diff --git a/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.h b/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.h
index 8845e993d..a83ade087 100644
--- a/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.h
+++ b/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.h
@@ -52,8 +52,8 @@ namespace Magnum { namespace Trade {
 @brief TGA image converter plugin
 
 Supports images with format @ref ColorFormat::RGB, @ref ColorFormat::RGBA or
-@ref ColorFormat::Red (or @ref ColorFormat::Luminance in OpenGL ES 2.0) and
-type @ref ColorType::UnsignedByte.
+@ref ColorFormat::Red (or @ref ColorFormat::Luminance in OpenGL ES 2.0 and
+WebGL 1.0) and type @ref ColorType::UnsignedByte.
 
 This plugin is built if `WITH_TGAIMAGECONVERTER` is enabled when building
 Magnum. To use dynamic plugin, you need to load `TgaImageConverter` plugin
diff --git a/src/MagnumPlugins/TgaImporter/TgaImporter.h b/src/MagnumPlugins/TgaImporter/TgaImporter.h
index 0680fb090..54c2fe401 100644
--- a/src/MagnumPlugins/TgaImporter/TgaImporter.h
+++ b/src/MagnumPlugins/TgaImporter/TgaImporter.h
@@ -65,8 +65,8 @@ package in CMake and link to `${MAGNUM_TGAIMPORTER_LIBRARIES}`. See
 The images are imported with @ref ColorType::UnsignedByte and @ref ColorFormat::RGB,
 @ref ColorFormat::RGBA or @ref ColorFormat::Red, respectively. Grayscale images
 require extension @extension{ARB,texture_rg}. In OpenGL ES 2.0, if
-@es_extension{EXT,texture_rg} is not supported, grayscale images use
-@ref ColorFormat::Luminance instead of @ref ColorFormat::Red.
+@es_extension{EXT,texture_rg} is not supported and in WebGL 1.0, grayscale
+images use @ref ColorFormat::Luminance instead of @ref ColorFormat::Red.
 */
 class MAGNUM_TGAIMPORTER_EXPORT TgaImporter: public AbstractImporter {
     public: