diff --git a/package.json b/package.json
index be027e1..ff6ecdc 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "vim-vixen",
   "description": "Vim vixen",
   "scripts": {
+    "schema": "ajv compile -s src/shared/settings/schema.json -o src/shared/settings/validate.js",
     "start": "webpack --mode development -w --debug --devtool inline-source-map",
     "build": "NODE_ENV=production webpack --mode production --progress --display-error-details --devtool inline-source-map",
     "package": "npm run build && script/package",
diff --git a/src/shared/settings/schema.json b/src/shared/settings/schema.json
new file mode 100644
index 0000000..86add81
--- /dev/null
+++ b/src/shared/settings/schema.json
@@ -0,0 +1,82 @@
+{
+  "type": "object",
+  "properties": {
+    "keymaps": {
+      "type": "object",
+      "patternProperties": {
+        ".*": {
+          "type": "object",
+          "properties": {
+            "type": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "type"
+          ]
+        }
+      }
+    },
+    "search": {
+      "type": "object",
+      "properties": {
+        "default": {
+          "type": "string"
+        },
+        "engines": {
+          "type": "object",
+          "patternProperties": {
+            ".*": {
+              "type": "string"
+            }
+          }
+        }
+      },
+      "required": [
+        "default"
+      ]
+    },
+    "properties": {
+      "type": "object",
+      "properties": {
+        "hintchars": {
+          "type": "string"
+        },
+        "smoothscroll": {
+          "type": "boolean"
+        },
+        "complete": {
+          "type": "string"
+        }
+      }
+    },
+    "blacklist": {
+      "type": "array",
+      "items": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "object",
+            "properties": {
+              "url": {
+                "type": "string"
+              },
+              "keys": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                }
+              }
+            },
+            "required": [
+              "url",
+              "keys"
+            ]
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/src/shared/settings/validate.js b/src/shared/settings/validate.js
new file mode 100644
index 0000000..9de41d7
--- /dev/null
+++ b/src/shared/settings/validate.js
@@ -0,0 +1,537 @@
+'use strict';
+var validate = (function() {
+  var pattern0 = new RegExp('.*');
+  var refVal = [];
+  return function validate(data, dataPath, parentData, parentDataProperty, rootData) {
+    'use strict';
+    var vErrors = null;
+    var errors = 0;
+    if ((data && typeof data === "object" && !Array.isArray(data))) {
+      var errs__0 = errors;
+      var valid1 = true;
+      var data1 = data.keymaps;
+      if (data1 === undefined) {
+        valid1 = true;
+      } else {
+        var errs_1 = errors;
+        if ((data1 && typeof data1 === "object" && !Array.isArray(data1))) {
+          var errs__1 = errors;
+          var valid2 = true;
+          for (var key1 in data1) {
+            if (pattern0.test(key1)) {
+              var data2 = data1[key1];
+              var errs_2 = errors;
+              if ((data2 && typeof data2 === "object" && !Array.isArray(data2))) {
+                if (true) {
+                  var errs__2 = errors;
+                  var valid3 = true;
+                  if (data2.type === undefined) {
+                    valid3 = false;
+                    validate.errors = [{
+                      keyword: 'required',
+                      dataPath: (dataPath || '') + '.keymaps[\'' + key1 + '\']',
+                      schemaPath: '#/properties/keymaps/patternProperties/.*/required',
+                      params: {
+                        missingProperty: 'type'
+                      },
+                      message: 'should have required property \'type\''
+                    }];
+                    return false;
+                  } else {
+                    var errs_3 = errors;
+                    if (typeof data2.type !== "string") {
+                      validate.errors = [{
+                        keyword: 'type',
+                        dataPath: (dataPath || '') + '.keymaps[\'' + key1 + '\'].type',
+                        schemaPath: '#/properties/keymaps/patternProperties/.*/properties/type/type',
+                        params: {
+                          type: 'string'
+                        },
+                        message: 'should be string'
+                      }];
+                      return false;
+                    }
+                    var valid3 = errors === errs_3;
+                  }
+                }
+              } else {
+                validate.errors = [{
+                  keyword: 'type',
+                  dataPath: (dataPath || '') + '.keymaps[\'' + key1 + '\']',
+                  schemaPath: '#/properties/keymaps/patternProperties/.*/type',
+                  params: {
+                    type: 'object'
+                  },
+                  message: 'should be object'
+                }];
+                return false;
+              }
+              var valid2 = errors === errs_2;
+              if (!valid2) break;
+            } else valid2 = true;
+          }
+        } else {
+          validate.errors = [{
+            keyword: 'type',
+            dataPath: (dataPath || '') + '.keymaps',
+            schemaPath: '#/properties/keymaps/type',
+            params: {
+              type: 'object'
+            },
+            message: 'should be object'
+          }];
+          return false;
+        }
+        var valid1 = errors === errs_1;
+      }
+      if (valid1) {
+        var data1 = data.search;
+        if (data1 === undefined) {
