diff --git a/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs b/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs
index b942f78..98ddc72 100644
--- a/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs	
+++ b/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs	
@@ -10,11 +10,13 @@
 * lock it up again.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Your API key here
+
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     using (var decryptRequest = new HttpRequestMessage(HttpMethod.Post, "decrypted-pdf"))
     {
-        decryptRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
+        decryptRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
         decryptRequest.Headers.Accept.Add(new("application/json"));
         var decryptMultipartContent = new MultipartFormDataContent();
 
@@ -41,7 +43,7 @@
 
         using (var addImageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-image"))
         {
-            addImageRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
+            addImageRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
             addImageRequest.Headers.Accept.Add(new("application/json"));
             var addImageMultipartContent = new MultipartFormDataContent();
 
@@ -74,7 +76,7 @@
 
             using (var encryptRequest = new HttpRequestMessage(HttpMethod.Post, "encrypted-pdf"))
             {
-                encryptRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
+                encryptRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
                 encryptRequest.Headers.Accept.Add(new("application/json"));
                 var multipartContent = new MultipartFormDataContent();
 
diff --git a/DotNET/Complex Flow Examples/merge-different-file-types.cs b/DotNET/Complex Flow Examples/merge-different-file-types.cs
index 21cb69a..f229659 100644
--- a/DotNET/Complex Flow Examples/merge-different-file-types.cs	
+++ b/DotNET/Complex Flow Examples/merge-different-file-types.cs	
@@ -13,11 +13,13 @@
 * that the /pdf route takes as inputs.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Your API key here
+
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     using (var imageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf"))
     {
-        imageRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+        imageRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
         imageRequest.Headers.Accept.Add(new("application/json"));
         var imageMultipartContent = new MultipartFormDataContent();
 
@@ -38,7 +40,7 @@
 
         using (var powerpointRequest = new HttpRequestMessage(HttpMethod.Post, "pdf"))
         {
-            powerpointRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+            powerpointRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
             powerpointRequest.Headers.Accept.Add(new("application/json"));
             var powerpointMultipartContent = new MultipartFormDataContent();
 
@@ -59,7 +61,7 @@
 
             using (var request = new HttpRequestMessage(HttpMethod.Post, "merged-pdf"))
             {
-                request.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
+                request.Headers.TryAddWithoutValidation("Api-Key", apiKey);
                 request.Headers.Accept.Add(new("application/json"));
                 var multipartContent = new MultipartFormDataContent();
 
diff --git a/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs b/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs
index e44b715..5f0be31 100644
--- a/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs	
+++ b/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs	
@@ -11,11 +11,13 @@
 * file may be attached and wrapped into the PDF/A conversion.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Your API key here
+
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     using (var attachRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-attachment"))
     {
-        attachRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");  // Your API key here
+        attachRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
         attachRequest.Headers.Accept.Add(new("application/json"));
         var attachMultipartContent = new MultipartFormDataContent();
 
@@ -27,7 +29,7 @@
         var byteArray2 = File.ReadAllBytes("/path/to/file.xml");
         var byteAryContent2 = new ByteArrayContent(byteArray2);
         attachMultipartContent.Add(byteAryContent2, "file_to_attach", "file_name.xml");
-        byteAryContent2.Headers.TryAddWithoutValidation("Content-Type", "application/xml"); // Update content type
+        byteAryContent2.Headers.TryAddWithoutValidation("Content-Type", "application/xml");
 
         attachRequest.Content = attachMultipartContent;
         var attachResponse = await httpClient.SendAsync(attachRequest);
@@ -41,7 +43,7 @@
 
         using (var request = new HttpRequestMessage(HttpMethod.Post, "pdfa"))
         {
-            request.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+            request.Headers.TryAddWithoutValidation("Api-Key", apiKey);
             request.Headers.Accept.Add(new("application/json"));
             var multipartContent = new MultipartFormDataContent();
 
diff --git a/DotNET/Complex Flow Examples/preserve-word-document.cs b/DotNET/Complex Flow Examples/preserve-word-document.cs
index f79e87e..d10a11a 100644
--- a/DotNET/Complex Flow Examples/preserve-word-document.cs	
+++ b/DotNET/Complex Flow Examples/preserve-word-document.cs	
@@ -8,11 +8,13 @@
 * and convert it to the PDF/A format for long-term storage.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Your API key here
+
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     using (var pdfRequest = new HttpRequestMessage(HttpMethod.Post, "pdf"))
     {
-        pdfRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+        pdfRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
         pdfRequest.Headers.Accept.Add(new("application/json"));
         var pdfMultipartContent = new MultipartFormDataContent();
 
