diff --git a/ChangeLog b/ChangeLog
index 7846a5f4a3..890a8b2cf1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18,6 +18,7 @@
 - add `premultiplied` option to smartcrop [lovell]
 - add "prewitt" and "scharr" edge detectors, "sobel" is more accurate for
   non-uchar formats [jcupitt]
+- add support for forms in pdfium loader [kleisauke]
 
 TBD 8.14.3
 
diff --git a/libvips/foreign/pdfiumload.c b/libvips/foreign/pdfiumload.c
index 7f62246941..3d0121f6a8 100644
--- a/libvips/foreign/pdfiumload.c
+++ b/libvips/foreign/pdfiumload.c
@@ -16,6 +16,8 @@
  * 	- add password
  * 21/5/22
  * 	- improve transparency handling [DarthSim]
+ * 21/4/23
+ * 	- add support for forms [kleisauke]
  */
 
 /*
@@ -107,6 +109,7 @@ EOF
 #include <fpdfview.h>
 #include <fpdf_doc.h>
 #include <fpdf_edit.h>
+#include <fpdf_formfill.h>
 
 typedef struct _VipsForeignLoadPdf {
 	VipsForeignLoad parent_object;
@@ -142,6 +145,8 @@ typedef struct _VipsForeignLoadPdf {
 	FPDF_FILEACCESS file_access;
 	FPDF_DOCUMENT doc;
 	FPDF_PAGE page;
+	FPDF_FORMFILLINFO form_callbacks;
+	FPDF_FORMHANDLE form;
 	int current_page;
 
 	/* Doc has this many pages. 
@@ -195,6 +200,7 @@ vips_foreign_load_pdf_close( VipsForeignLoadPdf *pdf )
 	g_mutex_lock( vips_pdfium_mutex );
 
 	VIPS_FREEF( FPDF_ClosePage, pdf->page ); 
+	VIPS_FREEF( FPDFDOC_ExitFormFillEnvironment, pdf->form ); 
 	VIPS_FREEF( FPDF_CloseDocument, pdf->doc ); 
 	VIPS_UNREF( pdf->source );
 
@@ -272,6 +278,8 @@ vips_foreign_load_pdf_build( VipsObject *object )
 	if( !vips_object_argument_isset( object, "scale" ) )
 		pdf->scale = pdf->dpi / 72.0;
 
+	pdf->form_callbacks.version = 2;
+
 	/* pdfium must know the file length, unfortunately.
 	 */
 	if( pdf->source ) { 
@@ -301,6 +309,17 @@ vips_foreign_load_pdf_build( VipsObject *object )
 			return( -1 ); 
 		}
 
+		if( !(pdf->form = FPDFDOC_InitFormFillEnvironment( pdf->doc,
+			&pdf->form_callbacks )) ) {
+			g_mutex_unlock( vips_pdfium_mutex );
+			vips_pdfium_error();
+			vips_error( "pdfload", 
+				_( "%s: unable to initialize form fill environment" ), 
+				vips_connection_nick( 
+					VIPS_CONNECTION( pdf->source ) ) );
+			return( -1 ); 
+		}
+
 		g_mutex_unlock( vips_pdfium_mutex );
 	}
 
@@ -593,6 +612,10 @@ vips_foreign_load_pdf_generate( VipsRegion *or,
 			0, 0, rect.width, rect.height,
 			0, 0 ); 
 
+		FPDF_FFLDraw( pdf->form, bitmap, pdf->page,
+			0, 0, rect.width, rect.height, 
+			0, 0 );
+
 		FPDFBitmap_Destroy( bitmap ); 
 
 		g_mutex_unlock( vips_pdfium_mutex );