diff --git a/src/lib/hash-params.test.ts b/src/lib/hash-params.test.ts
index fad47e7d3..77b4b8500 100644
--- a/src/lib/hash-params.test.ts
+++ b/src/lib/hash-params.test.ts
@@ -22,6 +22,9 @@ test('getHashParams', () => {
   expect(getHashParams('#title=hello%20world')).toEqual({
     title: 'hello world',
   })
+  expect(getHashParams('#profileAccepts=application%2Fjson')).toEqual({
+    profileAccepts: 'application/json',
+  })
   expect(getHashParams('#abc=bcd')).toEqual({})
   expect(getHashParams('garbage')).toEqual({})
 })
diff --git a/src/lib/hash-params.ts b/src/lib/hash-params.ts
index 6d6ca3e5a..e68c80639 100644
--- a/src/lib/hash-params.ts
+++ b/src/lib/hash-params.ts
@@ -2,6 +2,7 @@ import {ViewMode} from '../lib/view-mode'
 
 export interface HashParams {
   profileURL?: string
+  profileAccepts?: string
   title?: string
   localProfilePath?: string
   viewMode?: ViewMode
@@ -36,6 +37,8 @@ export function getHashParams(hashContents = window.location.hash): HashParams {
         result.title = value
       } else if (key === 'localProfilePath') {
         result.localProfilePath = value
+      } else if (key === 'profileAccepts') {
+        result.profileAccepts = value
       } else if (key === 'view') {
         const mode = getViewMode(value)
         if (mode !== null) {
diff --git a/src/views/application.tsx b/src/views/application.tsx
index d3fba1547..980510fab 100644
--- a/src/views/application.tsx
+++ b/src/views/application.tsx
@@ -424,7 +424,7 @@ export class Application extends StatelessComponent<ApplicationProps> {
   }
 
   async maybeLoadHashParamProfile() {
-    const {profileURL} = this.props.hashParams
+    const {profileURL, profileAccepts} = this.props.hashParams
     if (profileURL) {
       if (!canUseXHR) {
         alert(
@@ -433,7 +433,14 @@ export class Application extends StatelessComponent<ApplicationProps> {
         return
       }
       this.loadProfile(async () => {
-        const response: Response = await fetch(profileURL)
+        const fetchOpts: RequestInit = {}
+        if (profileAccepts) {
+          fetchOpts['headers'] = {
+            Accept: profileAccepts,
+          }
+        }
+
+        const response: Response = await fetch(profileURL, fetchOpts)
         let filename = new URL(profileURL, window.location.href).pathname
         if (filename.includes('/')) {
           filename = filename.slice(filename.lastIndexOf('/') + 1)