+          valid1 = true;
+        } else {
+          var errs_1 = errors;
+          if ((data1 && typeof data1 === "object" && !Array.isArray(data1))) {
+            if (true) {
+              var errs__1 = errors;
+              var valid2 = true;
+              if (data1.default === undefined) {
+                valid2 = false;
+                validate.errors = [{
+                  keyword: 'required',
+                  dataPath: (dataPath || '') + '.search',
+                  schemaPath: '#/properties/search/required',
+                  params: {
+                    missingProperty: 'default'
+                  },
+                  message: 'should have required property \'default\''
+                }];
+                return false;
+              } else {
+                var errs_2 = errors;
+                if (typeof data1.default !== "string") {
+                  validate.errors = [{
+                    keyword: 'type',
+                    dataPath: (dataPath || '') + '.search.default',
+                    schemaPath: '#/properties/search/properties/default/type',
+                    params: {
+                      type: 'string'
+                    },
+                    message: 'should be string'
+                  }];
+                  return false;
+                }
+                var valid2 = errors === errs_2;
+              }
+              if (valid2) {
+                var data2 = data1.engines;
+                if (data2 === undefined) {
+                  valid2 = true;
+                } else {
+                  var errs_2 = errors;
+                  if ((data2 && typeof data2 === "object" && !Array.isArray(data2))) {
+                    var errs__2 = errors;
+                    var valid3 = true;
+                    for (var key2 in data2) {
+                      if (pattern0.test(key2)) {
+                        var errs_3 = errors;
+                        if (typeof data2[key2] !== "string") {
+                          validate.errors = [{
+                            keyword: 'type',
+                            dataPath: (dataPath || '') + '.search.engines[\'' + key2 + '\']',
+                            schemaPath: '#/properties/search/properties/engines/patternProperties/.*/type',
+                            params: {
+                              type: 'string'
+                            },
+                            message: 'should be string'
+                          }];
+                          return false;
+                        }
+                        var valid3 = errors === errs_3;
+                        if (!valid3) break;
+                      } else valid3 = true;
+                    }
+                  } else {
+                    validate.errors = [{
+                      keyword: 'type',
+                      dataPath: (dataPath || '') + '.search.engines',
+                      schemaPath: '#/properties/search/properties/engines/type',
+                      params: {
+                        type: 'object'
+                      },
+                      message: 'should be object'
+                    }];
+                    return false;
+                  }
+                  var valid2 = errors === errs_2;
+                }
+              }
+            }
+          } else {
+            validate.errors = [{
+              keyword: 'type',
+              dataPath: (dataPath || '') + '.search',
+              schemaPath: '#/properties/search/type',
+              params: {
+                type: 'object'
+              },
+              message: 'should be object'
+            }];
+            return false;
+          }
+          var valid1 = errors === errs_1;
+        }
+        if (valid1) {
+          var data1 = data.properties;
+          if (data1 === undefined) {
+            valid1 = true;
+          } else {
+            var errs_1 = errors;
+            if ((data1 && typeof data1 === "object" && !Array.isArray(data1))) {
+              var errs__1 = errors;
+              var valid2 = true;
+              if (data1.hintchars === undefined) {
+                valid2 = true;
+              } else {
+                var errs_2 = errors;
+                if (typeof data1.hintchars !== "string") {
+                  validate.errors = [{
+                    keyword: 'type',
+                    dataPath: (dataPath || '') + '.properties.hintchars',
+                    schemaPath: '#/properties/properties/properties/hintchars/type',
+                    params: {
+                      type: 'string'
+                    },
+                    message: 'should be string'
+                  }];
+                  return false;
+                }
+                var valid2 = errors === errs_2;
+              }
+              if (valid2) {
+                if (data1.smoothscroll === undefined) {
+                  valid2 = true;
+                } else {
+                  var errs_2 = errors;
+                  if (typeof data1.smoothscroll !== "boolean") {
+                    validate.errors = [{
+                      keyword: 'type',
+                      dataPath: (dataPath || '') + '.properties.smoothscroll',
+                      schemaPath: '#/properties/properties/properties/smoothscroll/type',
+                      params: {
+                        type: 'boolean'
+                      },
+                      message: 'should be boolean'
+                    }];
+                    return false;
+                  }
+                  var valid2 = errors === errs_2;
+                }
+                if (valid2) {
+                  if (data1.complete === undefined) {
+                    valid2 = true;
+                  } else {
+                    var errs_2 = errors;
