diff --git a/dist/buildinfo.json b/dist/buildinfo.json
index 21f0657b0..3f22fd61c 100644
--- a/dist/buildinfo.json
+++ b/dist/buildinfo.json
@@ -1 +1 @@
-{"sha":"239539c","timestamp":1732966958}
\ No newline at end of file
+{"sha":"84e3212","timestamp":1733984023}
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
index 68b75217e..4a9e6e2e9 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -7,7 +7,7 @@ class EnvironmentConfig {
   DEFAULT_PARSE_MODE = "Markdown";
   TELEGRAM_MIN_STREAM_INTERVAL = 0;
   TELEGRAM_PHOTO_SIZE_OFFSET = 1;
-  TELEGRAM_IMAGE_TRANSFER_MODE = "url";
+  TELEGRAM_IMAGE_TRANSFER_MODE = "base64";
   MODEL_LIST_COLUMNS = 1;
   I_AM_A_GENEROUS_PERSON = false;
   CHAT_WHITE_LIST = [];
@@ -192,8 +192,8 @@ class ConfigMerger {
     }
   }
 }
-const BUILD_TIMESTAMP = 1732966958;
-const BUILD_VERSION = "239539c";
+const BUILD_TIMESTAMP = 1733984023;
+const BUILD_VERSION = "84e3212";
 function createAgentUserConfig() {
   return Object.assign(
     {},
@@ -880,8 +880,6 @@ function getImageFormatFromBase64(base64String) {
       return "jpeg";
     case "i":
       return "png";
-    case "R":
-      return "gif";
     case "U":
       return "webp";
     default:
@@ -896,6 +894,9 @@ async function imageToBase64String(url) {
     format: `image/${format}`
   };
 }
+function renderBase64DataURI(params) {
+  return `data:${params.format};base64,${params.data}`;
+}
 class Stream {
   response;
   controller;
@@ -1366,8 +1367,8 @@ async function renderOpenAIMessage(item, supportImage) {
             const data = extractImageContent(content.image);
             if (data.url) {
               if (ENV.TELEGRAM_IMAGE_TRANSFER_MODE === "base64") {
-                contents.push(await imageToBase64String(data.url).then(({ data: data2 }) => {
-                  return { type: "image_url", image_url: { url: data2 } };
+                contents.push(await imageToBase64String(data.url).then((data2) => {
+                  return { type: "image_url", image_url: { url: renderBase64DataURI(data2) } };
                 }));
               } else {
                 contents.push({ type: "image_url", image_url: { url: data.url } });
diff --git a/packages/lib/core/src/agent/openai.ts b/packages/lib/core/src/agent/openai.ts
index 8cddcde35..cfa00daf7 100644
--- a/packages/lib/core/src/agent/openai.ts
+++ b/packages/lib/core/src/agent/openai.ts
@@ -8,7 +8,7 @@ import type {
     LLMChatParams,
 } from './types';
 import { ENV } from '#/config';
-import { imageToBase64String } from '#/utils/image';
+import { imageToBase64String, renderBase64DataURI } from '#/utils/image';
 import { requestChatCompletions } from './request';
 import { convertStringToResponseMessages, extractImageContent, loadModelsList } from './utils';
 
@@ -29,8 +29,8 @@ async function renderOpenAIMessage(item: HistoryItem, supportImage?: boolean): P
                         const data = extractImageContent(content.image);
                         if (data.url) {
                             if (ENV.TELEGRAM_IMAGE_TRANSFER_MODE === 'base64') {
-                                contents.push(await imageToBase64String(data.url).then(({ data }) => {
-                                    return { type: 'image_url', image_url: { url: data } };
+                                contents.push(await imageToBase64String(data.url).then((data) => {
+                                    return { type: 'image_url', image_url: { url: renderBase64DataURI(data) } };
                                 }));
                             } else {
                                 contents.push({ type: 'image_url', image_url: { url: data.url } });
diff --git a/packages/lib/core/src/config/config.ts b/packages/lib/core/src/config/config.ts
index 3adfc4ef6..42085031c 100644
--- a/packages/lib/core/src/config/config.ts
+++ b/packages/lib/core/src/config/config.ts
@@ -21,7 +21,7 @@ export class EnvironmentConfig {
     // 默认选择次低质量的图片
     TELEGRAM_PHOTO_SIZE_OFFSET = 1;
     // 向LLM优先传递图片方式：url, base64
-    TELEGRAM_IMAGE_TRANSFER_MODE = 'url';
+    TELEGRAM_IMAGE_TRANSFER_MODE = 'base64';
     // 模型列表列数
     MODEL_LIST_COLUMNS = 1;
 
diff --git a/packages/lib/core/src/config/version.ts b/packages/lib/core/src/config/version.ts
index 6151c9472..f946bd927 100644
--- a/packages/lib/core/src/config/version.ts
+++ b/packages/lib/core/src/config/version.ts
@@ -1,2 +1,2 @@
-export const BUILD_TIMESTAMP = 1732966958;
-export const BUILD_VERSION = '239539c';
+export const BUILD_TIMESTAMP = 1733984023;
+export const BUILD_VERSION = '84e3212';
diff --git a/packages/lib/core/src/utils/image/index.ts b/packages/lib/core/src/utils/image/index.ts
index 021abdb6a..2334cc99c 100644
--- a/packages/lib/core/src/utils/image/index.ts
+++ b/packages/lib/core/src/utils/image/index.ts
@@ -37,8 +37,6 @@ function getImageFormatFromBase64(base64String: string): string {
             return 'jpeg';
         case 'i':
             return 'png';
-        case 'R':
-            return 'gif';
         case 'U':
             return 'webp';
         default: