
-            <label class="form-control">
-              <div class="label">
-                <span class="label-text">Pick a file</span>
-              </div>
-              <div class="join">
-                <input required type="file" name="attachment"
-                       class="join-item file-input file-input-bordered w-full" />
-                <button type="submit" class="join-item btn btn-primary" disabled={uploading()}>
-                  <i class="fa-solid fa-upload"></i>
-                </button>
-              </div>
-              <div class="label">
-                <span class="label-text-alt">Click upload to add this file into list</span>
-              </div>
-            </label>
-          </form>
+
+          <div role="tablist" class="tabs tabs-boxed mt-3">
+            <input type="radio" name="attachment" role="tab" class="tab" aria-label="File picker"
+                   checked={attachmentMode() === 0} onClick={() => setAttachmentMode(0)} />
+            <input type="radio" name="attachment" role="tab" class="tab" aria-label="External link"
+                   checked={attachmentMode() === 1} onClick={() => setAttachmentMode(1)} />
+          </div>
+
+          <Switch>
+            <Match when={attachmentMode() === 0}>
+              <form class="w-full mt-2" onSubmit={uploadAttachment}>
+                <label class="form-control">
+                  <div class="label">
+                    <span class="label-text">Pick a file</span>
+                  </div>
+                  <div class="join">
+                    <input required type="file" name="attachment"
+                           class="join-item file-input file-input-bordered w-full" />
+                    <button type="submit" class="join-item btn btn-primary" disabled={uploading()}>
+                      <i class="fa-solid fa-upload"></i>
+                    </button>
+                  </div>
+                  <div class="label">
+                    <span class="label-text-alt">Click upload to add this file into list</span>
+                  </div>
+                </label>
+              </form>
+            </Match>
+            <Match when={attachmentMode() === 1}>
+              <form class="w-full mt-2" onSubmit={addAttachment}>
+                <label class="form-control">
+                  <div class="label">
+                    <span class="label-text">Attach an external file</span>
+                  </div>
+                  <div class="join">
+                    <input required type="text" name="mimetype" class="join-item input input-bordered w-full"
+                           placeholder="Mimetype" />
+                    <input required type="text" name="filename" class="join-item input input-bordered w-full"
+                           placeholder="Name" />
+                  </div>
+                  <div class="join">
+                    <input required type="text" name="external_url" class="join-item input input-bordered w-full"
+                           placeholder="External URL" />
+                    <button type="submit" class="join-item btn btn-primary">
+                      <i class="fa-solid fa-plus"></i>
+                    </button>
+                  </div>
+                  <div class="label">
+                    <span class="label-text-alt">Click add button to add it into list</span>
+                  </div>
+                </label>
+              </form>
+            </Match>
+          </Switch>
 
           <Show when={attachments().length > 0}>
             <h3 class="font-bold mt-3 mx-1">Attachment list</h3>
diff --git a/pkg/view/src/layouts/shared/Navbar.tsx b/pkg/view/src/layouts/shared/Navbar.tsx
index 7b238da..6c0baae 100644
--- a/pkg/view/src/layouts/shared/Navbar.tsx
+++ b/pkg/view/src/layouts/shared/Navbar.tsx
@@ -11,7 +11,8 @@ interface MenuItem {
 
 export default function Navbar() {
   const nav: MenuItem[] = [
-    { label: "Feed", href: "/" }
+    { label: "Feed", href: "/" },
+    { label: "Realms", href: "/realms" }
   ];
 
   const wellKnown = useWellKnown();