diff --git a/frontend/components/DropToImport/DropToImport.js b/frontend/components/DropToImport/DropToImport.js
new file mode 100644
index 00000000..944dde6f
--- /dev/null
+++ b/frontend/components/DropToImport/DropToImport.js
@@ -0,0 +1,108 @@
+// @flow
+import React, { Component } from 'react';
+import { inject } from 'mobx-react';
+import invariant from 'invariant';
+import _ from 'lodash';
+import Dropzone from 'react-dropzone';
+import Document from 'models/Document';
+import DocumentsStore from 'stores/DocumentsStore';
+import LoadingIndicator from 'components/LoadingIndicator';
+
+class DropToImport extends Component {
+  state: {
+    isImporting: boolean,
+  };
+  props: {
+    children?: React$Element<any>,
+    collectionId: string,
+    documentId?: string,
+    activeClassName?: string,
+    rejectClassName?: string,
+    documents: DocumentsStore,
+    history: Object,
+  };
+  state = {
+    isImporting: false,
+  };
+
+  importFile = async ({ file, documentId, collectionId, redirect }) => {
+    const reader = new FileReader();
+
+    reader.onload = async ev => {
+      const text = ev.target.result;
+      let data = {
+        parentDocument: undefined,
+        collection: { id: collectionId },
+        text,
+      };
+
+      if (documentId) {
+        data.parentDocument = {
+          id: documentId,
+        };
+      }
+
+      let document = new Document(data);
+      document = await document.save();
+      this.props.documents.add(document);
+
+      if (redirect && this.props.history) {
+        this.props.history.push(document.url);
+      }
+    };
+    reader.readAsText(file);
+  };
+
+  onDropAccepted = async (files = []) => {
+    this.setState({ isImporting: true });
+
+    try {
+      let collectionId = this.props.collectionId;
+      const documentId = this.props.documentId;
+      const redirect = files.length === 1;
+
+      if (documentId && !collectionId) {
+        const document = await this.props.documents.fetch(documentId);
+        invariant(document, 'Document not available');
+        collectionId = document.collection.id;
+      }
+
+      for (const file of files) {
+        await this.importFile({ file, documentId, collectionId, redirect });
+      }
+    } catch (err) {
+      // TODO: show error alert.
+    } finally {
+      this.setState({ isImporting: false });
+    }
+  };
+
+  render() {
+    const props = _.omit(
+      this.props,
+      'history',
+      'documentId',
+      'collectionId',
+      'documents'
+    );
+
+    return (
+      <Dropzone
+        accept="text/markdown, text/plain"
+        onDropAccepted={this.onDropAccepted}
+        style={{}}
+        disableClick
+        disablePreview
+        multiple
+        {...props}
+      >
+        <span>
+          {this.state.isImporting && <LoadingIndicator />}
+          {this.props.children}
+        </span>
+      </Dropzone>
+    );
+  }
+}
+
+export default inject('documents')(DropToImport);
diff --git a/frontend/components/DropToImport/index.js b/frontend/components/DropToImport/index.js
new file mode 100644
index 00000000..a95a2a44
--- /dev/null
+++ b/frontend/components/DropToImport/index.js
@@ -0,0 +1,3 @@
+// @flow
+import DropToImport from './DropToImport';
+export default DropToImport;
diff --git a/frontend/components/Layout/Layout.js b/frontend/components/Layout/Layout.js
index cb0b7648..eba7cac6 100644
--- a/frontend/components/Layout/Layout.js
+++ b/frontend/components/Layout/Layout.js
@@ -7,11 +7,12 @@ import { observer, inject } from 'mobx-react';
 import _ from 'lodash';
 import keydown from 'react-keydown';
 import Flex from 'components/Flex';
-import { textColor } from 'styles/constants.scss';
+import { color, layout } from 'styles/constants';
 
 import DropdownMenu, { MenuItem } from 'components/DropdownMenu';
 import { LoadingIndicatorBar } from 'components/LoadingIndicator';
 import Scrollable from 'components/Scrollable';
+import Avatar from 'components/Avatar';
 
 import SidebarCollection from './components/SidebarCollection';
 import SidebarCollectionList from './components/SidebarCollectionList';
@@ -115,8 +116,9 @@ type Props = {
                       ? <SidebarCollection
                           document={ui.activeDocument}
                           collection={ui.activeCollection}
+                          history={this.props.history}
                         />
-                      : <SidebarCollectionList />}
+                      : <SidebarCollectionList history={this.props.history} />}
                   </LinkSection>
                 </Scrollable>
               </Flex>
@@ -141,19 +143,13 @@ const LogoLink = styled(Link)`
   margin-top: 15px;
   font-family: 'Atlas Grotesk';
   font-weight: bold;
-  color: ${textColor};
+  color: ${color.text};
   text-decoration: none;
   font-size: 16px;
 `;
 
