diff --git a/src/components.js b/src/components.js
index 8d4f581..fd03dca 100644
--- a/src/components.js
+++ b/src/components.js
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 import { Controller } from './controller';
+import { domContentLoaded } from './helpers/domContentLoaded.js';
 
 /* Transforms */
 import { makeStyleTag }    from './styles/styles';
@@ -55,13 +56,13 @@ const distillMain = function() {
     throw new Error('Runlevel 1: Distill Template is getting loaded more than once, aborting!');
   } else {
     window.distillTemplateIsLoading = true;
-    console.info('Runlevel 1: Distill Template has started loading.');
+    console.debug('Runlevel 1: Distill Template has started loading.');
   }
 
   /* 2. Add styles if they weren't added during prerendering */
   makeStyleTag(document);
-  console.info('Runlevel 1: Static Distill styles have been added.');
-  console.info('Runlevel 1->2.');
+  console.debug('Runlevel 1: Static Distill styles have been added.');
+  console.debug('Runlevel 1->2.');
   window.distillRunlevel += 1;
 
   /* 3. Register Controller listener functions */
@@ -73,8 +74,8 @@ const distillMain = function() {
       console.error('Runlevel 2: Controller listeners need to be functions!');
     }
   }
-  console.info('Runlevel 2: We can now listen to controller events.');
-  console.info('Runlevel 2->3.');
+  console.debug('Runlevel 2: We can now listen to controller events.');
+  console.debug('Runlevel 2->3.');
   window.distillRunlevel += 1;
 
   /* 4. Register components */
@@ -93,29 +94,31 @@ const distillMain = function() {
   }
   const allComponents = components.concat(distillComponents);
   for (const component of allComponents) {
-    console.info('Runlevel 2: Registering custom element: ' + component.is);
+    console.debug('Runlevel 2: Registering custom element: ' + component.is);
     customElements.define(component.is, component);
   }
 
-  console.info('Runlevel 3: Distill Template finished registering custom elements.');
-  console.info('Runlevel 3->4.');
+  console.debug('Runlevel 3: Distill Template finished registering custom elements.');
+  console.debug('Runlevel 3->4.');
   window.distillRunlevel += 1;
 
   // If template was added after DOMContentLoaded we may have missed that event.
   // Controller will check for that case, so trigger the event explicitly:
-  Controller.listeners.DOMContentLoaded();
+  if (domContentLoaded()) {
+    Controller.listeners.DOMContentLoaded();
+  }
 
-  console.info('Runlevel 4: Distill Template initialisation complete.');
+  console.debug('Runlevel 4: Distill Template initialisation complete.');
 };
 
 window.distillRunlevel = 0;
 /* 0. Check browser feature support; synchronously polyfill if needed */
 if (Polyfills.browserSupportsAllFeatures()) {
-  console.info('Runlevel 0: No need for polyfills.');
-  console.info('Runlevel 0->1.');
+  console.debug('Runlevel 0: No need for polyfills.');
+  console.debug('Runlevel 0->1.');
   window.distillRunlevel += 1;
   distillMain();
 } else {
-  console.info('Runlevel 0: Distill Template is loading polyfills.');
+  console.debug('Runlevel 0: Distill Template is loading polyfills.');
   Polyfills.load(distillMain);
 }
diff --git a/src/controller.js b/src/controller.js
index c0cfcb1..ec41d17 100644
--- a/src/controller.js
+++ b/src/controller.js
@@ -15,14 +15,12 @@
 import { FrontMatter, mergeFromYMLFrontmatter } from './front-matter';
 import { DMath } from './components/d-math';
 import { collect_citations } from './helpers/citation.js';
+import { domContentLoaded } from './helpers/domContentLoaded.js';
 import { parseFrontmatter } from './components/d-front-matter';
 import optionalComponents from './transforms/optional-components';
 
 const frontMatter = new FrontMatter();
 
-function domContentLoaded() {
-  return ['interactive', 'complete'].indexOf(document.readyState) !== -1;
-}
 
 export const Controller = {
 
@@ -109,7 +107,7 @@ export const Controller = {
 
 
       if (citationListTag.hasAttribute('distill-prerendered')) {
-        console.info('Citation list was prerendered; not updating it.');
+        console.debug('Citation list was prerendered; not updating it.');
       } else {
         const entries = new Map(frontMatter.citations.map( citationKey => {
           return [citationKey, frontMatter.bibliography.get(citationKey)];
@@ -167,11 +165,11 @@ export const Controller = {
         console.warn('Controller received DOMContentLoaded but was already loaded!');
         return;
       } else if (!domContentLoaded()) {
-        console.warn('Controller received DOMContentLoaded before appropriate document.readyState!');
+        console.warn('Controller received DOMContentLoaded at document.readyState: ' + document.readyState + '!');
         return;
       } else {
         Controller.loaded = true;
-        console.log('Runlevel 4: Controller running DOMContentLoaded');
+        console.debug('Runlevel 4: Controller running DOMContentLoaded');
       }
 
       const frontMatterTag = document.querySelector('d-front-matter');
diff --git a/src/helpers/domContentLoaded.js b/src/helpers/domContentLoaded.js
new file mode 100644
index 0000000..b514d2e
--- /dev/null
+++ b/src/helpers/domContentLoaded.js
@@ -0,0 +1,3 @@
+export function domContentLoaded() {
+  return ['interactive', 'complete'].indexOf(document.readyState) !== -1;
+}
diff --git a/src/helpers/polyfills.js b/src/helpers/polyfills.js
index d8db300..133bf95 100644
--- a/src/helpers/polyfills.js
+++ b/src/helpers/polyfills.js
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 export function addPolyfill(polyfill, polyfillLoadedCallback) {
-  console.info('Runlevel 0: Polyfill required: ' + polyfill.name);
+  console.debug('Runlevel 0: Polyfill required: ' + polyfill.name);
   const script = document.createElement('script');
   script.src = polyfill.url;
   script.async = false;
@@ -58,11 +58,11 @@ export class Polyfills {
     // Define an intermediate callback that checks if all is loaded.
     const polyfillLoaded = function(polyfill) {
       polyfill.loaded = true;
-      console.info('Runlevel 0: Polyfill has finished loading: ' + polyfill.name);
-      // console.info(window[polyfill.name]);
+      console.debug('Runlevel 0: Polyfill has finished loading: ' + polyfill.name);
+      // console.debug(window[polyfill.name]);
       if (Polyfills.neededPolyfills.every((poly) => poly.loaded)) {
-        console.info('Runlevel 0: All required polyfills have finished loading.');
-        console.info('Runlevel 0->1.');
+        console.debug('Runlevel 0: All required polyfills have finished loading.');
+        console.debug('Runlevel 0->1.');
         window.distillRunlevel = 1;
         callback();
       }
diff --git a/src/transforms/polyfills.js b/src/transforms/polyfills.js
index f5b4696..9beb31e 100644
--- a/src/transforms/polyfills.js
+++ b/src/transforms/polyfills.js
@@ -67,7 +67,7 @@ export default function render(dom) {
   if (templateTag) {
     templateTag.parentNode.removeChild(templateTag);
   } else {
-    console.info('FYI: Did not find template tag when trying to remove it. You may not have added it. Be aware that our polyfills will add it.')
+    console.debug('FYI: Did not find template tag when trying to remove it. You may not have added it. Be aware that our polyfills will add it.')
   }
 
   // add loader