@@ -33,7 +35,7 @@
 
         using (var request = new HttpRequestMessage(HttpMethod.Post, "pdfa"))
         {
-            request.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+            request.Headers.TryAddWithoutValidation("Api-Key", apiKey);
             request.Headers.Accept.Add(new("application/json"));
             var multipartContent = new MultipartFormDataContent();
 
diff --git a/DotNET/Complex Flow Examples/protected-watermark.cs b/DotNET/Complex Flow Examples/protected-watermark.cs
index 65c9f2d..855fd11 100644
--- a/DotNET/Complex Flow Examples/protected-watermark.cs	
+++ b/DotNET/Complex Flow Examples/protected-watermark.cs	
@@ -9,11 +9,13 @@
 * and then /restricted-pdf to lock the watermark in.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Your API key here
+
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     using (var watermarkRequest = new HttpRequestMessage(HttpMethod.Post, "watermarked-pdf"))
     {
-        watermarkRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+        watermarkRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
         watermarkRequest.Headers.Accept.Add(new("application/json"));
         var watermarkMultipartContent = new MultipartFormDataContent();
 
@@ -37,7 +39,7 @@
 
         using (var restrictRequest = new HttpRequestMessage(HttpMethod.Post, "restricted-pdf"))
         {
-            restrictRequest.Headers.TryAddWithoutValidation("Api-Key", "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); // Your API key here
+            restrictRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
             restrictRequest.Headers.Accept.Add(new("application/json"));
             var restrictMultipartContent = new MultipartFormDataContent();
 
diff --git a/JavaScript/Complex Flow Examples/decrypt-add-reencrypt.js b/JavaScript/Complex Flow Examples/decrypt-add-reencrypt.js
index d54145b..b77fc9b 100644
--- a/JavaScript/Complex Flow Examples/decrypt-add-reencrypt.js	
+++ b/JavaScript/Complex Flow Examples/decrypt-add-reencrypt.js	
@@ -11,6 +11,8 @@ var fs = require("fs");
  * lock it up again.
  */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Replace with your API key
+
 var decryptRequestData = new FormData();
 decryptRequestData.append("file", fs.createReadStream("/path/to/file.pdf"));
 decryptRequestData.append("current_open_password", "current_example_pw");
@@ -20,7 +22,7 @@ var decryptConfig = {
   maxBodyLength: Infinity,
   url: "https://api.pdfrest.com/decrypted-pdf",
   headers: {
-    "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+    "Api-Key": apiKey,
     ...decryptRequestData.getHeaders(),
   },
   data: decryptRequestData,
@@ -41,7 +43,7 @@ axios(decryptConfig)
       maxBodyLength: Infinity,
       url: "https://api.pdfrest.com/pdf-with-added-image",
       headers: {
-        "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+        "Api-Key": apiKey,
         ...data.getHeaders(),
       },
       data: data,
@@ -58,7 +60,7 @@ axios(decryptConfig)
           maxBodyLength: Infinity,
           url: "https://api.pdfrest.com/encrypted-pdf",
           headers: {
-            "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+            "Api-Key": apiKey,
             ...data.getHeaders(),
           },
           data: data,
diff --git a/JavaScript/Complex Flow Examples/merge-different-file-types.js b/JavaScript/Complex Flow Examples/merge-different-file-types.js
index bd963ed..6c066cc 100644
--- a/JavaScript/Complex Flow Examples/merge-different-file-types.js	
+++ b/JavaScript/Complex Flow Examples/merge-different-file-types.js	
@@ -14,6 +14,8 @@ First, we will upload an image file to the /pdf route and capture the output ID.
 * that the /pdf route takes as inputs.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Replace with your API key
+
 var imageData = new FormData();
 imageData.append("file", fs.createReadStream("/path/to/image.png"));
 
