diff --git a/.env.example b/.env.example
index 0c60a31..f1eb495 100644
--- a/.env.example
+++ b/.env.example
@@ -11,7 +11,13 @@
# 可选；不填可在设置页配置。若在此填写则覆盖后台设置
# ALLOWED_REFERER_HOSTS=example.com,www.example.com
-# 图片直链域名（可选；不填则使用请求域名，也可在设置页配置）
+# 管理后台域名（可选；不填则使用当前请求域名，也可在设置页配置）
+# SITE_BASE_URL=https://admin.example.com
+
+# 隐藏图片直链中的目录前缀（如 images/2026/08/a.webp → 2026/08/a.webp）
+# HIDE_FOLDER_IN_URL=false
+
+# 图片直链域名（可选；不填则使用当前请求域名，也可在设置页配置）
# IMAGE_BASE_URL=https://pic.example.com
# 图片存储目录（默认 ./data，容器内为 /data）
diff --git a/.gitignore b/.gitignore
index 56125a0..5a87dc4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,6 @@ data
# 本地 Git hooks 模板（仅安装在 .git/hooks/，不进仓库）
git-hooks/
-# 飞牛 fpk 工程与产物（仅本地维护，不进仓库）
-scripts/fpk/
+# 本地维护脚本（assign-image-owner、fpk 打包等，不进仓库）
+scripts/
dist-fpk/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 795162a..73218dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,27 @@
本仓库自 **v1.0.0** 起作为正式版维护；此前历史提交已归档重置。
+## [1.1.3] - 2026-08-27
+
+### 新增
+
+- 后台与图片域名分离（`SITE_BASE_URL` / `IMAGE_BASE_URL`）：单实例双域名，Host 中间件隔离图片域非图片路径
+- `/setup` 与系统设置支持启用/关闭域名分离，设置页可后续关闭并恢复单域
+- 可选隐藏外链中的 `images/` 前缀（多文件夹时确认提示）
+- 设置页加载时检测 GitHub 最新版本并提示更新
+- 双域名部署文档（Nginx / Lucky / 本地 hosts 测试）：`docs/domain-separation.md`
+
+### 改进
+
+- 双域名下防盗链自动放行网站域与图片域主机名
+- 开发服务器默认绑定 `127.0.0.1:3000`，便于 hosts 双域本地测试
+- API 文档补充自定义文件夹的 cURL 示例
+
+### 其他
+
+- 许可证变更为 GPL-3.0-only
+- `scripts/` 目录改为本地维护，不再纳入仓库
+
## [1.1.2] - 2026-08-26
### 新增
diff --git a/LICENSE b/LICENSE
index e924e4d..b912b2c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,21 +1,690 @@
-MIT License
+PicHost - Self-hosted image hosting
+Copyright (C) 2026 O96u
-Copyright (c) 2026 O96u
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License version 3 as
+published by the Free Software Foundation.
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+================================================================================
+
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+ Version 3, 29 June 2007
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+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
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+
+ If, pursuant to or in connection with a single transaction or
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+you grant is automatically extended to all recipients of the covered
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+
+ A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License. You may not convey a covered
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+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
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+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
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+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ PicHost - Self-hosted image hosting
+ Copyright (C) 2026 O96u
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 3 as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/README.en.md b/README.en.md
index 92931ce..cfad7bd 100644
--- a/README.en.md
+++ b/README.en.md
@@ -13,7 +13,7 @@
-
+
@@ -32,7 +32,7 @@
| Branch | Notes |
| ------ | ----- |
-| [**main**](https://github.com/O96u/PicHost/tree/main) (default) | **v1.1.2** — local disk + multi-backend object storage (R2 / COS / OSS / AWS), [`/storage`](docs/README.md) UI, hybrid URLs |
+| [**main**](https://github.com/O96u/PicHost/tree/main) (default) | **v1.1.3** — local disk + multi-backend storage, dual-domain separation, [`/storage`](docs/README.md) UI, hybrid URLs |
| [**cloudflare**](https://github.com/O96u/PicHost/tree/cloudflare) | **Cloudflare R2–only line** — streamlined for deployments that use R2 exclusively |
Use **main** for the full product and multiple cloud backends.
@@ -176,7 +176,42 @@ Full docs and copyable cURL snippets are on the **API** page after deployment.
- Proxy to port **6892**; HTTPS recommended
- Nginx: `client_max_body_size` ≥ 12m
-- Set `IMAGE_BASE_URL` for public access
+- Set `IMAGE_BASE_URL` (single domain) or `SITE_BASE_URL` + `IMAGE_BASE_URL` (dual-domain separation)
+
+### Recommended architecture (dual domains)
+
+**One Docker instance + two domains**, both fully proxied to `6892` (isolation via PicHost middleware):
+
+```nginx
+# admin.example.com — admin + API + images
+server {
+ server_name admin.example.com;
+ location / {
+ proxy_pass http://127.0.0.1:6892;
+ proxy_set_header Host $host;
+ proxy_set_header X-Forwarded-Proto $scheme;
+ client_max_body_size 12m;
+ }
+}
+
+# pic.example.com — same full proxy; PicHost middleware blocks non-image paths
+server {
+ server_name pic.example.com;
+ location / {
+ proxy_pass http://127.0.0.1:6892;
+ proxy_set_header Host $host;
+ proxy_set_header X-Forwarded-Proto $scheme;
+ }
+}
+```
+
+FN NAS [Lucky](https://github.com/gdy666/lucky) reverse proxy (public hostname → backend `http://:6892`):
+
+| Site domain (admin) | Image domain |
+| :-----------------: | :----------: |
+|  |  |
+
+See **[docs/domain-separation.en.md](docs/domain-separation.en.md)** for Caddy/NPM notes, env vars, and setup fields.
## Development
@@ -193,7 +228,8 @@ npm test # Unit tests
| Version | Plan |
| ---------- | -------------------------------------------------------------- |
-| **v1.1.2** | Activity logs, gallery storage filter, upload rate limits (current `main`) |
+| **v1.1.3** | Dual-domain separation, optional `images/` URL prefix, update check (current `main`) |
+| **v1.1.2** | Activity logs, gallery storage filter, upload rate limits |
| **v1.1.1** | Session check fixes, storage placeholder cleanup, Docker logging |
| **v1.1.0** | Multi-backend object storage, hybrid URLs, storage UI |
| **v1.0.4** | Password visibility toggle, legacy ADMIN_SECRET migration |
@@ -204,7 +240,7 @@ npm test # Unit tests
## License
-[MIT](LICENSE)
+[GPL-3.0](LICENSE)
## Friend links
diff --git a/README.md b/README.md
index 833dbc3..458017b 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
-
+
- 
+ 