-const Avatar = styled.img`
-  width: 24px;
-  height: 24px;
-  border-radius: 50%;
-`;
-
 const MenuLink = styled(Link)`
-  color: ${textColor};
+  color: ${color.text};
 `;
 
 const Content = styled(Flex)`
@@ -162,13 +158,13 @@ const Content = styled(Flex)`
   top: 0;
   bottom: 0;
   right: 0;
-  left: ${props => (props.editMode ? 0 : '250px')};
+  left: ${props => (props.editMode ? 0 : layout.sidebarWidth)};
   transition: left 200ms ease-in-out;
 `;
 
 const Sidebar = styled(Flex)`
-  width: 250px;
-  margin-left: ${props => (props.editMode ? '-250px' : 0)};
+  width: ${layout.sidebarWidth};
+  margin-left: ${props => (props.editMode ? `-${layout.sidebarWidth}` : 0)};
   background: rgba(250, 251, 252, 0.71);
   border-right: 1px solid #eceff3;
   transition: margin-left 200ms ease-in-out;
@@ -176,12 +172,12 @@ const Sidebar = styled(Flex)`
 
 const Header = styled(Flex)`
   flex-shrink: 0;
-  padding: 10px 20px;
+  padding: ${layout.padding};
 `;
 
 const LinkSection = styled(Flex)`
   flex-direction: column;
-  padding: 10px 20px;
+  padding: 10px 0;
 `;
 
 export default withRouter(inject('user', 'auth', 'ui', 'collections')(Layout));
diff --git a/frontend/components/Layout/components/SidebarCollection/SidebarCollection.js b/frontend/components/Layout/components/SidebarCollection/SidebarCollection.js
index 3b9329e3..60a5a05d 100644
--- a/frontend/components/Layout/components/SidebarCollection/SidebarCollection.js
+++ b/frontend/components/Layout/components/SidebarCollection/SidebarCollection.js
@@ -2,8 +2,9 @@
 import React from 'react';
 import Flex from 'components/Flex';
 import styled from 'styled-components';
-
+import { layout } from 'styles/constants';
 import SidebarLink from '../SidebarLink';
+import DropToImport from 'components/DropToImport';
 
 import Collection from 'models/Collection';
 import Document from 'models/Document';
@@ -12,24 +13,39 @@ import type { NavigationNode } from 'types';
 type Props = {
   collection: ?Collection,
   document: ?Document,
+  history: Object,
+};
+
+const activeStyle = {
+  color: '#000',
+  background: '#E1E1E1',
 };
 
 class SidebarCollection extends React.Component {
   props: Props;
 
-  renderDocuments(documentList: Array<NavigationNode>) {
-    const { document } = this.props;
+  renderDocuments(documentList: Array<NavigationNode>, depth = 0) {
+    const { document, history } = this.props;
+    const canDropToImport = depth === 0;
 
     if (document) {
       return documentList.map(doc => (
         <Flex column key={doc.id}>
-          <SidebarLink key={doc.id} to={doc.url}>
-            {doc.title}
-          </SidebarLink>
+          {canDropToImport &&
+            <DropToImport
+              history={history}
+              documentId={doc.id}
+              activeStyle={activeStyle}
+            >
+              <SidebarLink to={doc.url}>{doc.title}</SidebarLink>
+            </DropToImport>}
+          {!canDropToImport &&
+            <SidebarLink to={doc.url}>{doc.title}</SidebarLink>}
+
           {(document.pathToDocument.includes(doc.id) ||
             document.id === doc.id) &&
             <Children column>
-              {doc.children && this.renderDocuments(doc.children)}
+              {doc.children && this.renderDocuments(doc.children, depth + 1)}
             </Children>}
         </Flex>
       ));
@@ -57,6 +73,7 @@ const Header = styled(Flex)`
   text-transform: uppercase;
   color: #9FA6AB;
   letter-spacing: 0.04em;
+  padding: 0 ${layout.hpadding};
 `;
 
