diff --git a/CHANGELOG-WIP.md b/CHANGELOG-WIP.md
index 8d907e8b0bb..98c35beae9f 100644
--- a/CHANGELOG-WIP.md
+++ b/CHANGELOG-WIP.md
@@ -12,6 +12,8 @@
 - Element conditions within field layout designers’ component settings now only list custom fields present in the current field layout. ([#14787](https://github.com/craftcms/cms/issues/14787))
 - Improved the behavior of the URI input within Edit Route modals. ([#14884](https://github.com/craftcms/cms/issues/14884))
 - Added the `asyncCsrfInputs` config setting. ([#14625](https://github.com/craftcms/cms/pull/14625))
+- Added the `backupCommandFormat` config setting. ([#14897](https://github.com/craftcms/cms/pull/14897))
+- The `backupCommand` config setting can now be set to a closure, which will be passed a `mikehaertl\shellcommand\Command` object. ([#14897](https://github.com/craftcms/cms/pull/14897))
 - Added the `safeMode` config setting. ([#14734](https://github.com/craftcms/cms/pull/14734))
 - `resave` commands now support an `--if-invalid` option. ([#14731](https://github.com/craftcms/cms/issues/14731))
 - Improved the styling of conditional tabs and UI elements within field layout designers.
diff --git a/src/config/GeneralConfig.php b/src/config/GeneralConfig.php
index d6a8adca108..5cca92483d5 100644
--- a/src/config/GeneralConfig.php
+++ b/src/config/GeneralConfig.php
@@ -7,6 +7,7 @@
 
 namespace craft\config;
 
+use Closure;
 use Craft;
 use craft\helpers\ConfigHelper;
 use craft\helpers\DateTimeHelper;
@@ -420,7 +421,7 @@ class GeneralConfig extends BaseConfig
     public bool $backupOnUpdate = true;
 
     /**
-     * @var string|null|false The shell command that Craft should execute to create a database backup.
+     * @var string|null|false|Closure The shell command that Craft should execute to create a database backup.
      *
      * When set to `null` (default), Craft will run `mysqldump` or `pg_dump`, provided that those libraries are in the `$PATH` variable
      * for the system user running the web server.
@@ -448,7 +449,30 @@ class GeneralConfig extends BaseConfig
      *
      * @group Environment
      */
-    public string|null|false $backupCommand = null;
+    public string|null|false|Closure $backupCommand = null;
+
+    /**
+     * @var string|null The output format to pass to `pg_dump` when backing up the database.
+     *
+     * This setting has no effect with MySQL databases.
+     *
+     * Valid options are `custom`, `directory`, `tar`, or `plain`.
+     * When set to `null` (default), `pg_restore` will default to `plain`
+     * @see https://www.postgresql.org/docs/current/app-pgdump.html
+     *
+     *  ::: code
+     *  ```php Static Config
+     *  ->backupCommandFormat('custom')
+     *  ```
+     *  ```shell Environment Override
+     *  CRAFT_BACKUP_COMMAND_FORMAT=custom
+     *  ```
+     *  :::
+     *
+     * @group Environment
+     * @since 4.9.0
+     */
+    public ?string $backupCommandFormat = null;
 
     /**
      * @var string|null The base URL Craft should use when generating control panel URLs.
@@ -2475,7 +2499,7 @@ class GeneralConfig extends BaseConfig
     public string $resourceBaseUrl = '@web/cpresources';
 
     /**
-     * @var string|null|false The shell command Craft should execute to restore a database backup.
+     * @var string|null|false|Closure The shell command Craft should execute to restore a database backup.
      *
      * By default Craft will run `mysql` or `psql`, provided those libraries are in the `$PATH` variable for the user the web server is running as.
      *
@@ -2501,7 +2525,7 @@ class GeneralConfig extends BaseConfig
      *
      * @group Environment
      */
-    public string|null|false $restoreCommand = null;
+    public string|null|false|Closure $restoreCommand = null;
 
