diff --git a/ext/bg/background.html b/ext/bg/background.html
index b5ae147b..4410c249 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -7,6 +7,7 @@
         <script src="/mixed/lib/handlebars.min.js"></script>
         <script src="/mixed/lib/dexie.min.js"></script>
         <script src="/mixed/lib/wanakana.min.js"></script>
+        <script src="/mixed/lib/jszip.min.js"></script>
         <script src="/mixed/js/util.js"></script>
         <script src="/bg/js/templates.js"></script>
         <script src="/bg/js/util.js"></script>
diff --git a/ext/bg/js/database.js b/ext/bg/js/database.js
index 51f639d9..70aeb0d7 100644
--- a/ext/bg/js/database.js
+++ b/ext/bg/js/database.js
@@ -155,7 +155,7 @@ class Database {
         return this.db.dictionaries.toArray();
     }
 
-    importDictionary(indexUrl, callback) {
+    importDictionary(archive, callback) {
         if (this.db === null) {
             return Promise.reject('database not initialized');
         }
@@ -204,7 +204,7 @@ class Database {
 
             return this.db.terms.bulkAdd(rows).then(() => {
                 if (callback) {
-                    callback(total, current, indexUrl);
+                    callback(total, current);
                 }
             });
         };
@@ -224,11 +224,11 @@ class Database {
 
             return this.db.kanji.bulkAdd(rows).then(() => {
                 if (callback) {
-                    callback(total, current, indexUrl);
+                    callback(total, current);
                 }
             });
         };
 
-        return jsonLoadDb(indexUrl, indexLoaded, termsLoaded, kanjiLoaded).then(() => summary);
+        return zipLoadDb(archive, indexLoaded, termsLoaded, kanjiLoaded).then(() => summary);
     }
 }
diff --git a/ext/bg/js/options.js b/ext/bg/js/options.js
index 0b8b7ac3..cde1fc3f 100644
--- a/ext/bg/js/options.js
+++ b/ext/bg/js/options.js
@@ -250,31 +250,27 @@ function onDictionaryPurge(e) {
     });
 }
 
-function onDictionaryImport() {
-    alert('import');
+function onDictionaryImport(e) {
+    dictionaryErrorShow(null);
+    dictionarySpinnerShow(true);
 
-    // dictionaryErrorShow(null);
-    // dictionarySpinnerShow(true);
+    const dictUrl = $('#dict-url');
+    const dictImporter = $('#dict-importer').hide();
+    const dictProgress = $('#dict-import-progress').show();
+    const setProgress = percent => dictProgress.find('.progress-bar').css('width', `${percent}%`);
 
-    // const dictUrl = $('#dict-url');
-    // const dictImporter = $('#dict-importer').hide();
-    // const dictProgress = $('#dict-import-progress').show();
-    // const setProgress = percent => dictProgress.find('.progress-bar').css('width', `${percent}%`);
+    setProgress(0.0);
 
-    // setProgress(0.0);
-
-    // optionsLoad().then(options => {
-    //     instDb().importDictionary(dictUrl.val(), (total, current) => setProgress(current / total * 100.0)).then(summary => {
-    //         options.dictionaries[summary.title] = {enabled: true, priority: 0};
-    //         return optionsSave(options);
-    //     }).then(() => dictionaryGroupsPopulate(options)).catch(dictionaryErrorShow).then(() => {
-    //         dictionarySpinnerShow(false);
-    //         dictProgress.hide();
-    //         dictImporter.show();
-    //         dictUrl.val('');
-    //         dictUrl.trigger('input');
-    //     });
-    // });
+    optionsLoad().then(options => {
+        return instDb().importDictionary(e.target.files[0], (total, current) => setProgress(current / total * 100.0)).then(summary => {
+            options.dictionaries[summary.title] = {enabled: true, priority: 0};
+            return optionsSave(options);
+        }).then(() => dictionaryGroupsPopulate(options));
+    }).catch(dictionaryErrorShow).then(() => {
+        dictionarySpinnerShow(false);
+        dictProgress.hide();
+        dictImporter.show();
+    });
 }
 