+                    if (typeof data1.complete !== "string") {
+                      validate.errors = [{
+                        keyword: 'type',
+                        dataPath: (dataPath || '') + '.properties.complete',
+                        schemaPath: '#/properties/properties/properties/complete/type',
+                        params: {
+                          type: 'string'
+                        },
+                        message: 'should be string'
+                      }];
+                      return false;
+                    }
+                    var valid2 = errors === errs_2;
+                  }
+                }
+              }
+            } else {
+              validate.errors = [{
+                keyword: 'type',
+                dataPath: (dataPath || '') + '.properties',
+                schemaPath: '#/properties/properties/type',
+                params: {
+                  type: 'object'
+                },
+                message: 'should be object'
+              }];
+              return false;
+            }
+            var valid1 = errors === errs_1;
+          }
+          if (valid1) {
+            var data1 = data.blacklist;
+            if (data1 === undefined) {
+              valid1 = true;
+            } else {
+              var errs_1 = errors;
+              if (Array.isArray(data1)) {
+                var errs__1 = errors;
+                var valid1;
+                for (var i1 = 0; i1 < data1.length; i1++) {
+                  var data2 = data1[i1];
+                  var errs_2 = errors;
+                  var errs__2 = errors;
+                  var valid2 = false;
+                  var errs_3 = errors;
+                  if (typeof data2 !== "string") {
+                    var err = {
+                      keyword: 'type',
+                      dataPath: (dataPath || '') + '.blacklist[' + i1 + ']',
+                      schemaPath: '#/properties/blacklist/items/anyOf/0/type',
+                      params: {
+                        type: 'string'
+                      },
+                      message: 'should be string'
+                    };
+                    if (vErrors === null) vErrors = [err];
+                    else vErrors.push(err);
+                    errors++;
+                  }
+                  var valid3 = errors === errs_3;
+                  valid2 = valid2 || valid3;
+                  if (!valid2) {
+                    var errs_3 = errors;
+                    if ((data2 && typeof data2 === "object" && !Array.isArray(data2))) {
+                      if (true) {
+                        var errs__3 = errors;
+                        var valid4 = true;
+                        if (data2.url === undefined) {
+                          valid4 = false;
+                          var err = {
+                            keyword: 'required',
+                            dataPath: (dataPath || '') + '.blacklist[' + i1 + ']',
+                            schemaPath: '#/properties/blacklist/items/anyOf/1/required',
+                            params: {
+                              missingProperty: 'url'
+                            },
+                            message: 'should have required property \'url\''
+                          };
+                          if (vErrors === null) vErrors = [err];
+                          else vErrors.push(err);
+                          errors++;
+                        } else {
+                          var errs_4 = errors;
+                          if (typeof data2.url !== "string") {
+                            var err = {
+                              keyword: 'type',
+                              dataPath: (dataPath || '') + '.blacklist[' + i1 + '].url',
+                              schemaPath: '#/properties/blacklist/items/anyOf/1/properties/url/type',
+                              params: {
+                                type: 'string'
+                              },
+                              message: 'should be string'
+                            };
+                            if (vErrors === null) vErrors = [err];
+                            else vErrors.push(err);
+                            errors++;
+                          }
+                          var valid4 = errors === errs_4;
+                        }
+                        if (valid4) {
+                          var data3 = data2.keys;
+                          if (data3 === undefined) {
+                            valid4 = false;
+                            var err = {
+                              keyword: 'required',
+                              dataPath: (dataPath || '') + '.blacklist[' + i1 + ']',
+                              schemaPath: '#/properties/blacklist/items/anyOf/1/required',
+                              params: {
+                                missingProperty: 'keys'
+                              },
+                              message: 'should have required property \'keys\''
+                            };
+                            if (vErrors === null) vErrors = [err];
+                            else vErrors.push(err);
+                            errors++;
+                          } else {
+                            var errs_4 = errors;
+                            if (Array.isArray(data3)) {
+                              var errs__4 = errors;
+                              var valid4;
+                              for (var i4 = 0; i4 < data3.length; i4++) {
+                                var errs_5 = errors;
+                                if (typeof data3[i4] !== "string") {
+                                  var err = {
+                                    keyword: 'type',
+                                    dataPath: (dataPath || '') + '.blacklist[' + i1 + '].keys[' + i4 + ']',
+                                    schemaPath: '#/properties/blacklist/items/anyOf/1/properties/keys/items/type',
+                                    params: {
+                                      type: 'string'
+                                    },
+                                    message: 'should be string'
+                                  };
+                                  if (vErrors === null) vErrors = [err];
+                                  else vErrors.push(err);
+                                  errors++;
+                                }
+                                var valid5 = errors === errs_5;
+                                if (!valid5) break;
+                              }
+                            } else {
+                              var err = {
+                                keyword: 'type',
+                                dataPath: (dataPath || '') + '.blacklist[' + i1 + '].keys',
+                                schemaPath: '#/properties/blacklist/items/anyOf/1/properties/keys/type',
+                                params: {
+                                  type: 'array'
+                                },
+                                message: 'should be array'
+                              };
+                              if (vErrors === null) vErrors = [err];
+                              else vErrors.push(err);
+                              errors++;
+                            }
+                            var valid4 = errors === errs_4;
+                          }
+                        }
+                      }
+                    } else {
+                      var err = {
+                        keyword: 'type',
+                        dataPath: (dataPath || '') + '.blacklist[' + i1 + ']',
+                        schemaPath: '#/properties/blacklist/items/anyOf/1/type',
+                        params: {
+                          type: 'object'
+                        },
+                        message: 'should be object'
+                      };
+                      if (vErrors === null) vErrors = [err];
+                      else vErrors.push(err);
+                      errors++;
+                    }
+                    var valid3 = errors === errs_3;
+                    valid2 = valid2 || valid3;
+                  }
+                  if (!valid2) {
+                    var err = {
+                      keyword: 'anyOf',
+                      dataPath: (dataPath || '') + '.blacklist[' + i1 + ']',
+                      schemaPath: '#/properties/blacklist/items/anyOf',
+                      params: {},
+                      message: 'should match some schema in anyOf'
+                    };
+                    if (vErrors === null) vErrors = [err];
+                    else vErrors.push(err);
+                    errors++;
+                    validate.errors = vErrors;
+                    return false;
+                  } else {
+                    errors = errs__2;
+                    if (vErrors !== null) {
+                      if (errs__2) vErrors.length = errs__2;
+                      else vErrors = null;
+                    }
+                  }
+                  var valid2 = errors === errs_2;
+                  if (!valid2) break;
+                }
+              } else {
+                validate.errors = [{
+                  keyword: 'type',
+                  dataPath: (dataPath || '') + '.blacklist',
+                  schemaPath: '#/properties/blacklist/type',
+                  params: {
+                    type: 'array'
+                  },
+                  message: 'should be array'
+                }];
+                return false;
+              }
+              var valid1 = errors === errs_1;
+            }
+          }
+        }
+      }
+    } else {
+      validate.errors = [{
+        keyword: 'type',
+        dataPath: (dataPath || '') + "",
+        schemaPath: '#/type',
+        params: {
+          type: 'object'
+        },
+        message: 'should be object'
+      }];
+      return false;
+    }
+    validate.errors = vErrors;
+    return errors === 0;
+  };
+})();
+validate.schema = {
+  "type": "object",
+  "properties": {
+    "keymaps": {
+      "type": "object",
+      "patternProperties": {
+        ".*": {
+          "type": "object",
+          "properties": {
+            "type": {
+              "type": "string"
+            }
+          },
+          "required": ["type"]
+        }
+      }
+    },
+    "search": {
+      "type": "object",
+      "properties": {
+        "default": {
+          "type": "string"
+        },
+        "engines": {
+          "type": "object",
+          "patternProperties": {
+            ".*": {
+              "type": "string"
+            }
+          }
+        }
+      },
+      "required": ["default"]
+    },
+    "properties": {
+      "type": "object",
+      "properties": {
+        "hintchars": {
+          "type": "string"
+        },
+        "smoothscroll": {
+          "type": "boolean"
+        },
+        "complete": {
+          "type": "string"
+        }
+      }
+    },
+    "blacklist": {
+      "type": "array",
+      "items": {
+        "anyOf": [{
+          "type": "string"
+        }, {
+          "type": "object",
+          "properties": {
+            "url": {
+              "type": "string"
+            },
+            "keys": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            }
+          },
+          "required": ["url", "keys"]
+        }]
+      }
+    }
+  }
+};
+validate.errors = null;
+module.exports = validate;
\ No newline at end of file