diff --git a/chrome/content/zotero/xpcom/utilities_translate.js b/chrome/content/zotero/xpcom/utilities_translate.js
index bc49373b3c..577bfa87c9 100644
--- a/chrome/content/zotero/xpcom/utilities_translate.js
+++ b/chrome/content/zotero/xpcom/utilities_translate.js
@@ -308,9 +308,11 @@ Zotero.Utilities.Translate.prototype.processDocuments = async function (urls, pr
 * @param {Function} done Callback to be executed after all documents have been loaded
 * @param {String} responseCharset Character set to force on the response
 * @param {Object} requestHeaders HTTP headers to include with request
+* @param {Number[]} successCodes - HTTP status codes that are considered
+*     successful, or FALSE to allow all
 * @return {Boolean} True if the request was sent, or false if the browser is offline
 */
-Zotero.Utilities.Translate.prototype.doGet = function(urls, processor, done, responseCharset, requestHeaders) {
+Zotero.Utilities.Translate.prototype.doGet = function(urls, processor, done, responseCharset, requestHeaders, successCodes) {
 	var callAgain = false,
 		me = this,
 		translate = this._translate;
@@ -326,7 +328,16 @@ Zotero.Utilities.Translate.prototype.doGet = function(urls, processor, done, res
 	
 	translate.incrementAsyncProcesses("Zotero.Utilities.Translate#doGet");
 	var xmlhttp = Zotero.HTTP.doGet(url, function(xmlhttp) {
-		if (xmlhttp.status >= 400 || !xmlhttp.status) {
+		if (successCodes) {
+			var success = successCodes.includes(xmlhttp.status);
+		}
+		else if (successCodes === false) {
+			var success = true;
+		}
+		else {
+			var success = xmlhttp.status >= 200 && xmlhttp.status < 400;
+		}
+		if (!success) {
 			translate.complete(false, `HTTP GET ${url} failed with status code ${xmlhttp.status}`);
 			return;
 		}
@@ -354,13 +365,22 @@ Zotero.Utilities.Translate.prototype.doGet = function(urls, processor, done, res
  * Already documented in Zotero.HTTP
  * @ignore
  */
-Zotero.Utilities.Translate.prototype.doPost = function(url, body, onDone, headers, responseCharset) {
+Zotero.Utilities.Translate.prototype.doPost = function(url, body, onDone, headers, responseCharset, successCodes) {
 	var translate = this._translate;
 	url = translate.resolveURL(url);
 	
 	translate.incrementAsyncProcesses("Zotero.Utilities.Translate#doPost");
 	var xmlhttp = Zotero.HTTP.doPost(url, body, function(xmlhttp) {
-		if (xmlhttp.status >= 400 || !xmlhttp.status) {
+		if (successCodes) {
+			var success = successCodes.includes(xmlhttp.status);
+		}
+		else if (successCodes === false) {
+			var success = true;
+		}
+		else {
+			var success = xmlhttp.status >= 200 && xmlhttp.status < 400;
+		}
+		if (!success) {
 			translate.complete(false, `HTTP POST ${url} failed with status code ${xmlhttp.status}`);
 			return;
 		}