diff --git a/ext/js/data/anki-note-builder.js b/ext/js/data/anki-note-builder.js
index f12846b1..dfd92493 100644
--- a/ext/js/data/anki-note-builder.js
+++ b/ext/js/data/anki-note-builder.js
@@ -51,15 +51,7 @@ class AnkiNoteBuilder {
             duplicateScopeCheckChildren = true;
         }
 
-        const data = {
-            definition,
-            mode,
-            context,
-            resultOutputMode,
-            glossaryLayoutMode,
-            compactTags,
-            injectedMedia
-        };
+        const data = this._createData(definition, mode, context, resultOutputMode, glossaryLayoutMode, compactTags, injectedMedia);
         const formattedFieldValuePromises = [];
         for (const [, fieldValue] of fields) {
             const formattedFieldValuePromise = this._formatField(fieldValue, data, templates, errors);
@@ -90,8 +82,34 @@ class AnkiNoteBuilder {
         };
     }
 
+    async getRenderingData({
+        definition,
+        mode,
+        context,
+        resultOutputMode='split',
+        glossaryLayoutMode='default',
+        compactTags=false,
+        injectedMedia=null,
+        marker=null
+    }) {
+        const data = this._createData(definition, mode, context, resultOutputMode, glossaryLayoutMode, compactTags, injectedMedia);
+        return await this._templateRenderer.getModifiedData({data, marker}, 'ankiNote');
+    }
+
     // Private
 
+    _createData(definition, mode, context, resultOutputMode, glossaryLayoutMode, compactTags, injectedMedia) {
+        return {
+            definition,
+            mode,
+            context,
+            resultOutputMode,
+            glossaryLayoutMode,
+            compactTags,
+            injectedMedia
+        };
+    }
+
     async _formatField(field, data, templates, errors=null) {
         return await this._stringReplaceAsync(field, this._markerPattern, async (g0, marker) => {
             try {
diff --git a/ext/js/display/display.js b/ext/js/display/display.js
index 7ded1e09..3f56e081 100644
--- a/ext/js/display/display.js
+++ b/ext/js/display/display.js
@@ -757,9 +757,7 @@ class Display extends EventDispatcher {
     _onDebugLogClick(e) {
         const link = e.currentTarget;
         const index = this._getClosestDefinitionIndex(link);
-        if (index < 0 || index >= this._definitions.length) { return; }
-        const definition = this._definitions[index];
-        console.log(definition);
+        this._logDefinitionData(index);
     }
 
     _onDocumentElementMouseUp(e) {
@@ -1375,6 +1373,7 @@ class Display extends EventDispatcher {
     }
 
     _replaceHistoryStateNoNavigate(state, content) {
+        console.trace('_replaceHistoryStateNoNavigate', state);
         const historyChangeIgnorePre = this._historyChangeIgnore;
         try {
             this._historyChangeIgnore = true;
@@ -1866,4 +1865,32 @@ class Display extends EventDispatcher {
         const queryPostProcessor = this._queryPostProcessor;
         return typeof queryPostProcessor === 'function' ? queryPostProcessor(query) : query;
     }
+
+    async _logDefinitionData(index) {
+        if (index < 0 || index >= this._definitions.length) { return; }
+        const definition = this._definitions[index];
+        let ankiNoteData;
+        let ankiNoteDataException;
+        try {
+            const context = this._getNoteContext();
+            const {general: {resultOutputMode, glossaryLayoutMode, compactTags}} = this._options;
+            ankiNoteData = await this._ankiNoteBuilder.getRenderingData({
+                definition,
+                mode: 'test',
+                context,
+                resultOutputMode,
+                glossaryLayoutMode,
+                compactTags,
+                injectedMedia: null,
+                marker: 'test'
+            });
+        } catch (e) {
+            ankiNoteDataException = e;
+        }
+        const result = {definition, ankiNoteData};
+        if (typeof ankiNoteDataException !== 'undefined') {
+            result.ankiNoteDataException = ankiNoteDataException;
+        }
+        console.log(result);
+    }
 }
diff --git a/ext/js/templates/template-renderer-frame-api.js b/ext/js/templates/template-renderer-frame-api.js
index 4936a2af..6eebc199 100644
--- a/ext/js/templates/template-renderer-frame-api.js
+++ b/ext/js/templates/template-renderer-frame-api.js
@@ -19,7 +19,8 @@ class TemplateRendererFrameApi {
     constructor(templateRenderer) {
         this._templateRenderer = templateRenderer;
         this._windowMessageHandlers = new Map([
-            ['render', {async: true, handler: this._onRender.bind(this)}]
+            ['render', {async: true, handler: this._onRender.bind(this)}],
+            ['getModifiedData', {async: true, handler: this._onGetModifiedData.bind(this)}]
         ]);
     }
 
