diff --git a/website/src/lib/docs/en/files-and-stats.mdx b/website/src/lib/docs/en/files-and-stats.mdx
index 3d8bf743..b25755f7 100644
--- a/website/src/lib/docs/en/files-and-stats.mdx
+++ b/website/src/lib/docs/en/files-and-stats.mdx
@@ -51,7 +51,8 @@ Click on the profile to reset the selection.
### Additional data
Using the buttons on the right of the elevation profile, you can optionally color the elevation profile by:
-- **Slope** information computed from the elevation data
-- **Surface** data coming from OpenStreetMap's surface tags. This is only available for files created with **gpx.studio**.
+- **slope** information computed from the elevation data, or
+- **surface** data coming from OpenStreetMap's surface tags.
+This is only available for files created with **gpx.studio**.
-If your selection includes it, you can also visualize: **Speed** , **Heart rate** , **Cadence** , **Temperature** and **Power** data on the elevation profile.
+If your selection includes it, you can also visualize: **speed** , **heart rate** , **cadence** , **temperature** and **power** data on the elevation profile.
diff --git a/website/src/lib/docs/en/gpx.mdx b/website/src/lib/docs/en/gpx.mdx
index 1e8bc1f3..9c2067fa 100644
--- a/website/src/lib/docs/en/gpx.mdx
+++ b/website/src/lib/docs/en/gpx.mdx
@@ -1,5 +1,34 @@
---
-title: The GPX file format
+title: GPX file format
---
-# { title }
\ No newline at end of file
+
+
+# { title }
+
+The GPX file format is an open standard for exchanging GPS data between applications and GPS devices.
+It essentially consists of a series of GPS points encoding one or multiple GPS traces, and optionally some points of interest.
+
+GPX files may also contain metadata, of which the **name** and **description** fields are the most useful for users.
+
+### Tracks, segments and GPS points
+
+As mentioned above, a GPX file can contain multiple GPS traces.
+These are organized in a hierarchical structure, with tracks at the top level.
+
+- A **track** is made of a sequence of disconnected segments.
+Furthermore, it can contain metadata such as a **name**, a **description**, and **appearance properties**.
+- A **segment** is a sequence of GPS points that form a continuous path.
+- A **GPS point** is a location with a latitude, a longitude, and optionally a timestamp and an altitude.
+Some devices also store additional information such as the heart rate, the cadence, the temperature and the power.
+
+In most cases, GPX files contain a single track with a single segment.
+However, the hierarchy described above allows for more advanced use cases, such as planning multi-day trips with several variants for each day.
+
+### Points of interest
+
+**Points of interest** (technically called *waypoints*) represent locations of interest to show either on a GPS device or on a digital map.
+
+In addition to its coordinates, a point of interest can have a **name** and a **description**.