diff --git a/egui-wgpu/src/renderer.rs b/egui-wgpu/src/renderer.rs
index b805f978..2b202de7 100644
--- a/egui-wgpu/src/renderer.rs
+++ b/egui-wgpu/src/renderer.rs
@@ -104,6 +104,9 @@ impl ScreenDescriptor {
 #[repr(C)]
 struct UniformBuffer {
     screen_size_in_points: [f32; 2],
+    // Uniform buffers need to be at least 16 bytes in WebGL.
+    // See https://github.com/gfx-rs/wgpu/issues/2072
+    _padding: [u32; 2],
 }
 
 /// Wraps the buffers and includes additional information.
@@ -151,6 +154,7 @@ impl RenderPass {
             label: Some("egui_uniform_buffer"),
             contents: bytemuck::cast_slice(&[UniformBuffer {
                 screen_size_in_points: [0.0, 0.0],
+                _padding: Default::default(),
             }]),
             usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
         });
@@ -661,6 +665,7 @@ impl RenderPass {
             0,
             bytemuck::cast_slice(&[UniformBuffer {
                 screen_size_in_points,
+                _padding: Default::default(),
             }]),
         );