     /**
      * @var bool Whether asset URLs should be revved so browsers don’t load cached versions when they’re modified.
@@ -3632,17 +3656,38 @@ public function backupOnUpdate(bool $value = true): self
      * ```
      *
      * @group Environment
-     * @param string|null|false $value
+     * @param string|null|false|Closure $value
      * @return self
      * @see $backupCommand
      * @since 4.2.0
      */
-    public function backupCommand(string|null|false $value): self
+    public function backupCommand(string|null|false|Closure $value): self
     {
         $this->backupCommand = $value;
         return $this;
     }
 
+    /**
+     * The output format to pass to `pg_dump` when backing up the database.
+     *
+     * This setting has no effect with MySQL databases.
+     *
+     * Valid options are `custom`, `directory`, `tar`, or `plain`.
+     * When set to `null` (default), `pg_restore` will default to `plain`
+     * @see https://www.postgresql.org/docs/current/app-pgdump.html
+     *
+     * @group Environment
+     * @param string $value
+     * @return self
+     * @see $backupCommandFormat
+     * @since 4.9.0
+     */
+    public function backupCommandFormat(string $value): self
+    {
+        $this->backupCommandFormat = $value;
+        return $this;
+    }
+
     /**
      * The base URL Craft should use when generating control panel URLs.
      *
@@ -5996,12 +6041,12 @@ public function resourceBaseUrl(string $value): self
      * ```
      *
      * @group Environment
-     * @param string|null|false $value
+     * @param string|null|false|Closure $value
      * @return self
      * @see $restoreCommand
      * @since 4.2.0
      */
-    public function restoreCommand(string|null|false $value): self
+    public function restoreCommand(string|null|false|Closure $value): self
     {
         $this->restoreCommand = $value;
         return $this;
diff --git a/src/console/controllers/DbController.php b/src/console/controllers/DbController.php
index 98d4e525fc0..259e9ca6c67 100644
--- a/src/console/controllers/DbController.php
+++ b/src/console/controllers/DbController.php
@@ -214,7 +214,7 @@ public function actionBackup(?string $path = null): int
             $db->backupTo($path);
             if ($this->zip) {
                 $zipPath = FileHelper::zip($path);
-                unlink($path);
+                FileHelper::unlink($path);
                 $path = $zipPath;
             }
         } catch (Throwable $e) {
diff --git a/src/db/Connection.php b/src/db/Connection.php
index 08d1b91c827..40e4405102d 100644
--- a/src/db/Connection.php
+++ b/src/db/Connection.php
@@ -228,10 +228,11 @@ public function getBackupFilePath(): string
         $version = Craft::$app->getInfo()->version ?? Craft::$app->getVersion();
         $filename = ($systemName ? "$systemName--" : '') . gmdate('Y-m-d-His') . "--v$version";
         $backupPath = Craft::$app->getPath()->getDbBackupPath();
-        $path = $backupPath . DIRECTORY_SEPARATOR . $filename . '.sql';
+        $path = $backupPath . DIRECTORY_SEPARATOR . $filename . $this->_getDumpExtension();
+
         $i = 0;
         while (file_exists($path)) {
-            $path = $backupPath . DIRECTORY_SEPARATOR . $filename . '--' . ++$i . '.sql';
+            $path = $backupPath . DIRECTORY_SEPARATOR . $filename . '--' . ++$i . $this->_getDumpExtension();
         }
         return $path;
     }
@@ -290,12 +291,10 @@ public function backupTo(string $filePath): void
         // Determine the command that should be executed
         $backupCommand = Craft::$app->getConfig()->getGeneral()->backupCommand;
 
-        if ($backupCommand === null) {
-            $backupCommand = $this->getSchema()->getDefaultBackupCommand($event->ignoreTables);
-        }
-
         if ($backupCommand === false) {
             throw new Exception('Database not backed up because the backup command is false.');
+        } elseif ($backupCommand === null || $backupCommand instanceof \Closure) {
+            $backupCommand = $this->getSchema()->getDefaultBackupCommand($event->ignoreTables);
         }
 
         // Create the shell command
@@ -316,10 +315,10 @@ public function backupTo(string $filePath): void
         if ($generalConfig->maxBackups) {
             $backupPath = Craft::$app->getPath()->getDbBackupPath();
 
