diff --git a/ext/bg/js/options.js b/ext/bg/js/options.js
index c2da76b1..c4ccd450 100644
--- a/ext/bg/js/options.js
+++ b/ext/bg/js/options.js
@@ -319,6 +319,13 @@ function profileOptionsCreateDefaults() {
             enableOnSearchPage: true
         },
 
+        translation: {
+            convertKatakanaToHiragana: 'variant',
+            convertHalfWidthCharacters: 'false',
+            convertNumericCharacters: 'false',
+            convertAlphabeticCharacters: 'false'
+        },
+
         dictionaries: {},
 
         parsing: {
diff --git a/ext/bg/js/settings/main.js b/ext/bg/js/settings/main.js
index ac255978..2130dd5a 100644
--- a/ext/bg/js/settings/main.js
+++ b/ext/bg/js/settings/main.js
@@ -72,6 +72,11 @@ async function formRead(options) {
     options.scanning.modifier = $('#scan-modifier-key').val();
     options.scanning.popupNestingMaxDepth = parseInt($('#popup-nesting-max-depth').val(), 10);
 
+    options.translation.convertKatakanaToHiragana = $('#translation-convert-katakana-to-hiragana').val();
+    options.translation.convertHalfWidthCharacters = $('#translation-convert-half-width-characters').val();
+    options.translation.convertNumericCharacters = $('#translation-convert-numeric-characters').val();
+    options.translation.convertAlphabeticCharacters = $('#translation-convert-alphabetic-characters').val();
+
     options.parsing.enableScanningParser = $('#parsing-scan-enable').prop('checked');
     options.parsing.enableMecabParser = $('#parsing-mecab-enable').prop('checked');
     options.parsing.readingMode = $('#parsing-reading-mode').val();
@@ -140,6 +145,11 @@ async function formWrite(options) {
     $('#scan-modifier-key').val(options.scanning.modifier);
     $('#popup-nesting-max-depth').val(options.scanning.popupNestingMaxDepth);
 
+    $('#translation-convert-katakana-to-hiragana').val(options.translation.convertKatakanaToHiragana);
+    $('#translation-convert-half-width-characters').val(options.translation.convertHalfWidthCharacters);
+    $('#translation-convert-numeric-characters').val(options.translation.convertNumericCharacters);
+    $('#translation-convert-alphabetic-characters').val(options.translation.convertAlphabeticCharacters);
+
     $('#parsing-scan-enable').prop('checked', options.parsing.enableScanningParser);
     $('#parsing-mecab-enable').prop('checked', options.parsing.enableMecabParser);
     $('#parsing-reading-mode').val(options.parsing.readingMode);
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index a283335c..d5b53a80 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -397,6 +397,46 @@
                 </div>
             </div>
 
+            <div>
+                <h3>Translation Options</h3>
+
+                <div class="form-group">
+                    <label for="translation-convert-katakana-to-hiragana">Convert katakana to hiragana <span class="label-light">(ヨミチャン &rarr; よみちゃん)</span></label>
+                    <select class="form-control" id="translation-convert-katakana-to-hiragana">
+                        <option value="false">Disabled</option>
+                        <option value="true">Enabled</option>
+                        <option value="variant">Use both variants</option>
+                    </select>
+                </div>
+
+                <div class="form-group">
+                    <label for="translation-convert-half-width-characters">Convert half width characters to full width <span class="label-light">(ﾖﾐﾁｬﾝ &rarr; ヨミチャン)</span></label>
+                    <select class="form-control" id="translation-convert-half-width-characters">
+                        <option value="false">Disabled</option>
+                        <option value="true">Enabled</option>
+                        <option value="variant">Use both variants</option>
+                    </select>
+                </div>
+
+                <div class="form-group">
+                    <label for="translation-convert-numeric-characters">Convert numeric characters to full width <span class="label-light">(1234 &rarr; １２３４)</span></label>
+                    <select class="form-control" id="translation-convert-numeric-characters">
+                        <option value="false">Disabled</option>
+                        <option value="true">Enabled</option>
+                        <option value="variant">Use both variants</option>
+                    </select>
+                </div>
+
+                <div class="form-group">
+                    <label for="translation-convert-alphabetic-characters">Convert alphabetic characters to hiragana <span class="label-light">(yomichan &rarr; よみちゃん)</span></label>
+                    <select class="form-control" id="translation-convert-alphabetic-characters">
+                        <option value="false">Disabled</option>
+                        <option value="true">Enabled</option>
+                        <option value="variant">Use both variants</option>
+                    </select>
+                </div>
+            </div>
+
             <div id="popup-content-scanning">
                 <h3>Popup Content Scanning Options</h3>