 const Children = styled(Flex)`
diff --git a/frontend/components/Layout/components/SidebarCollectionList/SidebarCollectionList.js b/frontend/components/Layout/components/SidebarCollectionList/SidebarCollectionList.js
index 0f865e3d..6d292dbe 100644
--- a/frontend/components/Layout/components/SidebarCollectionList/SidebarCollectionList.js
+++ b/frontend/components/Layout/components/SidebarCollectionList/SidebarCollectionList.js
@@ -3,23 +3,37 @@ import React from 'react';
 import { observer, inject } from 'mobx-react';
 import Flex from 'components/Flex';
 import styled from 'styled-components';
+import { layout } from 'styles/constants';
 
 import SidebarLink from '../SidebarLink';
+import DropToImport from 'components/DropToImport';
 
 import CollectionsStore from 'stores/CollectionsStore';
 
 type Props = {
+  history: Object,
   collections: CollectionsStore,
 };
 
-const SidebarCollectionList = observer(({ collections }: Props) => {
+const activeStyle = {
+  color: '#000',
+  background: '#E1E1E1',
+};
+
+const SidebarCollectionList = observer(({ history, collections }: Props) => {
   return (
     <Flex column>
       <Header>Collections</Header>
       {collections.data.map(collection => (
-        <SidebarLink key={collection.id} to={collection.url}>
-          {collection.name}
-        </SidebarLink>
+        <DropToImport
+          history={history}
+          collectionId={collection.id}
+          activeStyle={activeStyle}
+        >
+          <SidebarLink key={collection.id} to={collection.url}>
+            {collection.name}
+          </SidebarLink>
+        </DropToImport>
       ))}
     </Flex>
   );
@@ -31,6 +45,7 @@ const Header = styled(Flex)`
   text-transform: uppercase;
   color: #9FA6AB;
   letter-spacing: 0.04em;
+  padding: 0 ${layout.hpadding};
 `;
 
 export default inject('collections')(SidebarCollectionList);
diff --git a/frontend/components/Layout/components/SidebarLink/SidebarLink.js b/frontend/components/Layout/components/SidebarLink/SidebarLink.js
index 1e73d5e1..7df81e86 100644
--- a/frontend/components/Layout/components/SidebarLink/SidebarLink.js
+++ b/frontend/components/Layout/components/SidebarLink/SidebarLink.js
@@ -1,7 +1,8 @@
 // @flow
 import React from 'react';
 import { NavLink } from 'react-router-dom';
-import Flex from 'components/Flex';
+import { layout, color } from 'styles/constants';
+import { darken } from 'polished';
 import styled from 'styled-components';
 
 const activeStyle = {
@@ -9,18 +10,16 @@ const activeStyle = {
 };
 
 function SidebarLink(props: Object) {
-  return (
-    <LinkContainer>
-      <NavLink exact {...props} activeStyle={activeStyle} />
-    </LinkContainer>
-  );
+  return <StyledNavLink exact {...props} activeStyle={activeStyle} />;
 }
 
-const LinkContainer = styled(Flex)`
-  padding: 5px 0;
+const StyledNavLink = styled(NavLink)`
+  display: block;
+  padding: 5px ${layout.hpadding};
+  color: ${color.slateDark};
 
-  a {
-    color: #848484;
+  &:hover {
+    color: ${darken(0.1, color.slateDark)};
   }
 `;
 
diff --git a/frontend/models/Document.js b/frontend/models/Document.js
index 097e4563..db35d742 100644
--- a/frontend/models/Document.js
+++ b/frontend/models/Document.js
@@ -10,7 +10,7 @@ import type { User } from 'types';
 import Collection from './Collection';
 
 const parseHeader = text => {
-  const firstLine = text.split(/\r?\n/)[0];
+  const firstLine = text.trim().split(/\r?\n/)[0];
   return firstLine.replace(/^#/, '').trim();
 };
 
@@ -20,7 +20,7 @@ class Document {
   errors: ErrorsStore;
 
   collaborators: Array<User>;
-  collection: Collection;
+  collection: $Shape<Collection>;
   createdAt: string;
   createdBy: User;
   html: string;
@@ -113,7 +113,7 @@ class Document {
   };
 