@@ -22,7 +24,7 @@ var imageConfig = {
   maxBodyLength: Infinity,
   url: "https://api.pdfrest.com/pdf",
   headers: {
-    "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+    "Api-Key": apiKey,
     ...imageData.getHeaders(),
   },
   data: imageData,
@@ -40,7 +42,7 @@ axios(imageConfig)
       maxBodyLength: Infinity,
       url: "https://api.pdfrest.com/pdf",
       headers: {
-        "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+        "Api-Key": apiKey,
         ...pptData.getHeaders(),
       },
       data: pptData,
@@ -64,7 +66,7 @@ axios(imageConfig)
           maxBodyLength: Infinity,
           url: "https://api.pdfrest.com/merged-pdf",
           headers: {
-            "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+            "Api-Key": apiKey,
             ...mergeData.getHeaders(),
           },
           data: mergeData,
diff --git a/JavaScript/Complex Flow Examples/pdfa-3b-with-attachment.js b/JavaScript/Complex Flow Examples/pdfa-3b-with-attachment.js
index 603c71e..fc06fe4 100644
--- a/JavaScript/Complex Flow Examples/pdfa-3b-with-attachment.js	
+++ b/JavaScript/Complex Flow Examples/pdfa-3b-with-attachment.js	
@@ -12,6 +12,8 @@ var fs = require("fs");
 * file may be attached and wrapped into the PDF/A conversion.
 */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Replace with your API key
+
 var attachData = new FormData();
 attachData.append("file", fs.createReadStream("/path/to/file.pdf"));
 attachData.append(
@@ -25,7 +27,7 @@ var attachConfig = {
   maxBodyLength: Infinity,
   url: "https://api.pdfrest.com/pdf-with-added-attachment",
   headers: {
-    "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+    "Api-Key": apiKey,
     ...attachData.getHeaders(),
   },
   data: attachData,
@@ -45,7 +47,7 @@ axios(attachConfig)
       maxBodyLength: Infinity,
       url: "https://api.pdfrest.com/pdfa",
       headers: {
-        "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+        "Api-Key": apiKey,
         ...pdfaData.getHeaders(),
       },
       data: pdfaData,
diff --git a/JavaScript/Complex Flow Examples/preserve-word-document.js b/JavaScript/Complex Flow Examples/preserve-word-document.js
index 23304d9..39ac600 100644
--- a/JavaScript/Complex Flow Examples/preserve-word-document.js	
+++ b/JavaScript/Complex Flow Examples/preserve-word-document.js	
@@ -9,6 +9,8 @@ var fs = require("fs");
  * and convert it to the PDF/A format for long-term storage.
  */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Replace with your API key
+
 var pdfData = new FormData();
 pdfData.append("file", fs.createReadStream("/path/to/word.doc"));
 
@@ -17,7 +19,7 @@ var pdfConfig = {
   maxBodyLength: Infinity,
   url: "https://api.pdfrest.com/pdf",
   headers: {
-    "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+    "Api-Key": apiKey,
     ...pdfData.getHeaders(),
   },
   data: pdfData,
@@ -37,7 +39,7 @@ axios(pdfConfig)
       maxBodyLength: Infinity,
       url: "https://api.pdfrest.com/pdfa",
       headers: {
-        "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+        "Api-Key": apiKey,
         ...pdfaData.getHeaders(),
       },
       data: pdfaData,
diff --git a/JavaScript/Complex Flow Examples/protected-watermark.js b/JavaScript/Complex Flow Examples/protected-watermark.js
index e38eeef..41bcef2 100644
--- a/JavaScript/Complex Flow Examples/protected-watermark.js	
+++ b/JavaScript/Complex Flow Examples/protected-watermark.js	
@@ -9,6 +9,8 @@ var fs = require("fs");
  * and then /restricted-pdf to lock the watermark in.
  */
 
+var apiKey = "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // Replace with your API key
+
 var watermarkData = new FormData();
 watermarkData.append("file", fs.createReadStream("/path/to/file.pdf"));
 watermarkData.append("watermark_text", "Watermarked");
@@ -18,7 +20,7 @@ var watermarkConfig = {
   maxBodyLength: Infinity,
   url: "https://api.pdfrest.com/watermarked-pdf",
   headers: {
-    "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+    "Api-Key": apiKey,
     ...watermarkData.getHeaders(),
   },
   data: watermarkData,
@@ -40,7 +42,7 @@ axios(watermarkConfig)
       maxBodyLength: Infinity,
       url: "https://api.pdfrest.com/restricted-pdf",
       headers: {
-        "Api-Key": "xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", // Replace with your API key
+        "Api-Key": apiKey,
         ...data.getHeaders(),
       },
       data: data,
diff --git a/Python/Complex Flow Examples/decrypt-add-reencrypt.py b/Python/Complex Flow Examples/decrypt-add-reencrypt.py
index 315a508..324ceb1 100644
--- a/Python/Complex Flow Examples/decrypt-add-reencrypt.py	
+++ b/Python/Complex Flow Examples/decrypt-add-reencrypt.py	
@@ -10,6 +10,8 @@
 # and then sending the output with the new image through /encrypted-pdf to
 # lock it up again.
 
