diff --git a/package-lock.json b/package-lock.json
index db337347f..ca5889523 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3823,7 +3823,7 @@
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+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
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-          "resolved": "http://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
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@@ -5040,14 +5039,12 @@
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+              "dev": true
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@@ -13196,7 +13146,7 @@
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-              "resolved": false,
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@@ -13205,7 +13155,7 @@
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-          "dev": true,
-          "optional": true
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@@ -13259,24 +13208,23 @@
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-          "resolved": false,
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-          "resolved": false,
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@@ -13285,7 +13233,7 @@
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@@ -13295,17 +13243,16 @@
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-          "resolved": false,
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@@ -13337,7 +13284,7 @@
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-          "resolved": false,
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@@ -13354,10 +13301,9 @@
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-          "resolved": false,
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           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-          "dev": true,
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@@ -15773,8 +15719,7 @@
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-              "dev": true,
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@@ -15795,14 +15740,12 @@
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+              "dev": true
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@@ -15817,20 +15760,17 @@
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-              "dev": true,
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+              "dev": true
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               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
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-              "dev": true,
-              "optional": true
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@@ -15947,8 +15887,7 @@
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-              "dev": true,
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+              "dev": true
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@@ -15960,7 +15899,6 @@
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@@ -15983,14 +15920,12 @@
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-              "dev": true,
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+              "dev": true
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@@ -16009,7 +15944,6 @@
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@@ -16090,8 +16024,7 @@
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@@ -16103,7 +16036,6 @@
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@@ -16189,8 +16121,7 @@
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@@ -16226,7 +16157,6 @@
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@@ -16246,7 +16176,6 @@
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@@ -16290,14 +16219,12 @@
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-              "dev": true,
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+              "dev": true
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-              "dev": true,
-              "optional": true
+              "dev": true
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@@ -23721,7 +23648,7 @@
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-      "resolved": "http://registry.npmjs.org/regexpp/-/regexpp-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-1.1.0.tgz",
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diff --git a/website/package-lock.json b/website/package-lock.json
index 654faf50e..82fbf29e8 100644
--- a/website/package-lock.json
+++ b/website/package-lock.json
@@ -782,6 +782,11 @@
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     },
+    "blob-to-buffer": {
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+      "resolved": "https://registry.npmjs.org/blob-to-buffer/-/blob-to-buffer-1.2.8.tgz",
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+    },
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@@ -2632,6 +2637,16 @@
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+    "drag-drop": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/drag-drop/-/drag-drop-4.2.0.tgz",
+      "integrity": "sha512-RA8jXrxOlOFzkM5+tapHeavt0PIlh4FReYx4Ct9ECBRMxixPKUehRs4OQSruAPhQScClt1JaZ3M882FQdcZWaw==",
+      "requires": {
+        "blob-to-buffer": "^1.0.2",
+        "flatten": "^1.0.2",
+        "run-parallel": "^1.0.0"
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       "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -3283,6 +3298,11 @@
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+      "resolved": "https://registry.npmjs.org/flatten/-/flatten-1.0.2.tgz",
+      "integrity": "sha1-2uRqnXj74lKSJYzB54CkHZXAN4I="
+    },
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@@ -3385,7 +3405,8 @@
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+          "bundled": true,
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@@ -3403,11 +3424,13 @@
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+          "bundled": true,
+          "optional": true
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@@ -3420,15 +3443,18 @@
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@@ -3531,7 +3557,8 @@
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@@ -3541,6 +3568,7 @@
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@@ -3553,17 +3581,20 @@
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           "bundled": true,
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         "minimist": {
           "version": "0.0.8",
-          "bundled": true
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@@ -3580,6 +3611,7 @@
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@@ -3652,7 +3684,8 @@
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@@ -3662,6 +3695,7 @@
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@@ -3737,7 +3771,8 @@
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@@ -3767,6 +3802,7 @@
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@@ -3784,6 +3820,7 @@
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@@ -3822,11 +3859,13 @@
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-          "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg="
+          "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=",
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+          "optional": true,
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@@ -5989,6 +6030,7 @@
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               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
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@@ -6147,6 +6189,7 @@
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+          "optional": true,
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               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+              "optional": true,
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@@ -6217,7 +6261,8 @@
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-          "integrity": "sha1-qIwCU1eR8C7TfHahueqXc8gz+MI="
+          "integrity": "sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=",
+          "optional": true
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@@ -6232,6 +6277,7 @@
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           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
+          "optional": true,
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@@ -6240,6 +6286,7 @@
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               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+              "optional": true,
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@@ -6249,12 +6296,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "optional": true
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+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "optional": true
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@@ -8316,6 +8365,11 @@
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+    "run-parallel": {
+      "version": "1.1.9",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.9.tgz",
+      "integrity": "sha512-DEqnSRTDw/Tc3FXf49zedI638Z9onwUotBMiUFKmrO2sdFKIbXamXGQ3Axd4qgphxKB4kw/qP1w5kTxnfU1B9Q=="
+    },
     "rx": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/rx/-/rx-4.1.0.tgz",
diff --git a/website/package.json b/website/package.json
index bba7ae615..63fd0fe73 100644
--- a/website/package.json
+++ b/website/package.json
@@ -9,6 +9,7 @@
     "@goto-bus-stop/hexo-renderer-postcss": "^2.0.0",
     "autoprefixer": "^9.5.1",
     "cssnano": "^4.1.10",
+    "drag-drop": "^4.2.0",
     "he": "^1.1.1",
     "hexo": "3.8.0",
     "hexo-browsersync": "^0.3.0",