   @action save = async () => {
-    if (this.isSaving) return;
+    if (this.isSaving) return this;
     this.isSaving = true;
 
     try {
@@ -125,11 +125,16 @@ class Document {
           text: this.text,
         });
       } else {
-        res = await client.post('/documents.create', {
+        const data = {
+          parentDocument: undefined,
           collection: this.collection.id,
           title: this.title,
           text: this.text,
-        });
+        };
+        if (this.parentDocument) {
+          data.parentDocument = this.parentDocument.id;
+        }
+        res = await client.post('/documents.create', data);
       }
 
       invariant(res && res.data, 'Data should be available');
diff --git a/frontend/scenes/Document/Document.js b/frontend/scenes/Document/Document.js
index e653ab27..017e6f1f 100644
--- a/frontend/scenes/Document/Document.js
+++ b/frontend/scenes/Document/Document.js
@@ -5,12 +5,14 @@ import styled from 'styled-components';
 import { observer, inject } from 'mobx-react';
 import { withRouter, Prompt } from 'react-router';
 import Flex from 'components/Flex';
+import { layout } from 'styles/constants';
 
 import Document from 'models/Document';
 import UiStore from 'stores/UiStore';
 import DocumentsStore from 'stores/DocumentsStore';
 import Menu from './components/Menu';
 import Editor from 'components/Editor';
+import DropToImport from 'components/DropToImport';
 import { HeaderAction, SaveAction } from 'components/Layout';
 import LoadingIndicator from 'components/LoadingIndicator';
 import PublishingInfo from 'components/PublishingInfo';
@@ -39,6 +41,7 @@ type Props = {
     newDocument?: Document,
   };
   state = {
+    isDragging: false,
     isLoading: false,
     newDocument: undefined,
   };
@@ -125,6 +128,14 @@ type Props = {
     this.props.history.goBack();
   };
 
+  onStartDragging = () => {
+    this.setState({ isDragging: true });
+  };
+
+  onStopDragging = () => {
+    this.setState({ isDragging: false });
+  };
+
   render() {
     const isNew = this.props.newDocument;
     const isEditing = this.props.match.params.edit || isNew;
@@ -133,6 +144,10 @@ type Props = {
 
