diff --git a/modules/instagram.js b/modules/instagram.js
index b77780d..c63e8a9 100644
--- a/modules/instagram.js
+++ b/modules/instagram.js
@@ -5,6 +5,7 @@ zeeschuimer.register_module(
         let domain = source_platform_url.split("/")[2].toLowerCase().replace(/^www\./, '');
 
         if (!["instagram.com"].includes(domain)) {
+            console.log('ignoring non-instagram url ' + source_url);
             return [];
         }
 
diff --git a/popup/interface.html b/popup/interface.html
index ad4777f..276373a 100644
--- a/popup/interface.html
+++ b/popup/interface.html
@@ -219,7 +219,7 @@
             margin-right: 0.25em;
         }
 
-        input:not([type=checkbox]):not([type=radio]), button {
+        input:not([type=checkbox]):not([type=radio]), button, select {
             background: var(--neutral-contrast-alt);
             color: var(--accent);
             border: 2px solid var(--neutral-contrast);
@@ -265,11 +265,15 @@
             content: ' \2022';
         }
 
-        .fourcat-url-container, .zeeschuimer-master-switch, .import-container {
+        .fourcat-url-container, .zeeschuimer-master-switch, .import-container, .fourcat-pseudonymisation-container {
             text-align: center;
             margin-bottom: 0.5em;
         }
 
+        .fourcat-pseudonymisation-container select {
+            max-width: 15em;
+        }
+
         #upload-status {
             text-align: center;
         }
@@ -411,6 +415,18 @@ <h2><span>Connect to 4CAT</span></h2>
                       title="The URL of the 4CAT server to upload datasets to. Make sure you're logged in to this URL with this browser.">?</span>
             </label>
         </div>
+        <div class="fourcat-pseudonymisation-container">
+            <label>
+                <span>Pseudonymise data in 4CAT:</span>
+                <select id="fourcat-pseudonymisation">
+                    <option value="anonymise">Anonymise - Replace author information with 'REDACTED'</option>
+                    <option value="pseudonymise">Pseudonymise - Replace author information with hashed values</option>
+                    <option value="none">Leave author information as-is</option>
+                </select>
+                <span class="tooltippable"
+                        title="4CAT can pseudonymise the data after importing it in a number of ways. Note that this happens AFTER uploading and non-pseudonymised data will always be sent to the 4CAT server first. 4CAT versions prior to 1.43 do not support this and will require you to manually pseudonymise after uploading.">?</span>
+            </label>
+        </div>
         <p id="upload-status"></p>
     </section>
     <section>
diff --git a/popup/interface.js b/popup/interface.js
index c7180ee..a397c84 100644
--- a/popup/interface.js
+++ b/popup/interface.js
@@ -82,7 +82,7 @@ async function get_4cat_url(e) {
  * @returns {Promise<void>}
  */
 async function set_4cat_url(e) {
-    if(e !== true && !e.target.matches('#fourcat-url')) {
+    if(e !== true && !e.target.matches('#fourcat-url') && !e.target.matches('#fourcat-pseudonymisation')) {
         return;
     }
 
@@ -105,6 +105,8 @@ async function set_4cat_url(e) {
         }
     }
 
+    await background.browser.storage.local.set({'4cat-pseudonymise': document.querySelector('#fourcat-pseudonymisation').value});
+
     have_4cat = (url && url.length > 0);
 }
 
@@ -314,8 +316,10 @@ async function button_handler(event) {
         xhr = new XMLHttpRequest();
         xhr.aborted = false;
         let upload_url = await get_4cat_url();
+        let pseudonymise_bit = document.querySelector('#fourcat-pseudonymisation').value
+        pseudonymise_bit = pseudonymise_bit !== 'none' ? '?pseudonymise=' + pseudonymise_bit : ''
 
-        xhr.open("POST", upload_url + "/api/import-dataset/", true);
+        xhr.open("POST", upload_url + "/api/import-dataset/" + pseudonymise_bit, true);
         xhr.setRequestHeader("X-Zeeschuimer-Platform", platform)
         xhr.onloadstart = function () {
             status.innerText = 'Starting upload...';
@@ -673,5 +677,9 @@ document.addEventListener('DOMContentLoaded', async function () {
     const fourcat_url = await background.browser.storage.local.get('4cat-url');
     document.querySelector('#fourcat-url').value = fourcat_url['4cat-url'] ? fourcat_url['4cat-url'] : '';
 
+    const pseudonymise = await background.browser.storage.local.get('4cat-pseudonymise');
+    console.log(pseudonymise);
+    document.querySelector('#fourcat-pseudonymisation').value = pseudonymise['4cat-pseudonymise'] ? pseudonymise['4cat-pseudonymise'] : 'none';
+
     browser.downloads.onChanged.addListener(downloadListener);
 });
\ No newline at end of file