 /*
diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index 75833871..ea307b6b 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -451,14 +451,30 @@ function jsonLoadInt(url) {
     return jsonLoad(chrome.extension.getURL(url));
 }
 
-function jsonLoadDb(indexUrl, indexLoaded, termsLoaded, kanjiLoaded) {
-    const indexDir = indexUrl.slice(0, indexUrl.lastIndexOf('/'));
-    return jsonLoad(indexUrl).then(index => {
-        if (!index.title || !index.version || !index.revision) {
-            return Promise.reject('unrecognized dictionary format');
+/*
+ * Zip
+ */
+
+function zipLoadDb(archive, indexLoaded, termsLoaded, kanjiLoaded) {
+    return JSZip.loadAsync(archive).then(files => {
+        const fileMap = {};
+        files.forEach((path, file) => {
+            fileMap[path] = file;
+        });
+
+        return fileMap;
+    }).then(files => {
+        const indexFile = files['index.json'];
+        if (!indexFile) {
+            return Promise.reject('no dictionary index found in archive');
         }
 
-        if (indexLoaded !== null) {
+        return indexFile.async('string').then(indexJson => {
+            const index = JSON.parse(indexJson);
+            if (!index.title || !index.version || !index.revision) {
+                return Promise.reject('unrecognized dictionary format');
+            }
+
             return indexLoaded(
                 index.title,
                 index.version,
@@ -467,44 +483,45 @@ function jsonLoadDb(indexUrl, indexLoaded, termsLoaded, kanjiLoaded) {
                 index.termBanks > 0,
                 index.kanjiBanks > 0
             ).then(() => index);
-        }
+        }).then(index => {
+            const loaders = [];
+            const banksTotal = index.termBanks + index.kanjiBanks;
+            let banksLoaded = 0;
 
-        return index;
-    }).then(index => {
-        const loaders = [];
-        const banksTotal = index.termBanks + index.kanjiBanks;
-        let banksLoaded = 0;
+            for (let i = 1; i <= index.termBanks; ++i) {
+                const bankFile = files[`term_bank_${i}.json`];
+                if (!bankFile) {
+                    return Promise.reject('missing term bank file');
+                }
 
-        for (let i = 1; i <= index.termBanks; ++i) {
-            const bankUrl = `${indexDir}/term_bank_${i}.json`;
-            loaders.push(() => jsonLoad(bankUrl).then(entries => termsLoaded(
-                index.title,
-                entries,
-                banksTotal,
-                banksLoaded++
-            )));
-        }
+                loaders.push(() => bankFile.async('string').then(bankJson => {
+                    const bank = JSON.parse(bankJson);
+                    return termsLoaded(index.title, bank, banksTotal, banksLoaded++);
+                }));
+            }
 
-        for (let i = 1; i <= index.kanjiBanks; ++i) {
-            const bankUrl = `${indexDir}/kanji_bank_${i}.json`;
-            loaders.push(() => jsonLoad(bankUrl).then(entries => kanjiLoaded(
-                index.title,
-                entries,
-                banksTotal,
-                banksLoaded++
-            )));
-        }
+            for (let i = 1; i <= index.kanjiBanks; ++i) {
+                const bankFile = files[`kanji_bank_${i}.json`];
+                if (!bankFile) {
+                    return Promise.reject('missing kanji bank file');
+                }
 
-        let chain = Promise.resolve();
-        for (const loader of loaders) {
-            chain = chain.then(loader);
-        }
+                loaders.push(() => bankFile.async('string').then(bankJson => {
+                    const bank = JSON.parse(bankJson);
+                    return kanjiLoaded(index.title, bank, banksTotal, banksLoaded++);
+                }));
+            }
 
-        return chain;
+            let chain = Promise.resolve();
+            for (const loader of loaders) {
+                chain = chain.then(loader);
+            }
+
+            return chain;
+        });
     });
 }
 
-
 /*
  * Helpers
  */