-            // Grab all .sql files in the backup folder.
+            // Grab all .sql/.dump files in the backup folder.
             $files = array_merge(
-                glob($backupPath . DIRECTORY_SEPARATOR . '*.sql'),
-                glob($backupPath . DIRECTORY_SEPARATOR . '*.sql.zip'),
+                glob($backupPath . DIRECTORY_SEPARATOR . "*.{$this->_getDumpExtension()}"),
+                glob($backupPath . DIRECTORY_SEPARATOR . "*.{$this->_getDumpExtension()}.zip"),
             );
 
             // Sort them by file modified time descending (newest first).
@@ -356,12 +355,10 @@ public function restore(string $filePath): void
         // Determine the command that should be executed
         $restoreCommand = Craft::$app->getConfig()->getGeneral()->restoreCommand;
 
-        if ($restoreCommand === null) {
-            $restoreCommand = $this->getSchema()->getDefaultRestoreCommand();
-        }
-
         if ($restoreCommand === false) {
             throw new Exception('Database not restored because the restore command is false.');
+        } elseif ($restoreCommand === null || $restoreCommand instanceof \Closure) {
+            $restoreCommand = $this->getSchema()->getDefaultRestoreCommand();
         }
 
         // Create the shell command
@@ -489,6 +486,11 @@ public function trigger($name, Event $event = null)
         parent::trigger($name, $event);
     }
 
+    private function _getDumpExtension(): string
+    {
+        return $this->getIsPgsql() && $this->getSchema()->usePgRestore() ? '.dump' : '.sql';
+    }
+
     /**
      * Generates a FK, index, or PK name.
      *
diff --git a/src/db/mysql/Schema.php b/src/db/mysql/Schema.php
index d0b902ef7d4..1a9b6872e90 100644
--- a/src/db/mysql/Schema.php
+++ b/src/db/mysql/Schema.php
@@ -182,76 +182,54 @@ public function createColumnSchemaBuilder($type, $length = null): ColumnSchemaBu
      */
     public function getDefaultBackupCommand(?array $ignoreTables = null): string
     {
-        $useSingleTransaction = true;
-        $serverVersion = App::normalizeVersion($this->getServerVersion());
+        $baseCommand = (new ShellCommand('mysqldump'))
+            ->addArg('--defaults-file=', $this->_createDumpConfigFile())
+            ->addArg('--add-drop-table')
+            ->addArg('--comments')
+            ->addArg('--create-options')
+            ->addArg('--dump-date')
+            ->addArg('--no-autocommit')
+            ->addArg('--routines')
+            ->addArg('--default-character-set=', Craft::$app->getConfig()->getDb()->charset)
+            ->addArg('--set-charset')
+            ->addArg('--triggers')
+            ->addArg('--no-tablespaces');
+
+        $serverVersion = App::normalizeVersion(Craft::$app->getDb()->getServerVersion());
         $isMySQL8 = version_compare($serverVersion, '8', '>=');
+        $ignoreTables = $ignoreTables ?? Craft::$app->getDb()->getIgnoredBackupTables();
+        $commandFromConfig = Craft::$app->getConfig()->getGeneral()->backupCommand;
 
         // https://bugs.mysql.com/bug.php?id=109685
-        if ($isMySQL8 && version_compare($serverVersion, '8.0.32', '>=')) {
-            $useSingleTransaction = false;
-        }
-
-        $defaultArgs =
-            ' --defaults-file="' . $this->_createDumpConfigFile() . '"' .
-            ' --add-drop-table' .
-            ' --comments' .
-            ' --create-options' .
-            ' --dump-date' .
-            ' --no-autocommit' .
-            ' --routines' .
-            ' --default-character-set=' . Craft::$app->getConfig()->getDb()->getCharset() .
-            ' --set-charset' .
-            ' --triggers' .
-            ' --no-tablespaces';
+        $useSingleTransaction = $isMySQL8 && version_compare($serverVersion, '8.0.32', '>=');
 
         if ($useSingleTransaction) {
-            $defaultArgs .= ' --single-transaction';
+            $baseCommand->addArg('--single-transaction');
         }
 
