diff --git a/HOWTO-Test-Locally.md b/HOWTO-Test-Locally.md
index e2da7bf83..ec9a48c5b 100644
--- a/HOWTO-Test-Locally.md
+++ b/HOWTO-Test-Locally.md
@@ -2,13 +2,59 @@
 
 ## Compiling
 
-WebUI is compiled with the "gulp" packager program that runs on top of nodejs.  Search the
-web for how to install nodejs and gulp on your system.  Once gulp is present, run this in
-the top-level directory.
+WebUI is compiled with the "gulp" packager program (https://gulpjs.com/docs/en/getting-started/quick-start) that runs on top of nodejs.
 
+
+Complete process for building using CMD (run as administrator) on Windows 11:
+
+You may need to change Windows security settings temporarily using Powershell (run as admin)
+```
+Get-ExecutionPolicy -List
+Set-ExecutionPolicy RemoteSigned -Scope Process
+```
+Press 'y'
+
+Install gulp
+```
+npm install --global gulp-cli
+```
+Go to the folder you want:
+```
+cd C:\Users\your\folder
+```
+Clone the repo
+```
+git clone https://github.com/MitchBradley/ESP3D-WEBUI.git
+```
+Go to the root
+```
+cd ESP3D-WEBUI
+```
+Update the line in package.json from 0.0.1 to:
+```
+"gulp-filesize": "^0.0.6",
 ```
-$ gulp package --lang en
+Install dependencies
 ```
+npm install
+```
+Get submodule updates
+```
+git submodule update --init
+```
+Build the index.html.gz
+```
+gulp package --lang en
+```
+
+Revert the security settings in Powershell
+```
+Set-ExecutionPolicy Restricted -Scope Process
+Get-ExecutionPolicy -List
+```
+
+
+
 
 That will create an "index.html.gz" file in the top directory, and an non-compressed
 version in "dist/index.html".
@@ -24,6 +70,12 @@ You can upload index.html.gz to a FluidNC ESP32 machine and run it
 from there by browsing to the FluidNC IP address.  That is the normal
 way of using WebUI.
 
+If you're testing on a physical FluidNC machine and you break the page, you can delete the old index.html.gz file in the terminal serial monitor using
+```
+$Localfs/Delete=index.html.gz
+```
+Refreshing the page will give a default page that allows you to upload a new file
+
 Alternatively, for a quicker test of a new build, you can avoid the upload step by
 starting a proxy server with: