diff --git a/README.md b/README.md
index f9b26265..78dd1597 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,7 @@ ReDoc makes use of the following [vendor extensions](http://swagger.io/specifica
   * **number**: A fixed number of pixels to be used as offset
   * **selector**: selector of the element to be used for specifying the offset. The distance from the top of the page to the element's bottom will be used as offset.
   * **function**: A getter function. Must return a number representing the offset (in pixels).
+* `suppress-warnings` - if set, warnings are not rendered at the top of page (they still are logged to the console)
 
 ## Advanced usage
 Instead of adding `spec-url` attribute to the `<redoc>` element you can initialize ReDoc via globally exposed `Redoc` object:
diff --git a/lib/components/Redoc/redoc.html b/lib/components/Redoc/redoc.html
index 8e166bd8..0a4bcaa4 100644
--- a/lib/components/Redoc/redoc.html
+++ b/lib/components/Redoc/redoc.html
@@ -4,7 +4,8 @@
       <side-menu> </side-menu>
   </div>
   <div id="api-content">
-    <api-info> </api-info>
+    <warnings></warnings>
+    <api-info></api-info>
     <methods-list> </methods-list>
     <footer>
       <div class="powered-by-badge">
diff --git a/lib/components/Redoc/redoc.ts b/lib/components/Redoc/redoc.ts
index b36ce936..970f59fa 100644
--- a/lib/components/Redoc/redoc.ts
+++ b/lib/components/Redoc/redoc.ts
@@ -12,11 +12,12 @@ import { ApiInfo } from '../ApiInfo/api-info';
 import { ApiLogo } from '../ApiLogo/api-logo';
 import { MethodsList } from '../MethodsList/methods-list';
 import { SideMenu } from '../SideMenu/side-menu';
+import { Warnings } from '../Warnings/warnings';
 
 import { StickySidebar } from '../../shared/components/index';
 import {SpecManager} from '../../utils/SpecManager';
 import { OptionsService, RedocEventsService, MenuService,
-  ScrollService, Hash } from '../../services/index';
+  ScrollService, Hash, WarningsService } from '../../services/index';
 
 var dom = new BrowserDomAdapter();
 var _modeLocked = false;
@@ -30,10 +31,11 @@ var _modeLocked = false;
     ScrollService,
     Hash,
     MenuService,
+    WarningsService
   ],
   templateUrl: './redoc.html',
   styleUrls: ['./redoc.css'],
-  directives: [ ApiInfo, ApiLogo, MethodsList, SideMenu, StickySidebar ],
+  directives: [ ApiInfo, ApiLogo, MethodsList, SideMenu, StickySidebar, Warnings ],
   detect: true,
   onPushOnly: false
 })
diff --git a/lib/components/Warnings/warnings.html b/lib/components/Warnings/warnings.html
new file mode 100644
index 00000000..324fdc88
--- /dev/null
+++ b/lib/components/Warnings/warnings.html
@@ -0,0 +1,4 @@
+<div *ngIf="shown">
+  <a class="warnings-close" (click)="close()">×</a>
+  <div class="message" *ngFor="let message of warnings">{{message}}</div>
+</div>
diff --git a/lib/components/Warnings/warnings.scss b/lib/components/Warnings/warnings.scss
new file mode 100644
index 00000000..c5b2b9dc
--- /dev/null
+++ b/lib/components/Warnings/warnings.scss
@@ -0,0 +1,33 @@
+:host {
+  width: 60%;
+  display: block;
+}
+
+.message {
+  padding: 5px 40px;
+  background-color: #fcf8e3;
+  color: #8a6d3b;
+
+  &:before {
+    content: "Warning: ";
+    font-weight: bold;
+  }
+}
+
+.warnings-close {
+  font-size: 150%;
+  color: black;
+  opacity: 0.4;
+  float: right;
+  margin: 5px 20px 0 0;
+  font-weight: bold;
+  cursor: pointer;
+
+  &:hover {
+    opacity: 0.8;
+  }
+}
+
+p {
+  display: inline;
+}
diff --git a/lib/components/Warnings/warnings.ts b/lib/components/Warnings/warnings.ts
new file mode 100644
index 00000000..380ce5ce
--- /dev/null
+++ b/lib/components/Warnings/warnings.ts
@@ -0,0 +1,31 @@
+'use strict';
+
+import { SpecManager, RedocComponent, BaseComponent } from '../base';
+import { WarningsService, OptionsService } from '../../services/index';
+
+@RedocComponent({
+  selector: 'warnings',
+  styleUrls: ['./warnings.css'],
+  templateUrl: './warnings.html',
+  detect: true,
+  onPushOnly: false
+})
+export class Warnings extends BaseComponent {
+  warnings: Array<string>;
+  shown: boolean;
+  constructor(specMgr:SpecManager, optionsMgr: OptionsService) {
+    super(specMgr);
+    this.shown = !optionsMgr.options.suppressWarnings;
+  }
+
+  init() {
+    WarningsService.warnings.subscribe((warns) => {
+      console.log(warns);
+      this.warnings = warns;
+    });
+  }
+
+  close() {
+    this.shown = false;
+  }
+}
diff --git a/lib/services/index.ts b/lib/services/index.ts
index 02376ee0..a54b64e0 100644
--- a/lib/services/index.ts
+++ b/lib/services/index.ts
@@ -7,3 +7,4 @@ export * from './scroll.service';
 export * from './hash.service';
 export * from './schema-normalizer.service';
 export * from './schema-helper.service';
+export * from './warnings.service';
diff --git a/lib/services/options.service.ts b/lib/services/options.service.ts
index 4ebcb511..52e14e23 100644
--- a/lib/services/options.service.ts
+++ b/lib/services/options.service.ts
@@ -9,7 +9,7 @@ const defaults = {
   debugMode: false//global && global.redocDebugMode
 };
 