-        // Find out if the db/dump client supports column-statistics
-        $shellCommand = new ShellCommand();
-
-        if (App::isWindows()) {
-            $shellCommand->setCommand('mysqldump --help | findstr "column-statistics"');
-        } else {
-            $shellCommand->setCommand('mysqldump --help | grep "column-statistics"');
+        if ($this->supportsColumnStatistics()) {
+            $baseCommand->addArg('--column-statistics=', '0');
         }
 
-        // If we don't have proc_open, maybe we've got exec
-        if (!function_exists('proc_open') && function_exists('exec')) {
-            $shellCommand->useExec = true;
-        }
+        $schemaDump = (clone $baseCommand)
+            ->addArg('--no-data')
+            ->addArg('--result-file=', '{file}')
+            ->addArg('{database}');
 
-        $success = $shellCommand->execute();
-
-        // if there was output, then column-statistics is supported and we should disable it
-        if ($success && $shellCommand->getOutput()) {
-            $defaultArgs .= ' --column-statistics=0';
-        }
+        $dataDump = (clone $baseCommand)
+            ->addArg('--no-create-info');
 
-        if ($ignoreTables === null) {
-            $ignoreTables = $this->db->getIgnoredBackupTables();
-        }
-        $ignoreTableArgs = [];
         foreach ($ignoreTables as $table) {
             $table = $this->getRawTableName($table);
-            $ignoreTableArgs[] = "--ignore-table={database}.$table";
+            $dataDump->addArg('--ignore-table', "{schema}.$table");
         }
 
-        $schemaDump = 'mysqldump' .
-            $defaultArgs .
-            ' --no-data' .
-            ' --result-file="{file}"' .
-            ' {database}';
-
-        $dataDump = 'mysqldump' .
-            $defaultArgs .
-            ' --no-create-info' .
-            ' ' . implode(' ', $ignoreTableArgs) .
-            ' {database}' .
-            ' >> "{file}"';
+        if ($commandFromConfig instanceof \Closure) {
+            $schemaDump = $commandFromConfig($schemaDump);
+            $dataDump = $commandFromConfig($dataDump);
+        }
 
-        return $schemaDump . ' && ' . $dataDump;
+        return "{$schemaDump->getExecCommand()} && {$dataDump->getExecCommand()} >> {file}";
     }
 
     /**
@@ -262,10 +240,16 @@ public function getDefaultBackupCommand(?array $ignoreTables = null): string
      */
     public function getDefaultRestoreCommand(): string
     {
-        return 'mysql' .
-            ' --defaults-file="' . $this->_createDumpConfigFile() . '"' .
-            ' {database}' .
-            ' < "{file}"';
+        $commandFromConfig = Craft::$app->getConfig()->getGeneral()->restoreCommand;
+        $command = (new ShellCommand('mysql'))
+            ->addArg('--defaults-file=', $this->_createDumpConfigFile())
+            ->addArg('{database}');
+
+        if ($commandFromConfig instanceof \Closure) {
+            $command = $commandFromConfig($command);
+        }
+
+        return $command->getExecCommand() . ' < "{file}"';
     }
 
     /**
@@ -422,6 +406,28 @@ protected function findConstraints($table): void
         }
     }
 
+    protected function supportsColumnStatistics(): bool
+    {
+        // Find out if the db/dump client supports column-statistics
+        $shellCommand = new ShellCommand();
+
+        if (App::isWindows()) {
+            $shellCommand->setCommand('mysqldump --help | findstr "column-statistics"');
+        } else {
+            $shellCommand->setCommand('mysqldump --help | grep "column-statistics"');
+        }
+
+        // If we don't have proc_open, maybe we've got exec
+        if (!function_exists('proc_open') && function_exists('exec')) {
+            $shellCommand->useExec = true;
+        }
+
+        $success = $shellCommand->execute();
+
+        // if there was output, then column-statistics is supported
+        return $success && $shellCommand->getOutput();
+    }
+
     /**
      * Creates a temporary my.cnf file based on the DB config settings.
      *
diff --git a/src/db/pgsql/Schema.php b/src/db/pgsql/Schema.php
index 69bac6eafe6..d251b958e29 100644
--- a/src/db/pgsql/Schema.php
+++ b/src/db/pgsql/Schema.php
@@ -13,6 +13,7 @@
 use craft\db\ExpressionInterface;
 use craft\db\TableSchema;
 use craft\helpers\App;
+use mikehaertl\shellcommand\Command as ShellCommand;
 use yii\db\Exception;
 
