diff --git a/scm-webapp/src/main/java/sonia/scm/api/rest/resources/BrowserStreamingOutput.java b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/BrowserStreamingOutput.java
new file mode 100644
index 0000000000..c9f9f5f680
--- /dev/null
+++ b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/BrowserStreamingOutput.java
@@ -0,0 +1,140 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.api.rest.resources;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.repository.PathNotFoundException;
+import sonia.scm.repository.RepositoryBrowser;
+import sonia.scm.repository.RepositoryException;
+import sonia.scm.repository.RevisionNotFoundException;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.StreamingOutput;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class BrowserStreamingOutput implements StreamingOutput
+{
+
+  /** the logger for BrowserStreamingOutput */
+  private static final Logger logger =
+    LoggerFactory.getLogger(BrowserStreamingOutput.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param browser
+   * @param revision
+   * @param path
+   */
+  public BrowserStreamingOutput(RepositoryBrowser browser, String revision,
+                                String path)
+  {
+    this.browser = browser;
+    this.revision = revision;
+    this.path = path;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param output
+   *
+   * @throws IOException
+   * @throws WebApplicationException
+   */
+  @Override
+  public void write(OutputStream output)
+          throws IOException, WebApplicationException
+  {
+    try
+    {
+      browser.getContent(revision, path, output);
+    }
+    catch (PathNotFoundException ex)
+    {
+      if (logger.isWarnEnabled())
+      {
+        logger.warn("could not find path {}", ex.getPath());
+      }
+
+      throw new WebApplicationException(Response.Status.NOT_FOUND);
+    }
+    catch (RevisionNotFoundException ex)
+    {
+      if (logger.isWarnEnabled())
+      {
+        logger.warn("could not find revision {}", ex.getRevision());
+      }
+
+      throw new WebApplicationException(Response.Status.NOT_FOUND);
+    }
+    catch (RepositoryException ex)
+    {
+      logger.error("could not write content to page", ex);
+
+      throw new WebApplicationException(ex,
+                                        Response.Status.INTERNAL_SERVER_ERROR);
+    }
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private RepositoryBrowser browser;
+
+  /** Field description */
+  private String path;
+
+  /** Field description */
+  private String revision;
+}
diff --git a/scm-webapp/src/main/java/sonia/scm/api/rest/resources/DiffStreamingOutput.java b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/DiffStreamingOutput.java
new file mode 100644
index 0000000000..b21a2676c9
--- /dev/null
+++ b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/DiffStreamingOutput.java
@@ -0,0 +1,140 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.api.rest.resources;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.repository.DiffViewer;
+import sonia.scm.repository.PathNotFoundException;
+import sonia.scm.repository.RepositoryException;
+import sonia.scm.repository.RevisionNotFoundException;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.StreamingOutput;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class DiffStreamingOutput implements StreamingOutput
+{
+
+  /** the logger for DiffStreamingOutput */
+  private static final Logger logger =
+    LoggerFactory.getLogger(DiffStreamingOutput.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   *   Constructs ...
+   *  
+   *  
+   *   @param diffViewer
+   *   @param revision
+   *   @param path
+   */
+  public DiffStreamingOutput(DiffViewer diffViewer, String revision,
+                             String path)
+  {
+    this.diffViewer = diffViewer;
+    this.revision = revision;
+    this.path = path;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param output
+   *
+   * @throws IOException
+   * @throws WebApplicationException
+   */
+  @Override
+  public void write(OutputStream output)
+          throws IOException, WebApplicationException
+  {
+    try
+    {
+      diffViewer.getDiff(revision, path, output);
+    }
+    catch (PathNotFoundException ex)
+    {
+      if (logger.isWarnEnabled())
+      {
+        logger.warn("could not find path {}", ex.getPath());
+      }
+
+      throw new WebApplicationException(Response.Status.NOT_FOUND);
+    }
+    catch (RevisionNotFoundException ex)
+    {
+      if (logger.isWarnEnabled())
+      {
+        logger.warn("could not find revision {}", ex.getRevision());
+      }
+
+      throw new WebApplicationException(Response.Status.NOT_FOUND);
+    }
+    catch (RepositoryException ex)
+    {
+      logger.error("could not write content to page", ex);
+
+      throw new WebApplicationException(ex,
+                                        Response.Status.INTERNAL_SERVER_ERROR);
+    }
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private DiffViewer diffViewer;
+
+  /** Field description */
+  private String path;
+
+  /** Field description */
+  private String revision;
+}
diff --git a/scm-webapp/src/main/java/sonia/scm/api/rest/resources/RepositoryResource.java b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/RepositoryResource.java
index f8118eab97..50800ae533 100644
--- a/scm-webapp/src/main/java/sonia/scm/api/rest/resources/RepositoryResource.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/rest/resources/RepositoryResource.java
@@ -49,7 +49,7 @@ import sonia.scm.repository.BlameViewerUtil;
 import sonia.scm.repository.BrowserResult;
 import sonia.scm.repository.ChangesetPagingResult;
 import sonia.scm.repository.ChangesetViewerUtil;
-import sonia.scm.repository.PathNotFoundException;
+import sonia.scm.repository.DiffViewer;
 import sonia.scm.repository.Permission;
 import sonia.scm.repository.PermissionType;
 import sonia.scm.repository.PermissionUtil;
@@ -60,7 +60,6 @@ import sonia.scm.repository.RepositoryException;
 import sonia.scm.repository.RepositoryHandler;
 import sonia.scm.repository.RepositoryManager;
 import sonia.scm.repository.RepositoryNotFoundException;
-import sonia.scm.repository.RevisionNotFoundException;
 import sonia.scm.util.AssertUtil;
 import sonia.scm.util.HttpUtil;
 import sonia.scm.web.security.WebSecurityContext;
@@ -68,7 +67,6 @@ import sonia.scm.web.security.WebSecurityContext;
 //~--- JDK imports ------------------------------------------------------------
 