+api_key = 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+
 decrypted_pdf_endpoint_url = 'https://api.pdfrest.com/decrypted-pdf'
 
 mp_encoder_decryptedPdf = MultipartEncoder(
@@ -22,7 +24,7 @@
 decrypt_headers = {
     'Accept': 'application/json',
     'Content-Type': mp_encoder_decryptedPdf.content_type,
-    'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+    'Api-Key': api_key
 }
 
 print("Sending POST request to decrypted-pdf endpoint...")
@@ -50,7 +52,7 @@
     add_image_headers = {
         'Accept': 'application/json',
         'Content-Type': mp_encoder_pdfWithAddedImage.content_type,
-        'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+        'Api-Key': api_key
     }
 
     print("Sending POST request to pdf-with-added-image endpoint...")
@@ -75,7 +77,7 @@
         encrypt_headers = {
             'Accept': 'application/json',
             'Content-Type': mp_encoder_encryptedPdf.content_type,
-            'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+            'Api-Key': api_key
         }
 
         print("Sending POST request to encrypted-pdf endpoint...")
diff --git a/Python/Complex Flow Examples/merge-different-file-types.py b/Python/Complex Flow Examples/merge-different-file-types.py
index 5cf773d..1dd98f2 100644
--- a/Python/Complex Flow Examples/merge-different-file-types.py	
+++ b/Python/Complex Flow Examples/merge-different-file-types.py	
@@ -14,6 +14,8 @@
 # this sample could be easily used to convert and combine any two file types
 # that the /pdf route takes as inputs.
 
+api_key = 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+
 pdf_endpoint_url = 'https://api.pdfrest.com/pdf'
 mp_encoder_image_pdf = MultipartEncoder(
     fields={
@@ -24,7 +26,7 @@
 image_headers = {
     'Accept': 'application/json',
     'Content-Type': mp_encoder_image_pdf.content_type,
-    'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+    'Api-Key': api_key
 }
 
 print("Sending POST request to pdf endpoint...")
@@ -49,7 +51,7 @@
     ppt_headers = {
         'Accept': 'application/json',
         'Content-Type': mp_encoder_ppt_pdf.content_type,
-        'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+        'Api-Key': api_key
     }
 
     print("Sending POST request to pdf endpoint...")
@@ -73,7 +75,7 @@
         merge_headers = {
             'Accept': 'application/json',
             'Content-Type': mp_encoder_merge.content_type,
-            'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+            'Api-Key': api_key
         }
 
         print("Sending POST request to merged-pdf endpoint...")
diff --git a/Python/Complex Flow Examples/pdfa-3b-with-attachment.py b/Python/Complex Flow Examples/pdfa-3b-with-attachment.py
index 5d7dd4f..c9dcc6c 100644
--- a/Python/Complex Flow Examples/pdfa-3b-with-attachment.py	
+++ b/Python/Complex Flow Examples/pdfa-3b-with-attachment.py	
@@ -11,6 +11,8 @@
 # Note that there is nothing special about attaching an xml file, and any appropriate
 # file may be attached and wrapped into the PDF/A conversion.
 
+api_key = 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+
 pdf_with_added_attachment_endpoint_url = 'https://api.pdfrest.com/pdf-with-added-attachment'
 
 mp_encoder_pdfWithAddedAttachment = MultipartEncoder(
@@ -24,7 +26,7 @@
 attachment_headers = {
     'Accept': 'application/json',
     'Content-Type': mp_encoder_pdfWithAddedAttachment.content_type,
-    'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+    'Api-Key': api_key
 }
 
 print("Sending POST request to pdf-with-added-attachment endpoint...")
@@ -50,7 +52,7 @@
     headers = {
         'Accept': 'application/json',
         'Content-Type': mp_encoder_pdfa.content_type,
-        'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+        'Api-Key': api_key
     }
 
     print("Sending POST request to pdfa endpoint...")
diff --git a/Python/Complex Flow Examples/preserve-word-document.py b/Python/Complex Flow Examples/preserve-word-document.py
index 0796d0a..541af59 100644
--- a/Python/Complex Flow Examples/preserve-word-document.py	
+++ b/Python/Complex Flow Examples/preserve-word-document.py	
@@ -8,6 +8,7 @@
 # a PDF with a call to the /pdf route. Then, we will take that converted PDF
 # and convert it to the PDF/A format for long-term storage.
 