-const OPTION_NAMES = new Set(['scrollYOffset', 'disableLazySchemas', 'specUrl']);
+const OPTION_NAMES = new Set(['scrollYOffset', 'disableLazySchemas', 'specUrl', 'suppressWarnings']);
 
 @Injectable()
 export class OptionsService {
@@ -70,5 +70,6 @@ export class OptionsService {
     }
 
     if (isString(this._options.disableLazySchemas)) this._options.disableLazySchemas = true;
+    if (isString(this._options.suppressWarnings)) this._options.suppressWarnings = true;
   }
 }
diff --git a/lib/services/schema-helper.service.ts b/lib/services/schema-helper.service.ts
index 4f1c9b16..048bcc78 100644
--- a/lib/services/schema-helper.service.ts
+++ b/lib/services/schema-helper.service.ts
@@ -2,6 +2,7 @@
 import { JsonPointer } from '../utils/JsonPointer';
 import { SpecManager } from '../utils/SpecManager';
 import {methods as swaggerMethods, keywordTypes} from  '../utils/swagger-defs';
+import { WarningsService } from './warnings.service';
 import slugify from 'slugify';
 
 interface PropertyPreprocessOptions {
@@ -32,10 +33,10 @@ const injectors = {
     inject: (injectTo, propertySchema, pointer) => {
       injectTo.type = SchemaHelper.detectType(propertySchema);
       propertySchema.type = injectTo.type;
-      let message = `No "type" specified at ${pointer}. `;
-      message += injectTo.type ? `Automatically detected: "${injectTo.type}"` :
-        `Can't detect automatically`;
-      console.warn(message);
+      if (injectTo.type) {
+        let message = `No "type" specified at "${pointer}". Automatically detected: "${injectTo.type}"`;
+        WarningsService.warn(message);
+      }
     }
   },
   general: {
diff --git a/lib/services/schema-normalizer.service.ts b/lib/services/schema-normalizer.service.ts
index f493c9f7..57a54bd1 100644
--- a/lib/services/schema-normalizer.service.ts
+++ b/lib/services/schema-normalizer.service.ts
@@ -3,6 +3,7 @@ import { Injectable } from '@angular/core';
 import { SpecManager } from '../utils/SpecManager';
 import { JsonPointer } from '../utils/JsonPointer';
 import { defaults } from '../utils/helpers';
+import { WarningsService } from './warnings.service';
 
 interface Reference {
   $ref: string;
@@ -127,20 +128,22 @@ class AllOfMerger {
   private static checkCanMerge(subSchema, into) {
     // TODO: add support for merge array schemas
     if (typeof subSchema !== 'object') {
-      let errMessage = `Items of allOf should be Object: ${typeof subSchema} found
-        ${subSchema}`;
+      let errMessage = `Items of allOf should be Object: ${typeof subSchema} found ` +
+        `${subSchema} at "#${into._pointer}"`;
       throw new Error(errMessage);
     }
 
     if (into.type && subSchema.type && into.type !== subSchema.type) {
-      let errMessage = `allOf merging error: schemas with different types can't be merged`;
+      let errMessage = `allOf merging error: schemas with different types can't be merged: ` +
+      `"${into.type}" and "${subSchema.type}" at "#${into._pointer}"`;
       throw new Error(errMessage);
     }
 
     if (into.type === 'array') {
-      console.warn('allOf: subschemas with type array are not supported yet');
+      WarningsService.warn('allOf: subschemas with type "array" are not supported yet');
     }
     // TODO: add check if can be merged correctly (no different properties with the same name)
+    // TODO: merge properties
   }
 }
 
@@ -191,8 +194,8 @@ class SchemaDereferencer {
 
     let keysCount = Object.keys(schema).length;
     if ( keysCount > 2 || (keysCount === 2 && !schema.description) ) {
-      console.warn(`other properties defined at the same level as $ref at '${pointer}'.
-        They are IGNORRED according to JsonSchema spec`);
+      WarningsService.warn(`Other properties are defined at the same level as $ref at "#${pointer}". ` +
+        'They are IGNORRED according to the JsonSchema spec');
       resolved.description = resolved.description || schema.description;
     }
 
diff --git a/lib/services/warnings.service.ts b/lib/services/warnings.service.ts
new file mode 100644
index 00000000..54c29754
--- /dev/null
+++ b/lib/services/warnings.service.ts
@@ -0,0 +1,23 @@
+'use strict';
+import { Injectable } from '@angular/core';
+import { Subject } from 'rxjs';
+
+@Injectable()
+export class WarningsService {
+  private static _warnings: Array<string> = [];
+  private static _warningsObs = new Subject<Array<string>>();
+
+  static get warnings() {
+    return WarningsService._warningsObs;
+  }
+
+  static hasWarnings() {
+    return !!WarningsService._warnings.length;
+  }
+
+  static warn(message:string) {
+    WarningsService._warnings.push(message);
+    WarningsService._warningsObs.next(WarningsService._warnings);
+    console.warn(message);
+  }
+}