diff --git a/README.md b/README.md
index 76c0c04..c3ccdcf 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,10 @@ All settings for endpoints are configured in query parameters.
 - `identifier`: Bluesky handle
 - `password`: Bluesky password - create an app password in settings
 
+### `/gravatar`
+
+- `cookie`: Your `gravatar` cookie.
+
 ### `/misskey`
 
 - `instance`: Link to your Misskey instance. Include protocol.
diff --git a/src/translators/gravatar.ts b/src/translators/gravatar.ts
new file mode 100644
index 0000000..2b17bac
--- /dev/null
+++ b/src/translators/gravatar.ts
@@ -0,0 +1,80 @@
+import { z } from "zod"
+import { translator } from "../lib/types.js"
+import downloadAvatarForPayload from "../lib/downloadAvatarForPayload.js"
+export default translator({
+    query: z.object({
+        cookie: z.string().describe("Your `gravatar` cookie."),
+    }),
+    async execute(payload, { cookie }) {
+        // unsure regarding supported image formats;
+        // just to play it safe, prefer png then jpeg
+
+        const avatar = await downloadAvatarForPayload(payload, [
+            "png",
+            "jpeg",
+            undefined,
+        ])
+
+        if (!avatar) throw new Error("gravatar: failed to get avatar")
+
+        const Cookie = `gravatar=${encodeURIComponent(cookie)}; is-logged-in=1`
+
+        // construct fd
+        const fd = new FormData()
+        fd.append("image", avatar)
+        fd.append("source", "direct")
+        fd.append("forceIdentity", "false")
+
+        // upload the avatar
+
+        const uploadResult = await fetch(
+            "https://api.gravatar.com/v2/users/me/image",
+            {
+                body: fd,
+                method: "POST",
+                headers: { Cookie },
+            }
+        )
+
+        if (!uploadResult.ok)
+            throw new Error(
+                `gravatar: upload failed with ${uploadResult.status}`
+            )
+
+        const {
+            email_hash,
+            image_id,
+        }: { email_hash: string; image_id: string } = await uploadResult.json()
+
+        // set its alt text
+
+        if (payload.altText) {
+            let req = await fetch(
+                `https://api.gravatar.com/v2/users/me/image/${image_id}`,
+                {
+                    method: "POST",
+                    body: JSON.stringify({ altText: payload.altText }),
+                    headers: { Cookie },
+                }
+            )
+            if (!req.ok)
+                console.warn(`gravatar: alt text set failed with ${req.status}`)
+        }
+
+        // set it as user avatar
+
+        const setUserAvatarResult = await fetch(
+            `/v2/users/me/identity/${email_hash}`,
+            {
+                method: "POST",
+                body: JSON.stringify({ image_id }),
+                headers: { Cookie },
+            }
+        )
+
+        if (!setUserAvatarResult.ok)
+            throw new Error(
+                `gravatar: set user avatar failed with ${setUserAvatarResult.status}`
+            )
+    },
+})