+api_key = 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
 
 pdf_endpoint_url = 'https://api.pdfrest.com/pdf'
 
@@ -20,7 +21,7 @@
 pdf_headers = {
     'Accept': 'application/json',
     'Content-Type': mp_encoder_pdf.content_type,
-    'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+    'Api-Key': api_key
 }
 
 print("Sending POST request to pdf endpoint...")
@@ -47,7 +48,7 @@
     headers = {
         'Accept': 'application/json',
         'Content-Type': mp_encoder_pdfa.content_type,
-        'Api-Key': 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+        'Api-Key': api_key
     }
 
     print("Sending POST request to pdfa endpoint...")
diff --git a/Python/Complex Flow Examples/protected-watermark.py b/Python/Complex Flow Examples/protected-watermark.py
index 0291dfe..fd058b5 100644
--- a/Python/Complex Flow Examples/protected-watermark.py	
+++ b/Python/Complex Flow Examples/protected-watermark.py	
@@ -9,6 +9,8 @@
 # We will be running the input file through /watermarked-pdf to apply the watermark
 # and then /restricted-pdf to lock the watermark in.
 
+api_key = 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+
 watermarked_pdf_endpoint_url = 'https://api.pdfrest.com/watermarked-pdf'
 
 mp_encoder_watermarkedPDF = MultipartEncoder(
@@ -21,7 +23,7 @@
 watermark_headers = {
     'Accept': 'application/json',
     'Content-Type': mp_encoder_watermarkedPDF.content_type,
-    'Api-Key': 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+    'Api-Key': api_key
 }
 
 print("Sending POST request to watermarked-pdf endpoint...")
@@ -50,7 +52,7 @@
     restrict_headers = {
         'Accept': 'application/json',
         'Content-Type': mp_encoder_restrictedPdf.content_type,
-        'Api-Key': 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' # place your api key here
+        'Api-Key': api_key
     }
 
     print("Sending POST request to restricted-pdf endpoint...")
diff --git a/cURL/Complex Flow Examples/decrypt-add-reencrypt.sh b/cURL/Complex Flow Examples/decrypt-add-reencrypt.sh
index f48684a..0a69f0c 100755
--- a/cURL/Complex Flow Examples/decrypt-add-reencrypt.sh	
+++ b/cURL/Complex Flow Examples/decrypt-add-reencrypt.sh	
@@ -8,10 +8,12 @@
 # and then sending the output with the new image through /encrypted-pdf to
 # lock it up again.
 
+API_KEY="xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" # place your api key here
+
 DECRYPTED_ID=$(curl -X POST "https://api.pdfrest.com/decrypted-pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/file.pdf" \
   -F "output=example_out" \
   -F "current_open_password=password" \
@@ -21,7 +23,7 @@ DECRYPTED_ID=$(curl -X POST "https://api.pdfrest.com/decrypted-pdf" \
 ADDED_IMAGE_ID=$(curl -X POST "https://api.pdfrest.com/pdf-with-added-image" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$DECRYPTED_ID" \
   -F "image_file=@/path/to/image.png" \
   -F "output=example_out" \
@@ -34,7 +36,7 @@ ADDED_IMAGE_ID=$(curl -X POST "https://api.pdfrest.com/pdf-with-added-image" \
 curl -X POST "https://api.pdfrest.com/encrypted-pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$ADDED_IMAGE_ID" \
   -F "output=example_out" \
   -F "new_open_password=password"
diff --git a/cURL/Complex Flow Examples/merge-different-file-types.sh b/cURL/Complex Flow Examples/merge-different-file-types.sh
index f68633c..cf62cf6 100755
--- a/cURL/Complex Flow Examples/merge-different-file-types.sh	
+++ b/cURL/Complex Flow Examples/merge-different-file-types.sh	
@@ -11,10 +11,12 @@
 # this sample could be easily used to convert and combine any two file types
 # that the /pdf route takes as inputs.
 