     return (
       <Container column auto>
+        {this.state.isDragging &&
+          <DropHere align="center" justify="center">
+            Drop files here to import into Atlas.
+          </DropHere>}
         {titleText && <PageTitle title={titleText} />}
         {this.state.isLoading && <LoadingIndicator />}
         {isFetching &&
@@ -141,66 +156,86 @@ type Props = {
           </CenteredContent>}
         {!isFetching &&
           this.document &&
-          <PagePadding justify="center" auto>
-            <Prompt
-              when={this.document.hasPendingChanges}
-              message={DISCARD_CHANGES}
-            />
-            <DocumentContainer>
-              <Editor
-                key={this.document.id}
-                text={this.document.text}
-                onImageUploadStart={this.onImageUploadStart}
-                onImageUploadStop={this.onImageUploadStop}
-                onChange={this.onChange}
-                onSave={this.onSave}
-                onCancel={this.onCancel}
-                onStar={this.document.star}
-                onUnstar={this.document.unstar}
-                starred={this.document.starred}
-                readOnly={!isEditing}
+          <DropToImport
+            documentId={this.document.id}
+            history={this.props.history}
+            onDragEnter={this.onStartDragging}
+            onDragLeave={this.onStopDragging}
+            onDrop={this.onStopDragging}
+          >
+            <PagePadding justify="center" auto>
+              <Prompt
+                when={this.document.hasPendingChanges}
+                message={DISCARD_CHANGES}
               />
-            </DocumentContainer>
-            <Meta align="center" readOnly={!isEditing}>
-              {!isEditing &&
-                <PublishingInfo
-                  collaborators={this.document.collaborators}
-                  createdAt={this.document.createdAt}
-                  createdBy={this.document.createdBy}
-                  updatedAt={this.document.updatedAt}
-                  updatedBy={this.document.updatedBy}
-                />}
-              {!isEditing &&
-                <DocumentViews
-                  count={this.document.views}
-                  documentId={this.document.id}
-                />}
-              <Flex align="center">
-                <HeaderAction>
-                  {isEditing
-                    ? <SaveAction
-                        onClick={this.onSave.bind(this, true)}
-                        disabled={get(this.document, 'isSaving')}
-                        isNew={!!isNew}
-                      />
-                    : <a onClick={this.onClickEdit}>Edit</a>}
-                </HeaderAction>
-                {!isEditing && <Menu document={this.document} />}
-              </Flex>
-            </Meta>
-          </PagePadding>}
+              <DocumentContainer>
+                <Editor
+                  key={this.document.id}
+                  text={this.document.text}
+                  onImageUploadStart={this.onImageUploadStart}
+                  onImageUploadStop={this.onImageUploadStop}
+                  onChange={this.onChange}
+                  onSave={this.onSave}
+                  onCancel={this.onCancel}
+                  onStar={this.document.star}
+                  onUnstar={this.document.unstar}
+                  starred={this.document.starred}
+                  readOnly={!isEditing}
+                />
+              </DocumentContainer>
+              <Meta align="center" readOnly={!isEditing}>
+                {!isEditing &&
+                  <PublishingInfo
+                    collaborators={this.document.collaborators}
+                    createdAt={this.document.createdAt}
+                    createdBy={this.document.createdBy}
+                    updatedAt={this.document.updatedAt}
+                    updatedBy={this.document.updatedBy}
+                  />}
+                {!isEditing &&
+                  <DocumentViews
+                    count={this.document.views}
+                    documentId={this.document.id}
+                  />}
+                <Flex align="center">
+                  <HeaderAction>
+                    {isEditing
+                      ? <SaveAction
+                          onClick={this.onSave.bind(this, true)}
+                          disabled={get(this.document, 'isSaving')}
+                          isNew={!!isNew}
+                        />
+                      : <a onClick={this.onClickEdit}>Edit</a>}
+                  </HeaderAction>
+                  {!isEditing && <Menu document={this.document} />}
+                </Flex>
+              </Meta>
+            </PagePadding>
+          </DropToImport>}
       </Container>
     );
   }
 }
 
+const DropHere = styled(Flex)`
+  pointer-events: none;
+  position: fixed;
+  top: 0;
+  left: ${layout.sidebarWidth};
+  bottom: 0;
+  right: 0;
+  text-align: center;
+  background: rgba(255,255,255,.9);
+  z-index: 1;
+`;
+
 const Meta = styled(Flex)`
   justify-content: ${props => (props.readOnly ? 'space-between' : 'flex-end')};
   align-items: flex-start;
   width: 100%;
   position: absolute;
   top: 0;
-  padding: 10px 20px;
+  padding: ${layout.padding};
 `;
 
 const Container = styled(Flex)`
diff --git a/frontend/stores/DocumentsStore.js b/frontend/stores/DocumentsStore.js
index c33195a3..aaffa4b0 100644
--- a/frontend/stores/DocumentsStore.js
+++ b/frontend/stores/DocumentsStore.js
@@ -50,10 +50,14 @@ class DocumentsStore {
       const res = await client.post('/documents.info', { id });
       invariant(res && res.data, 'Document not available');
       const { data } = res;
+      const document = new Document(data);
+
       runInAction('DocumentsStore#fetch', () => {
-        this.data.set(data.id, new Document(data));
+        this.data.set(data.id, document);
         this.isLoaded = true;
       });
+
+      return document;
     } catch (e) {
       this.errors.add('Failed to load documents');
     }
diff --git a/frontend/styles/constants.js b/frontend/styles/constants.js
index cc9cbcc1..d3a09f95 100644
--- a/frontend/styles/constants.js
+++ b/frontend/styles/constants.js
@@ -1,5 +1,14 @@
 // @flow
 
+export const layout = {
+  padding: '1.5vw 1.875vw',
+  vpadding: '1.5vw',
+  hpadding: '1.875vw',
+  sidebarWidth: '22%',
+  sidebarMinWidth: '250px',
+  sidebarMaxWidth: '350px',
+};
+
 export const size = {
   tiny: '2px',
   small: '4px',
@@ -28,6 +37,8 @@ export const fontWeight = {
 };
 
 export const color = {
+  text: '#171B35',
+
   /* Brand */
   primary: '#73DF7B',