diff --git a/public/workload-simulator.html b/public/workload-simulator.html
index a4eea86c..bd73ddb1 100644
--- a/public/workload-simulator.html
+++ b/public/workload-simulator.html
@@ -1012,7 +1012,7 @@ <h2><center>Web graphics workload simulator</center></h2>
         gl.shaderSource(shader, source);
         gl.compileShader(shader);
         if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS))
-          console.log(gl.getShaderInfoLog(shader));
+          console.error(gl.getShaderInfoLog(shader));
         gl.attachShader(prog, shader);
       }
       compileShader(vsSource, gl.VERTEX_SHADER);
@@ -1021,7 +1021,7 @@ <h2><center>Web graphics workload simulator</center></h2>
         gl.bindAttribLocation(prog, i, attribs[i]);
       gl.linkProgram(prog);
       if (!gl.getProgramParameter(prog, gl.LINK_STATUS))
-        console.log(gl.getProgramInfoLog(prog));
+        console.error(gl.getProgramInfoLog(prog));
       for (const attrib of attribs)
         prog[attrib] = gl.getAttribLocation(prog, attrib);
       for (const uniform of uniforms)
diff --git a/src/sample/samplerParameters/main.ts b/src/sample/samplerParameters/main.ts
index 58600dba..ce05fc7c 100644
--- a/src/sample/samplerParameters/main.ts
+++ b/src/sample/samplerParameters/main.ts
@@ -164,7 +164,6 @@ const init: SampleInit = async ({ canvas, pageState, gui }) => {
   const kScaleFactor = Math.floor(kCanvasLayoutDevicePixels / kCanvasSize);
   const kCanvasDevicePixels = kScaleFactor * kCanvasSize;
   const kCanvasCSSSize = kCanvasDevicePixels / devicePixelRatio;
-  console.log(kCanvasDevicePixels, kCanvasCSSSize);
   canvas.style.imageRendering = 'pixelated';
   canvas.width = canvas.height = kCanvasSize;
   canvas.style.minWidth = canvas.style.maxWidth = kCanvasCSSSize + 'px';