diff --git a/sets/boost/creative-toolbox/auto-builder/README.md b/sets/boost/creative-toolbox/auto-builder/index.md
similarity index 96%
rename from sets/boost/creative-toolbox/auto-builder/README.md
rename to sets/boost/creative-toolbox/auto-builder/index.md
index 99c6eaf..47d3f9a 100644
--- a/sets/boost/creative-toolbox/auto-builder/README.md
+++ b/sets/boost/creative-toolbox/auto-builder/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/creative-toolbox/auto-builder/
 title: "LEGO Boost Auto Builder"
 maintainer:
     user: "pybricks"
diff --git a/sets/boost/creative-toolbox/README.md b/sets/boost/creative-toolbox/index.md
similarity index 74%
rename from sets/boost/creative-toolbox/README.md
rename to sets/boost/creative-toolbox/index.md
index acee013..f05321d 100644
--- a/sets/boost/creative-toolbox/README.md
+++ b/sets/boost/creative-toolbox/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/creative-toolbox/
 title: "17101: Creative Toolbox"
 image:
     local: "creative-toolbox.jpg"
diff --git a/sets/boost/droid-commander/README.md b/sets/boost/droid-commander/index.md
similarity index 77%
rename from sets/boost/droid-commander/README.md
rename to sets/boost/droid-commander/index.md
index 35c9323..a1b8667 100644
--- a/sets/boost/droid-commander/README.md
+++ b/sets/boost/droid-commander/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/droid-commander/
 title: "75253: Star Wars™ BOOST Droid Commander"
 image:
     local: "droid-commander.jpg"
diff --git a/sets/boost/droid-commander/r2-d2/README.md b/sets/boost/droid-commander/r2-d2/index.md
similarity index 95%
rename from sets/boost/droid-commander/r2-d2/README.md
rename to sets/boost/droid-commander/r2-d2/index.md
index 6d8b531..84d0367 100644
--- a/sets/boost/droid-commander/r2-d2/README.md
+++ b/sets/boost/droid-commander/r2-d2/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/droid-commander/r2-d2/
 title: "LEGO® Star Wars™ BOOST Droid Commander R2-D2"
 maintainer:
     user: "pybricks"
diff --git a/sets/boost/README.md b/sets/boost/index.md
similarity index 69%
rename from sets/boost/README.md
rename to sets/boost/index.md
index 0541be6..3df78bf 100644
--- a/sets/boost/README.md
+++ b/sets/boost/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/
 title: "LEGO BOOST"
 layout: theme
 description: "Theme description"
diff --git a/sets/city/60198-cargo-train/README.md b/sets/city/60198-cargo-train/index.md
similarity index 77%
rename from sets/city/60198-cargo-train/README.md
rename to sets/city/60198-cargo-train/index.md
index 9323754..6e9271a 100644
--- a/sets/city/60198-cargo-train/README.md
+++ b/sets/city/60198-cargo-train/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/60198-cargo-train/
 title: "Cargo train"
 image:
     local: "60198-cargo-train.jpg"
diff --git a/sets/city/60198-cargo-train/slope-detection/README.md b/sets/city/60198-cargo-train/slope-detection/index.md
similarity index 94%
rename from sets/city/60198-cargo-train/slope-detection/README.md
rename to sets/city/60198-cargo-train/slope-detection/index.md
index 67271fc..17df04f 100644
--- a/sets/city/60198-cargo-train/slope-detection/README.md
+++ b/sets/city/60198-cargo-train/slope-detection/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/60198-cargo-train/slope-detection/
 title: "Train slope detection"
 maintainer:
     user: "pybricks"
diff --git a/sets/city/README.md b/sets/city/index.md
similarity index 69%
rename from sets/city/README.md
rename to sets/city/index.md
index b8f10e6..cbc16e3 100644
--- a/sets/city/README.md
+++ b/sets/city/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/
 title: "LEGO City"
 layout: theme
 description: "Theme description"
diff --git a/sets/mindstorms/README.md b/sets/mindstorms/index.md
similarity index 67%
rename from sets/mindstorms/README.md
rename to sets/mindstorms/index.md
index 40a42fa..0f7e7bb 100644
--- a/sets/mindstorms/README.md
+++ b/sets/mindstorms/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/
 title: "LEGO MINDSTORMS"
 layout: theme
 description: "Theme description"
diff --git a/sets/mindstorms/robot-inventor/README.md b/sets/mindstorms/robot-inventor/index.md
similarity index 73%
rename from sets/mindstorms/robot-inventor/README.md