+API_KEY="xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" # place your api key here
+
 IMAGE_ID=$(curl -X POST "https://api.pdfrest.com/pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/file.png" \
   -F "output=example_out" \
   | jq -r '.outputId')
@@ -23,7 +25,7 @@ IMAGE_ID=$(curl -X POST "https://api.pdfrest.com/pdf" \
 PPT_ID=$(curl -X POST "https://api.pdfrest.com/pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/powerpoint.ppt" \
   -F "output=example_out" \
   | jq -r '.outputId')
@@ -32,7 +34,7 @@ PPT_ID=$(curl -X POST "https://api.pdfrest.com/pdf" \
 curl -X POST "https://api.pdfrest.com/merged-pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$IMAGE_ID" \
   -F "pages[]=all" -F "type[]=id" \
   -F "id=$PPT_ID" \
diff --git a/cURL/Complex Flow Examples/pdfa-3b-with-attachment.sh b/cURL/Complex Flow Examples/pdfa-3b-with-attachment.sh
index 00482a6..11c9ccf 100755
--- a/cURL/Complex Flow Examples/pdfa-3b-with-attachment.sh	
+++ b/cURL/Complex Flow Examples/pdfa-3b-with-attachment.sh	
@@ -9,10 +9,12 @@
 # Note that there is nothing special about attaching an xml file, and any appropriate
 # file may be attached and wrapped into the PDF/A conversion.
 
+API_KEY="xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" # place your api key here
+
 ATTACHED_ID=$(curl -X POST "https://api.pdfrest.com/pdf-with-added-attachment" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/file.pdf" \
   -F "file_to_attach=@/path/to/file_to_attach.xml" \
   -F "output=example_out" \
@@ -21,7 +23,7 @@ ATTACHED_ID=$(curl -X POST "https://api.pdfrest.com/pdf-with-added-attachment" \
 curl -X POST "https://api.pdfrest.com/pdfa" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$ATTACHED_ID" \
   -F "output=example_out" \
   -F "output_type=PDF/A-3b" \
diff --git a/cURL/Complex Flow Examples/preserve-word-document.sh b/cURL/Complex Flow Examples/preserve-word-document.sh
index e25b048..801e9d6 100755
--- a/cURL/Complex Flow Examples/preserve-word-document.sh	
+++ b/cURL/Complex Flow Examples/preserve-word-document.sh	
@@ -6,17 +6,19 @@
 # a PDF with a call to the /pdf route. Then, we will take that converted PDF
 # and convert it to the PDF/A format for long-term storage.
 
+API_KEY="xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" # place your api key here
+
 PDF_ID=$(curl -X POST "https://api.pdfrest.com/pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/file.doc" \
   | jq -r '.outputId')
 
 curl -X POST "https://api.pdfrest.com/pdfa" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$PDF_ID" \
   -F "output=example_out" \
   -F "output_type=PDF/A-3b" \
diff --git a/cURL/Complex Flow Examples/protected-watermark.sh b/cURL/Complex Flow Examples/protected-watermark.sh
index f5d5e8b..f115d79 100755
--- a/cURL/Complex Flow Examples/protected-watermark.sh	
+++ b/cURL/Complex Flow Examples/protected-watermark.sh	
@@ -6,10 +6,13 @@
 # We will be running the input file through /watermarked-pdf to apply the watermark
 # and then /restricted-pdf to lock the watermark in.
 
+
+API_KEY="xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" # place your api key here
+
 WATERMARKED_ID=$(curl -X POST "https://api.pdfrest.com/watermarked-pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "file=@/path/to/file.pdf" \
   -F "watermark_text=watermark" \
   -F "output=example_out" \
@@ -18,7 +21,7 @@ WATERMARKED_ID=$(curl -X POST "https://api.pdfrest.com/watermarked-pdf" \
 curl -X POST "https://api.pdfrest.com/restricted-pdf" \
   -H "Accept: application/json" \
   -H "Content-Type: multipart/form-data" \
-  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
+  -H "Api-Key: $API_KEY" \
   -F "id=$WATERMARKED_ID" \
   -F "output=example_out" \
   -F "restrictions[]=edit_annotations" \