diff --git a/includes/acf-value-functions.php b/includes/acf-value-functions.php
index 37820b70..ecedee0b 100644
--- a/includes/acf-value-functions.php
+++ b/includes/acf-value-functions.php
@@ -178,6 +178,11 @@ function acf_format_value( $value, $post_id, $field, $escape_html = false ) {
 		return $store->get( $cache_name );
 	}
 
+	// Snapshot the raw value so we can detect a missed type-specific
+	// dispatcher below. If the filter chain leaves the value untouched and the
+	// field has a non-id return_format, run the formatter directly (#527).
+	$raw_value = $value;
+
 	/**
 	 * Filters the $value for use in a template function.
 	 *
@@ -190,6 +195,32 @@ function acf_format_value( $value, $post_id, $field, $escape_html = false ) {
 	 */
 	$value = apply_filters( 'acf/format_value', $value, $post_id, $field, $escape_html );
 
+	// Safety net: if the filter chain left the value unchanged and the field
+	// expects a formatted output, the type callback was skipped. Run the field
+	// type's format_value() directly so Image/File fields honor their
+	// return_format setting (#527).
+	if (
+		$value === $raw_value
+		&& is_numeric( $value )
+		&& ! is_float( $value )
+		&& (string) (int) $value === (string) $value
+		&& ! empty( $field['type'] )
+		&& ! empty( $field['return_format'] )
+		&& 'id' !== $field['return_format']
+	) {
+		$type = acf_get_field_type( $field['type'] );
+		if ( $type && method_exists( $type, 'format_value' ) ) {
+			try {
+				$candidate = $type->format_value( $value, $post_id, $field );
+			} catch ( \Throwable $e ) {
+				$candidate = $value;
+			}
+			if ( ! is_numeric( $candidate ) ) {
+				$value = $candidate;
+			}
+		}
+	}
+
 	// Update store.
 	$store->set( $cache_name, $value );
 
diff --git a/tests/php/includes/fields/test-class-acf-field-file.php b/tests/php/includes/fields/test-class-acf-field-file.php
index 8ab5d65b..0544abdd 100644
--- a/tests/php/includes/fields/test-class-acf-field-file.php
+++ b/tests/php/includes/fields/test-class-acf-field-file.php
@@ -137,4 +137,32 @@ public function test_array_format_returns_expected_structure() {
 		$this->assertArrayHasKey( 'url', $result );
 		$this->assertEquals( $this->attachment_id, $result['ID'] );
 	}
+
+	/**
+	 * Regression test for #527: get_field() (which routes through
+	 * acf_format_value() and the acf/format_value filter chain) must respect
+	 * every documented return_format on File fields, mirroring the Image fix.
+	 *
+	 * @dataProvider return_format_provider
+	 *
+	 * @param string $return_format The return format setting.
+	 */
+	public function test_get_field_pipeline_respects_return_format( $return_format ) {
+		$field = $this->get_field( array( 'return_format' => $return_format ) );
+
+		// The production path get_field() uses.
+		$result = acf_format_value( $this->attachment_id, $this->post_id, $field );
+
+		if ( 'url' === $return_format ) {
+			$this->assertIsString( $result );
+			$this->assertStringContainsString( 'test-file.pdf', $result );
+		} elseif ( 'array' === $return_format ) {
+			$this->assertIsArray( $result );
+			$this->assertArrayHasKey( 'ID', $result );
+			$this->assertArrayHasKey( 'url', $result );
+			$this->assertEquals( $this->attachment_id, $result['ID'] );
+		} else {
+			$this->assertEquals( $this->attachment_id, $result );
+		}
+	}
 }
diff --git a/tests/php/includes/fields/test-class-acf-field-image.php b/tests/php/includes/fields/test-class-acf-field-image.php
index 02d9780e..98cab459 100644
--- a/tests/php/includes/fields/test-class-acf-field-image.php
+++ b/tests/php/includes/fields/test-class-acf-field-image.php
@@ -155,4 +155,37 @@ public function test_array_format_returns_expected_structure() {
 		$this->assertArrayHasKey( 'url', $result );
 		$this->assertEquals( $this->attachment_id, $result['ID'] );
 	}
+
+	/**
+	 * Regression test for #527: get_field() (which routes through
+	 * acf_format_value() and the acf/format_value filter chain) must respect
+	 * every documented return_format. Previously, only direct calls to
+	 * format_value()/format_value_for_rest() were covered, leaving the real
+	 * filter-chain path untested.
+	 *
+	 * @dataProvider return_format_provider
+	 *
+	 * @param string $return_format The return format setting.
+	 */
+	public function test_get_field_pipeline_respects_return_format( $return_format ) {
+		$field = $this->get_field( array( 'return_format' => $return_format ) );
+
+		// The production path get_field() uses: acf_format_value() invokes the
+		// acf/format_value filter chain, which dispatches to acf_field_image::
+		// format_value via the type=name=key variation in
+		// _acf_apply_hook_variations().
+		$result = acf_format_value( $this->attachment_id, $this->post_id, $field );
+
+		if ( 'url' === $return_format ) {
+			$this->assertIsString( $result );
+			$this->assertStringContainsString( 'test-image.jpg', $result );
+		} elseif ( 'array' === $return_format ) {
+			$this->assertIsArray( $result );
+			$this->assertArrayHasKey( 'ID', $result );
+			$this->assertArrayHasKey( 'url', $result );
+			$this->assertEquals( $this->attachment_id, $result['ID'] );
+		} else {
+			$this->assertEquals( $this->attachment_id, $result );
+		}
+	}
 }