rename to sets/mindstorms/robot-inventor/index.md
index 86c7aa2..2475c2f 100644
--- a/sets/mindstorms/robot-inventor/README.md
+++ b/sets/mindstorms/robot-inventor/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/robot-inventor/
 title: "51515: Robot Inventor"
 image:
     local: "robot-inventor.jpg"
diff --git a/sets/mindstorms/robot-inventor/steerbot/README.md b/sets/mindstorms/robot-inventor/steerbot/index.md
similarity index 97%
rename from sets/mindstorms/robot-inventor/steerbot/README.md
rename to sets/mindstorms/robot-inventor/steerbot/index.md
index 8dd027f..362b8ce 100644
--- a/sets/mindstorms/robot-inventor/steerbot/README.md
+++ b/sets/mindstorms/robot-inventor/steerbot/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/robot-inventor/steerbot/
 title: "Steer Bot"
 maintainer:
     user: "GusJansson"
diff --git a/sets/spike/prime/README.md b/sets/spike/prime/index.md
similarity index 72%
rename from sets/spike/prime/README.md
rename to sets/spike/prime/index.md
index 6db70f2..3abb183 100644
--- a/sets/spike/prime/README.md
+++ b/sets/spike/prime/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/spike/
 title: "LEGO Education SPIKE"
 layout: theme
 description: "Theme description"
diff --git a/sets/technic/42099-off-roader/driving/README.md b/sets/technic/42099-off-roader/driving/index.md
similarity index 91%
rename from sets/technic/42099-off-roader/driving/README.md
rename to sets/technic/42099-off-roader/driving/index.md
index 52fbc2e..fb8c466 100644
--- a/sets/technic/42099-off-roader/driving/README.md
+++ b/sets/technic/42099-off-roader/driving/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/driving/
 title: "42099: Technic Off-Roader: Driving"
 maintainer:
     user: "pybricks"
diff --git a/sets/technic/42099-off-roader/README.md b/sets/technic/42099-off-roader/index.md
similarity index 74%
rename from sets/technic/42099-off-roader/README.md
rename to sets/technic/42099-off-roader/index.md
index 74ddafb..571818f 100644
--- a/sets/technic/42099-off-roader/README.md
+++ b/sets/technic/42099-off-roader/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/
 title: "42099: 4X4 X-treme Off-Roader"
 image:
     local: "42099-off-roader.jpg"
diff --git a/sets/technic/42099-off-roader/keyboard-remote/README.md b/sets/technic/42099-off-roader/keyboard-remote/index.md
similarity index 88%
rename from sets/technic/42099-off-roader/keyboard-remote/README.md
rename to sets/technic/42099-off-roader/keyboard-remote/index.md
index f78828d..3d69027 100644
--- a/sets/technic/42099-off-roader/keyboard-remote/README.md
+++ b/sets/technic/42099-off-roader/keyboard-remote/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/keyboard-remote/
 title: "42099: Technic Off-Roader: Keyboard Remote"
 maintainer:
     user: "pybricks"
@@ -18,7 +17,7 @@ Your MicroPython programs can produce *output* using the `print` command, but
 it can also read *input*. To enter input, just click on the terminal window
 and press some keys.
 
-![](/_pages/projects/sets/technic/42099-off-roader/keyboard-remote/terminalwindow.png)
+![](./terminalwindow.png)
 
 You can read keyboard presses using `stdin`, as shown in the example below.
 Then you can make your program choose different behaviors based on which key
diff --git a/sets/technic/42099-off-roader/obstacle-avoidance/README.md b/sets/technic/42099-off-roader/obstacle-avoidance/index.md
similarity index 93%
rename from sets/technic/42099-off-roader/obstacle-avoidance/README.md
rename to sets/technic/42099-off-roader/obstacle-avoidance/index.md
index b1ffdf0..3472924 100644
--- a/sets/technic/42099-off-roader/obstacle-avoidance/README.md
+++ b/sets/technic/42099-off-roader/obstacle-avoidance/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/obstacle-avoidance/
 title: "42099: Technic Off-Roader: Obstacle Avoidance"
 maintainer:
     user: "pybricks"
diff --git a/sets/technic/README.md b/sets/technic/index.md
similarity index 68%
rename from sets/technic/README.md
rename to sets/technic/index.md
index 24358c3..81787f8 100644
--- a/sets/technic/README.md
+++ b/sets/technic/index.md
@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/
 title: "LEGO Technic"
 layout: theme
 description: "Theme description"