diff --git a/doc.md b/doc.md
index 8afae69..b496ede 100644
--- a/doc.md
+++ b/doc.md
@@ -228,7 +228,9 @@ You're running the test on localhost, therefore it is trying to measure the spee
Make sure your server is sending the ```Connection:keep-alive``` header
## Using the test without PHP
-If your server does not support PHP, or you're using something newer like Node.js, you can still use this test by replacing `garbage.php`, `empty.php` and `getIP.php` with equivalents.
+If your server **does not support PHP**, maybe you have only **nginx** for static files, or you're using something newer like **Node.js**, you can still use this test by replacing `garbage.php`, `empty.php` and `getIP.php` with equivalents.
+
+For **nginx** see comments below and [example 9](example9_no_backend.html#L115)
### Replacements
@@ -241,12 +243,34 @@ If you're using Node.js or some other server, your replacement should accept the
It is important here to turn off compression, and generate incompressible data.
A symlink to `/dev/urandom` is also ok.
+**nginx**
+Use tool above to generate static known file size. Upload to server so it is available something like `/speedtest/20MB.file`
+
+
#### Replacement for `empty.php`
Your replacement must simply respond with a HTTP code 200 and send nothing else. You may want to send additional headers to disable caching. The test assumes that Connection:keep-alive is sent by the server.
+**nginx**
+1. Increase allowed POST body size
+2. Create empty text file `empty.file`
+3. Allow HTTP POST method to static/empty file and return HTTP 200 even nothing is saved or processed by server
+```nginx
+location /speedtest/empty.file {
+ client_max_body_size 30M;
+ error_page 405 =200 $uri;
+}
+```
+
#### Replacement for `getIP.php`
Your replacement must simply respond with the client's IP as plaintext. Nothing fancy.
+**nginx**
+```nginx
+location /speedtest/getip {
+ return 200 $remote_addr;
+}
+```
+
#### JS
You need to start the test with your replacements like this:
diff --git a/empty.file b/empty.file
new file mode 100644
index 0000000..49cc8ef
Binary files /dev/null and b/empty.file differ
diff --git a/example9_no_backend.html b/example9_no_backend.html
new file mode 100644
index 0000000..ed6834a
--- /dev/null
+++ b/example9_no_backend.html
@@ -0,0 +1,122 @@
+
+
+
+
+
+
+ Speedtest
+
+
+
+
+
+
+