diff --git a/inputfiles/idl/WebGL WEBGL_compressed_texture_etc1.widl b/inputfiles/idl/WebGL WEBGL_compressed_texture_etc1.widl
new file mode 100644
index 000000000..c72f75ffb
--- /dev/null
+++ b/inputfiles/idl/WebGL WEBGL_compressed_texture_etc1.widl	
@@ -0,0 +1,5 @@
+[NoInterfaceObject]
+interface WEBGL_compressed_texture_etc1 {
+    /* Compressed Texture Format */
+    const GLenum COMPRESSED_RGB_ETC1_WEBGL = 0x8D64;
+};
\ No newline at end of file
diff --git a/inputfiles/idl/WebGL WEBGL_compressed_texture_pvrtc.widl b/inputfiles/idl/WebGL WEBGL_compressed_texture_pvrtc.widl
new file mode 100644
index 000000000..7d064e504
--- /dev/null
+++ b/inputfiles/idl/WebGL WEBGL_compressed_texture_pvrtc.widl	
@@ -0,0 +1,8 @@
+[NoInterfaceObject]
+interface WEBGL_compressed_texture_pvrtc {
+    /* Compressed Texture Formats */
+    const GLenum COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00;
+    const GLenum COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02;
+    const GLenum COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01;
+    const GLenum COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03;
+};
\ No newline at end of file
diff --git a/inputfiles/idlSources.json b/inputfiles/idlSources.json
index a8e0bd4b2..546a4c81b 100644
--- a/inputfiles/idlSources.json
+++ b/inputfiles/idlSources.json
@@ -615,6 +615,14 @@
         "url": "https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc_srgb/",
         "title": "WebGL WEBGL_compressed_texture_s3tc_srgb"
     },
+    {
+        "url": "https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_pvrtc/",
+        "title": "WebGL WEBGL_compressed_texture_pvrtc"
+    },
+    {
+        "url": "https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_etc1/",
+        "title": "WebGL WEBGL_compressed_texture_etc1"
+    },
     {
         "url": "https://www.khronos.org/registry/webgl/extensions/WEBGL_debug_renderer_info/",
         "title": "WebGL WEBGL_debug_renderer_info"