diff --git a/demo.jpg b/images/demo.jpg
similarity index 100%
rename from demo.jpg
rename to images/demo.jpg
diff --git a/demo2.jpg b/images/demo2.jpg
similarity index 100%
rename from demo2.jpg
rename to images/demo2.jpg
diff --git a/demo_changes.png b/images/demo_changes.png
similarity index 100%
rename from demo_changes.png
rename to images/demo_changes.png
diff --git a/demo_changes2.jpg b/images/demo_changes2.jpg
similarity index 100%
rename from demo_changes2.jpg
rename to images/demo_changes2.jpg
diff --git a/readme.md b/readme.md
index 482a790..dab89b7 100644
--- a/readme.md
+++ b/readme.md
@@ -2,7 +2,7 @@
 
 A digital implementation of **strip photography** (also called **slit photography**) that captures a two-dimensional image as a sequence of one-dimensional images over time.
 
-![demo](demo2.jpg)
+![demo](images/demo2.jpg)
 
 Strip photography records a moving scene over time by extracting the same line position from each video frame and assembling them into a composite image where:
 - One axis represents **space** (the slit/line being observed)
@@ -61,7 +61,7 @@ uv run main.py .\line500fps32pix.mp4 --video --alpha --no-parallel
 uv run main.py .\line500fps32pix.mp4 --debug
 ```
 Output: `results/debug/line500fps32pix_7c91_t0_01_changes.png`
-![debug view](demo_changes2.jpg)
+![debug view](images/demo_changes2.jpg)
 
 Debug mode generates PowerShell commands to test all suggested thresholds:
 ```powershell