@@ -57,6 +58,11 @@ class TemplateRendererFrameApi {
         return await this._templateRenderer.render(template, data, type);
     }
 
+    async _onGetModifiedData({data, type}) {
+        const result = await this._templateRenderer.getModifiedData(data, type);
+        return this._clone(result);
+    }
+
     _errorToJson(error) {
         try {
             if (error !== null && typeof error === 'object') {
@@ -75,4 +81,8 @@ class TemplateRendererFrameApi {
             hasValue: true
         };
     }
+
+    _clone(value) {
+        return JSON.parse(JSON.stringify(value));
+    }
 }
diff --git a/ext/js/templates/template-renderer-proxy.js b/ext/js/templates/template-renderer-proxy.js
index 6a49832b..aba45e6c 100644
--- a/ext/js/templates/template-renderer-proxy.js
+++ b/ext/js/templates/template-renderer-proxy.js
@@ -30,6 +30,11 @@ class TemplateRendererProxy {
         return await this._invoke('render', {template, data, type});
     }
 
+    async getModifiedData(data, type) {
+        await this._prepareFrame();
+        return await this._invoke('getModifiedData', {data, type});
+    }
+
     // Private
 
     async _prepareFrame() {
diff --git a/ext/js/templates/template-renderer.js b/ext/js/templates/template-renderer.js
index f72740d5..a7a4a842 100644
--- a/ext/js/templates/template-renderer.js
+++ b/ext/js/templates/template-renderer.js
@@ -29,8 +29,8 @@ class TemplateRenderer {
         this._dataTypes = new Map();
     }
 
-    registerDataType(name, {modifier=null, modifierPost=null}) {
-        this._dataTypes.set(name, {modifier, modifierPost});
+    registerDataType(name, {modifier=null}) {
+        this._dataTypes.set(name, {modifier});
     }
 
     async render(template, data, type) {
@@ -47,33 +47,39 @@ class TemplateRenderer {
             cache.set(template, instance);
         }
 
-        let modifier = null;
-        let modifierPost = null;
-        if (typeof type === 'string') {
-            const typeInfo = this._dataTypes.get(type);
-            if (typeof typeInfo !== 'undefined') {
-                ({modifier, modifierPost} = typeInfo);
-            }
-        }
-
         try {
-            if (typeof modifier === 'function') {
-                data = modifier(data);
-            }
-
+            data = this._getModifiedData(data, type);
             this._stateStack = [new Map()];
             return instance(data).trim();
         } finally {
             this._stateStack = null;
-
-            if (typeof modifierPost === 'function') {
-                modifierPost(data);
-            }
         }
     }
 
+    async getModifiedData(data, type) {
+        return this._getModifiedData(data, type);
+    }
+
     // Private
 
+    _getModifier(type) {
+        if (typeof type === 'string') {
+            const typeInfo = this._dataTypes.get(type);
+            if (typeof typeInfo !== 'undefined') {
+                return typeInfo.modifier;
+            }
+        }
+        return null;
+    }
+
+    _getModifiedData(data, type) {
+        const modifier = this._getModifier(type);
+        if (typeof modifier === 'function') {
+            data = modifier(data);
+        }
+        return data;
+    }
+
     _updateCacheSize(maxSize) {
         const cache = this._cache;
         let removeCount = cache.size - maxSize;