diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 440bc1a8..02baec0d 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -37,7 +37,11 @@ if (isset($_GET["pgsql"])) {
 			}
 
 			function quote($string) {
-				return "'" . pg_escape_string($this->_link, $string) . "'"; //! bytea
+				return "'" . pg_escape_string($this->_link, $string) . "'";
+			}
+
+			function quoteBinary($string) {
+				return "'" . pg_escape_bytea($this->_link, $string) . "'";
 			}
 
 			function select_db($database) {
@@ -147,6 +151,10 @@ if (isset($_GET["pgsql"])) {
 				return ($adminer->database() == $database);
 			}
 
+			function quoteBinary($s) {
+				return q($s);
+			}
+
 			function warnings() {
 				return ''; // not implemented in PDO_PgSQL as of PHP 7.2.1
 			}
@@ -188,6 +196,10 @@ if (isset($_GET["pgsql"])) {
 			);
 		}
 
+		function quoteBinary($s) {
+			return $this->_conn->quoteBinary($s);
+		}
+
 		function warnings() {
 			return $this->_conn->warnings();
 		}
diff --git a/adminer/include/driver.inc.php b/adminer/include/driver.inc.php
index 4a2ae222..6e35b4fa 100644
--- a/adminer/include/driver.inc.php
+++ b/adminer/include/driver.inc.php
@@ -123,6 +123,14 @@
 		return $idf;
 	}
 	
+	/** Quote binary string
+	* @param string
+	* @return string
+	*/
+	function quoteBinary($s) {
+		return q($s);
+	}
+	
 	/** Get warnings about the last command
 	* @return string HTML
 	*/
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 1576a21b..be2e92e1 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -1003,7 +1003,7 @@ function input($field, $value, $function) {
 * @return string or false to leave the original value
 */
 function process_input($field) {
-	global $adminer;
+	global $adminer, $driver;
 	$idf = bracket_escape($field["field"]);
 	$function = $_POST["function"][$idf];
 	$value = $_POST["fields"][$idf];
@@ -1041,7 +1041,7 @@ function process_input($field) {
 		if (!is_string($file)) {
 			return false; //! report errors
 		}
-		return q($file);
+		return $driver->quoteBinary($file);
 	}
 	return $adminer->processInput($field, $value, $function);
 }
diff --git a/changes.txt b/changes.txt
index 7cbe57c0..47e4c91c 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,6 +1,7 @@
 Adminer 4.6.1-dev:
 MySQL: Support non-utf8 charset in search in column
 MySQL: Support geometry in MySQL 8 (bug #574)
+PostgreSQL: Upload binary files to bytea fields
 PostgreSQL: Cast to string when searching using LIKE (bug #325)
 PostgreSQL: Don't treat interval type as number (bug #474)
 PostgreSQL: Fix condition for selecting no rows