diff --git a/src/templates/rawkeyimgs.html b/src/templates/rawkeyimgs.html
index fef4d67..3b346e6 100644
--- a/src/templates/rawkeyimgs.html
+++ b/src/templates/rawkeyimgs.html
@@ -29,6 +29,8 @@
             <textarea name="rawkeyimgsdata" rows="20" cols="80"></textarea><br/><br/>
             Viewkey (<i>key image file data is encoded using your viewkey. Thus is needed for decryption</i>)
             <br/>
+            Note: data and viewkey are sent to the server, as the calculations are done on the server side
+            <br/>
             <input type="text"  name="viewkey" size="80">
             <br/>
             <input type="submit" name="action" value="check">
diff --git a/src/templates/rawoutputkeys.html b/src/templates/rawoutputkeys.html
index 5b07489..5f1a4d2 100644
--- a/src/templates/rawoutputkeys.html
+++ b/src/templates/rawoutputkeys.html
@@ -29,6 +29,8 @@
             <textarea name="rawoutputkeysdata" rows="20" cols="80"></textarea><br/><br/>
             Viewkey (<i>output keys file data is encoded using your viewkey. Thus is needed for decryption</i>)
             <br/>
+            Note: data and viewkey are sent to the server, as the calculations are done on the server side
+            <br/>
             <input type="text"  name="viewkey" size="80">
             <br/>
             <input type="submit" name="action" value="check">
diff --git a/src/templates/rawtx.html b/src/templates/rawtx.html
index 2f483c5..75b0052 100644
--- a/src/templates/rawtx.html
+++ b/src/templates/rawtx.html
@@ -29,6 +29,8 @@
             (In Windows, can get base64 signed raw tx data: <i>certutil.exe -encode -f signed_monero_tx encoded.txt & type "encoded.txt" | clip</i>)<br/>
             <textarea name="rawtxdata" rows="20" cols="80"></textarea>
             <br/>
+            Note: data is sent to the server, as the calculations are done on the server side
+            <br/>
             <input type="submit" name="action" value="check">
             &nbsp;  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  &nbsp; &nbsp; &nbsp; &nbsp;
             &nbsp;  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  &nbsp; &nbsp; &nbsp; &nbsp;