 /**
@@ -133,29 +134,37 @@ public function getLastInsertID($sequenceName = ''): string
      */
     public function getDefaultBackupCommand(?array $ignoreTables = null): string
     {
-        if ($ignoreTables === null) {
-            $ignoreTables = $this->db->getIgnoredBackupTables();
-        }
-        $ignoredTableArgs = [];
+        $command = (new ShellCommand('pg_dump'))
+            ->addArg('--dbname=', '{database}')
+            ->addArg('--host=', '{server}')
+            ->addArg('--port=', '{port}')
+            ->addArg('--username=', '{user}')
+            ->addArg('--if-exists')
+            ->addArg('--clean')
+            ->addArg('--no-owner')
+            ->addArg('--no-privileges')
+            ->addArg('--no-acl')
+            ->addArg('--file=', '{file}')
+            ->addArg('--schema=', '{schema}');
+
+        $ignoreTables = $ignoreTables ?? Craft::$app->getDb()->getIgnoredBackupTables();
+        $format = Craft::$app->getConfig()->getGeneral()->backupCommandFormat;
+        $commandFromConfig = Craft::$app->getConfig()->getGeneral()->backupCommand;
+
         foreach ($ignoreTables as $table) {
             $table = $this->getRawTableName($table);
-            $ignoredTableArgs[] = "--exclude-table-data '{schema}.$table'";
+            $command->addArg('--exclude-table-data', "{schema}.$table");
         }
 
-        return $this->_pgpasswordCommand() .
-            'pg_dump' .
-            ' --dbname={database}' .
-            ' --host={server}' .
-            ' --port={port}' .
-            ' --username={user}' .
-            ' --if-exists' .
-            ' --clean' .
-            ' --no-owner' .
-            ' --no-privileges' .
-            ' --no-acl' .
-            ' --file="{file}"' .
-            ' --schema={schema}' .
-            ' ' . implode(' ', $ignoredTableArgs);
+        if ($format) {
+            $command->addArg('--format=', $format);
+        }
+
+        if ($commandFromConfig instanceof \Closure) {
+            $command = $commandFromConfig($command);
+        }
+
+        return $command->getExecCommand();
     }
 
     /**
@@ -165,14 +174,22 @@ public function getDefaultBackupCommand(?array $ignoreTables = null): string
      */
     public function getDefaultRestoreCommand(): string
     {
-        return $this->_pgpasswordCommand() .
-            'psql' .
-            ' --dbname={database}' .
-            ' --host={server}' .
-            ' --port={port}' .
-            ' --username={user}' .
-            ' --no-password' .
-            ' < "{file}"';
+        $command = (new ShellCommand($this->usePgRestore() ? 'pg_restore' : 'psql'))
+            ->addArg('--dbname=', '{database}')
+            ->addArg('--host=', '{server}')
+            ->addArg('--port=', '{port}')
+            ->addArg('--username=', '{user}')
+            ->addArg('--no-password');
+
+        $commandFromConfig = Craft::$app->getConfig()->getGeneral()->restoreCommand;
+
+        if ($commandFromConfig instanceof \Closure) {
+            $command = $commandFromConfig($command);
+        }
+
+        return $this->_pgpasswordCommand()
+            . $command->getExecCommand()
+            . '< "{file}"';
     }
 
     /**
@@ -233,6 +250,20 @@ public function loadTableSchema($name): ?TableSchema
         return null;
     }
 
+    /**
+     * Whether `pg_restore` should be used by default for the backup command.
+     *
+     * @return bool
+     * @since 4.9.0
+     */
+    public function usePgRestore(): bool
+    {
+        return in_array(Craft::$app->getConfig()->getGeneral()->backupCommandFormat, [
+            'custom',
+            'directory',
+        ], true);
+    }
+
     /**
      * Collects extra foreign key information details for the given table.
      *