smallnest Feishu Upload Image
Upload images to Feishu/Lark and get the image_key for use in messages.
Usage
Upload from Local File
python3 ./scripts/upload_image.py /path/to/image.jpg
Upload via HTTP
python3 ./scripts/upload_image.py --type message --image-type message https://example.com/image.jpg
Upload from Base64
python3 ./scripts/upload_image.py --base64 "iVBORw0KGgoAAAANS..."
Options
| Option | Description | Default |
|---|---|---|
| `--type message | avatar` | Image usage type |
| `--image-type message | avatar` | Same as --type |
Limits
- Max file size: 10MB
- Supported formats: JPEG, PNG, WEBP, GIF, TIFF, BMP, ICO
- GIF resolution ≤ 2000×2000
- Other formats ≤ 12000×12000
Response
Returns image_key which can be used in Feishu messages:
{
"code": 0,
"data": {
"image_key": "img_v2_xxx"
}
}
发送图片消息指南
获取必要信息
- 飞书访问令牌 (tenant_access_token 或 app_access_token)
- 接收者ID (open_id, user_id, chat_id, 或 email)
发送图片消息API
方式1：直接发送图片消息
curl -X POST https://open.feishu.cn/open-apis/im/v1/messages \
-H "Authorization: Bearer {access_token}" \
-H "Content-Type: application/json" \
-d '{
"receive_id": "{chat_id}",
"msg_type": "image",
"content": "{\"image_key\":\"{image_key}\"}"
}'
方式2：在富文本中嵌入图片
curl -X POST https://open.feishu.cn/open-apis/im/v1/messages \
-H "Authorization: Bearer {access_token}" \
-H "Content-Type: application/json" \
-d '{
"receive_id": "{chat_id}",
"msg_type": "post",
"content": "{\"post\":{\"zh_cn\":{\"title\":\"图片消息\",\"content\":[[{\"tag\":\"img\",\"image_key\":\"{image_key}\"}]]}}}"
}'
获取群聊chat_id
- 在飞书中打开群聊，查看URL中的chat_id
- 或者通过API查询群聊列表：
curl -X GET https://open.feishu.cn/open-apis/im/v1/chats \
-H "Authorization: Bearer {access_token}"
实践经验
- 上传图片后获得
image_key，有效期通常为7天 - 使用前需确保有正确的访问令牌权限
- 发送消息需要
im:message:send_as_bot权限 - 建议先上传图片，再发送消息，两步操作分离