 import java.io.IOException;
-import java.io.OutputStream;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -79,7 +77,6 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
-import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.GenericEntity;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
@@ -340,6 +337,58 @@ public class RepositoryResource
     return response;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param id
+   * @param revision
+   * @param path
+   *
+   * @return
+   *
+   * @throws IOException
+   * @throws RepositoryException
+   */
+  @GET
+  @Path("{id}/diff")
+  public Response getDiff(@PathParam("id") String id,
+                          @QueryParam("revision") String revision,
+                          @QueryParam("path") String path)
+          throws RepositoryException, IOException
+  {
+    AssertUtil.assertIsNotEmpty(id);
+    AssertUtil.assertIsNotEmpty(revision);
+
+    Response response = null;
+
+    try
+    {
+      Repository repository = repositoryManager.get(id);
+
+      if (repository != null)
+      {
+        DiffViewer diffViewer = repositoryManager.getDiffViewer(repository);
+
+        if (diffViewer != null)
+        {
+          response = Response.ok(new DiffStreamingOutput(diffViewer, revision,
+                  path)).build();
+        }
+        else
+        {
+          response = Response.status(Response.Status.NOT_FOUND).build();
+        }
+      }
+    }
+    catch (RepositoryNotFoundException ex)
+    {
+      response = Response.status(Response.Status.NOT_FOUND).build();
+    }
+
+    return response;
+  }
+
   //~--- methods --------------------------------------------------------------
 
   /**
@@ -505,93 +554,6 @@ public class RepositoryResource
             PermissionType.OWNER);
   }
 
-  //~--- inner classes --------------------------------------------------------
-
-  /**
-   * Class description
-   *
-   *
-   * @version        Enter version here..., 11/06/18
-   * @author         Enter your name here...
-   */
-  private static class BrowserStreamingOutput implements StreamingOutput
-  {
-
-    /**
-     * Constructs ...
-     *
-     *
-     * @param browser
-     * @param revision
-     * @param path
-     */
-    public BrowserStreamingOutput(RepositoryBrowser browser, String revision,
-                                  String path)
-    {
-      this.browser = browser;
-      this.revision = revision;
-      this.path = path;
-    }
-
-    //~--- methods ------------------------------------------------------------
-
-    /**
-     * Method description
-     *
-     *
-     * @param output
-     *
-     * @throws IOException
-     * @throws WebApplicationException
-     */
-    @Override
-    public void write(OutputStream output)
-            throws IOException, WebApplicationException
-    {
-      try
-      {
-        browser.getContent(revision, path, output);
-      }
-      catch (PathNotFoundException ex)
-      {
-        if (logger.isWarnEnabled())
-        {
-          logger.warn("could not find path {}", ex.getPath());
-        }
-
-        throw new WebApplicationException(Response.Status.NOT_FOUND);
-      }
-      catch (RevisionNotFoundException ex)
-      {
-        if (logger.isWarnEnabled())
-        {
-          logger.warn("could not find revision {}", ex.getRevision());
-        }
-
-        throw new WebApplicationException(Response.Status.NOT_FOUND);
-      }
-      catch (RepositoryException ex)
-      {
-        logger.error("could not write content to page", ex);
-
-        throw new WebApplicationException(
-            ex, Response.Status.INTERNAL_SERVER_ERROR);
-      }
-    }
-
-    //~--- fields -------------------------------------------------------------
-
-    /** Field description */
-    private RepositoryBrowser browser;
-
-    /** Field description */
-    private String path;
-
-    /** Field description */
-    private String revision;
-  }
-
-
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */