diff --git a/docs/features.rst b/docs/features.rst
deleted file mode 100644
index 9de882a2..00000000
--- a/docs/features.rst
+++ /dev/null
@@ -1,100 +0,0 @@
-Features
-========
-
-What can you do with CamTools?
-------------------------------
-
-1. Plot cameras
-^^^^^^^^^^^^^^^
-
-Useful for debugging 3D reconstruction and NeRFs!
-
-.. code-block:: python
-
- import camtools as ct
- import open3d as o3d
- cameras = ct.camera.create_camera_frustums(Ks, Ts)
- o3d.visualization.draw_geometries([cameras])
-
-.. raw:: html
-
-
- 
-
-
-2. Convert camera parameters
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. code-block:: python
-
- pose = ct.convert.T_to_pose(T) # Convert T to pose
- T = ct.convert.pose_to_T(pose) # Convert pose to T
- R, t = ct.convert.T_to_R_t(T) # Convert T to R and t
- C = ct.convert.pose_to_C(pose) # Convert pose to camera center
- K, T = ct.convert.P_to_K_T(P) # Decompose projection matrix P to K and T
- # And more...
-
-3. Projection and ray casting
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. code-block:: python
-
- # Project 3D points to pixels.
- pixels = ct.project.points_to_pixel(points, K, T)
-
- # Back-project depth image to 3D points.
- points = ct.project.im_depth_to_points(im_depth, K, T)
-
- # Ray cast a triangle mesh to depth image given the camera parameters.
- im_depth = ct.raycast.mesh_to_im_depth(mesh, K, T, height, width)
-
- # And more...
-
-4. Image and depth I/O
-^^^^^^^^^^^^^^^^^^^^^^
-
-Strict type checks and range checks are enforced. The image and depth I/O
-APIs are specifically designed to solve the following pain points:
-
-- Is my image of type ``float32`` or ``uint8``?
-- Does it have range ``[0, 1]`` or ``[0, 255]``?
-- Is it RGB or BGR?
-- Does my image have an alpha channel?
-- When saving depth image as integer-based ``.png``, is it correctly scaled?
-
-.. code-block:: python
-
- ct.io.imread()
- ct.io.imwrite()
- ct.io.imread_detph()
- ct.io.imwrite_depth()
-
-5. Command-line tools
-^^^^^^^^^^^^^^^^^^^^^
-
-The ``ct`` command runs in terminal:
-
-.. code-block:: bash
-
- # Crop image boarders.
- ct crop-boarders *.png --pad_pixel 10 --skip_cropped --same_crop
-
- # Draw synchronized bounding boxes interactively.
- ct draw-bboxes path/to/a.png path/to/b.png
-
- # For more command-line tools.
- ct --help
-
-.. raw:: html
-
-
- 
-
-
-6. And more
-^^^^^^^^^^^
-
-- Solve line intersections
-- COLMAP tools
-- Points normalization
-- And more...
diff --git a/docs/index.rst b/docs/index.rst
index 1df2c5c6..57eda9fe 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -29,8 +29,106 @@ clear and easy-to-use APIs.
:caption: Docs
Home
- features
coordinates
installation
contributing
api
+
+
+What can you do with CamTools?
+------------------------------
+
+1. Plot cameras
+^^^^^^^^^^^^^^^
+
+Useful for debugging 3D reconstruction and NeRFs!
+
+.. code-block:: python
+
+ import camtools as ct
+ import open3d as o3d
+ cameras = ct.camera.create_camera_frustums(Ks, Ts)
+ o3d.visualization.draw_geometries([cameras])
+
+.. raw:: html
+
+
+
+
+
+2. Convert camera parameters
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: python
+
+ pose = ct.convert.T_to_pose(T) # Convert T to pose
+ T = ct.convert.pose_to_T(pose) # Convert pose to T
+ R, t = ct.convert.T_to_R_t(T) # Convert T to R and t
+ C = ct.convert.pose_to_C(pose) # Convert pose to camera center
+ K, T = ct.convert.P_to_K_T(P) # Decompose projection matrix P to K and T
+ # And more...
+
+3. Projection and ray casting
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: python
+
+ # Project 3D points to pixels.
+ pixels = ct.project.points_to_pixel(points, K, T)
+
+ # Back-project depth image to 3D points.
+ points = ct.project.im_depth_to_points(im_depth, K, T)
+
+ # Ray cast a triangle mesh to depth image given the camera parameters.
+ im_depth = ct.raycast.mesh_to_im_depth(mesh, K, T, height, width)
+
+ # And more...
+
+4. Image and depth I/O
+^^^^^^^^^^^^^^^^^^^^^^
+
+Strict type checks and range checks are enforced. The image and depth I/O
+APIs are specifically designed to solve the following pain points:
+
+- Is my image of type ``float32`` or ``uint8``?
+- Does it have range ``[0, 1]`` or ``[0, 255]``?
+- Is it RGB or BGR?
+- Does my image have an alpha channel?
+- When saving depth image as integer-based ``.png``, is it correctly scaled?
+
+.. code-block:: python
+
+ ct.io.imread()
+ ct.io.imwrite()
+ ct.io.imread_detph()
+ ct.io.imwrite_depth()
+
+5. Command-line tools
+^^^^^^^^^^^^^^^^^^^^^
+
+The ``ct`` command runs in terminal:
+
+.. code-block:: bash
+
+ # Crop image boarders.
+ ct crop-boarders *.png --pad_pixel 10 --skip_cropped --same_crop
+
+ # Draw synchronized bounding boxes interactively.
+ ct draw-bboxes path/to/a.png path/to/b.png
+
+ # For more command-line tools.
+ ct --help
+
+.. raw:: html
+
+
+
+
+
+6. And more
+^^^^^^^^^^^
+
+- Solve line intersections
+- COLMAP tools
+- Points normalization
+- And more...