diff --git a/README.md b/README.md
index ff4bd68..4a6532a 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,19 @@ You can activate AREPL directly by using control-shift-a or command-shift-a if o
 see [AREPL-backend](https://github.com/Almenon/AREPL-backend) for the npm package that executes the python code
 
 AREPL is also availible as a standalone [app](https://github.com/Almenon/AREPL)
+
+### Settings:
+
+AREPL offers the following customizable settings:
+
+// delay in ms before executing code after typing
+> "AREPL.delay": 300,
+
+// 70 fits in 1280 screen
+> "AREPL.max_string_length": 70,
+
+// when restart mode is active we add this to delay to delay longer
+> "AREPL.restartDelay": 300,
+
+// 2 shows x=1 and x=[1,2], provides option to expand deeply nested data like x=[[1]]
+> "AREPL.show_to_level": 2
\ No newline at end of file
diff --git a/package.json b/package.json
index b38f947..072a598 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,32 @@
   ],
   "main": "./out/src/extension",
   "contributes": {
+    "configuration": {
+      "type": "object",
+      "title": "AREPL configuration",
+      "properties": {
+        "AREPL.delay": {
+          "type": "number",
+          "default": 300,
+          "description": "delay in ms before executing code after typing"
+        },
+        "AREPL.restartDelay": {
+          "type": "number",
+          "default": 300,
+          "description": "when restart mode is active we add this to delay to delay longer"
+        },
+        "AREPL.show_to_level": {
+          "type": "number",
+          "default": 2,
+          "description": "2 shows x=1 and x=[1,2], provides option to expand deeply nested data like x=[[1]]"
+        },
+        "AREPL.max_string_length": {
+          "type": "number",
+          "default": 70,
+          "description": "70 fits in 1280 screen"
+        }
+      }
+    },
     "commands": [
       {
         "command": "extension.evalPythonInRealTime",
diff --git a/src/HTMLDocumentContentProvider.ts b/src/HTMLDocumentContentProvider.ts
index 699aa78..5f23361 100644
--- a/src/HTMLDocumentContentProvider.ts
+++ b/src/HTMLDocumentContentProvider.ts
@@ -22,11 +22,13 @@ export default class HtmlDocumentContentProvider implements vscode.TextDocumentC
     errorContainer = ''
     userVarContainer = `<div id="results"></div>`;
     printContainer = `<br><b>Print Output:</b><div id="print"></div>`;
+    settings:vscode.WorkspaceConfiguration;
 
     constructor(private context: vscode.ExtensionContext) {
         this._onDidChange = new vscode.EventEmitter<vscode.Uri>();
         this.css = `<link rel="stylesheet" type="text/css" href="${this.getMediaPath("pythonPreview.css")}">`
         this.jsonRendererScript = `<script src="${this.getMediaPath('jsonRenderer.js')}"></script>`
+        this.settings = vscode.workspace.getConfiguration('AREPL');
     }
 
     provideTextDocumentContent(uri: vscode.Uri): string {
@@ -90,8 +92,8 @@ export default class HtmlDocumentContentProvider implements vscode.TextDocumentC
         let jsonRendererCode = `<script>
                                     ${userVarsCode}
                                     let jsonRenderer = renderjson.set_icons('+', '-') // default icons look a bit wierd, overriding
-                                        .set_show_to_level(2) 
-                                        .set_max_string_length(150);
+                                        .set_show_to_level(${this.settings.get('show_to_level')}) 
+                                        .set_max_string_length(${this.settings.get('max_string_length')});
                                     document.getElementById("results").appendChild(jsonRenderer(userVars));
                                 </script>`
 
diff --git a/src/PreviewManager.ts b/src/PreviewManager.ts
index 29da2b8..6eb4bea 100644
--- a/src/PreviewManager.ts
+++ b/src/PreviewManager.ts
@@ -19,14 +19,16 @@ export default class PreviewManager {
         this.pythonEvaluator = new PythonEvaluator()
         this.pythonEditor = vscode.window.activeTextEditor.document;
 
+        const settings = vscode.workspace.getConfiguration('AREPL');
+
         vscode.workspace.registerTextDocumentContentProvider(HtmlDocumentContentProvider.scheme, this.pythonPreviewContentProvider);
 
         /////////////////////////////////////////////////////////
         //		python
         /////////////////////////////////////////////////////////
         let self:PreviewManager = this;
-        let debounce = 300;
-        let restartExtraDebounce = 300;
+        let debounce = settings.get<number>('delay');
+        let restartExtraDebounce = settings.get<number>('restartDelay');
 
         this.pythonEvaluator.startPython()
         this.pythonEvaluator.pyshell.childProcess.on('error', err => {