diff --git a/addons/web/static/src/js/fields/basic_fields.js b/addons/web/static/src/js/fields/basic_fields.js
index 2c3e03681db..350dc5f5674 100644
--- a/addons/web/static/src/js/fields/basic_fields.js
+++ b/addons/web/static/src/js/fields/basic_fields.js
@@ -1634,6 +1634,7 @@ var AbstractFieldBinary = AbstractField.extend({
         this.fields = record.fields;
         this.useFileAPI = !!window.FileReader;
         this.max_upload_size = 64 * 1024 * 1024; // 64Mo
+        this.accepted_file_extensions = (this.nodeOptions && this.nodeOptions.accepted_file_extensions) || this.accepted_file_extensions || '*';
         if (!this.useFileAPI) {
             var self = this;
             this.fileupload_id = _.uniqueId('o_fileupload');
@@ -1765,6 +1766,7 @@ var FieldBinaryImage = AbstractFieldBinary.extend({
         'i': 'png',
         'P': 'svg+xml',
     },
+    accepted_file_extensions: 'image/*',
     /**
      * Returns the image URL from a model.
      *
@@ -1976,6 +1978,7 @@ var FieldPdfViewer = FieldBinaryFile.extend({
     description: _lt("PDF Viewer"),
     supportedFieldTypes: ['binary'],
     template: 'FieldPdfViewer',
+    accepted_file_extensions: 'application/pdf',
     /**
      * @override
      */
diff --git a/addons/web/static/src/js/fields/relational_fields.js b/addons/web/static/src/js/fields/relational_fields.js
index 2b6a0d44854..4a68c140056 100644
--- a/addons/web/static/src/js/fields/relational_fields.js
+++ b/addons/web/static/src/js/fields/relational_fields.js
@@ -2007,6 +2007,7 @@ var FieldMany2ManyBinaryMultiFiles = AbstractField.extend({
         this.uploadedFiles = {};
         this.uploadingFiles = [];
         this.fileupload_id = _.uniqueId('oe_fileupload_temp');
+        this.accepted_file_extensions = (this.nodeOptions && this.nodeOptions.accepted_file_extensions) || this.accepted_file_extensions || '*';
         $(window).on(this.fileupload_id, this._onFileLoaded.bind(this));
 
         this.metadata = {};
diff --git a/addons/web/static/src/js/views/kanban/kanban_record.js b/addons/web/static/src/js/views/kanban/kanban_record.js
index 0c4213c60b7..ab19e73d2eb 100644
--- a/addons/web/static/src/js/views/kanban/kanban_record.js
+++ b/addons/web/static/src/js/views/kanban/kanban_record.js
@@ -395,7 +395,7 @@ var KanbanRecord = Widget.extend({
             fields: ['id', 'name'],
         }).then(function (attachmentIds) {
             self.imageUploadID = _.uniqueId('o_cover_image_upload');
-            self.image_only = true;  // prevent uploading of other file types
+            self.accepted_file_extensions = 'image/*';  // prevent uploading of other file types
             var coverId = self.record[fieldName] && self.record[fieldName].raw_value;
             var $content = $(QWeb.render('KanbanView.SetCoverModal', {
                 coverId: coverId,
diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index b76e86c036d..7800bc1a218 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -872,7 +872,6 @@
 
                 <span class="o_form_binary_progress">Uploading...</span>
                 <t t-call="HiddenInputFile">
-                    <t t-set="image_only" t-value="true"/>
                     <t t-set="fileupload_id" t-value="widget.fileupload_id"/>
                 </t>
             </div>
@@ -924,8 +923,8 @@
               method="post" enctype="multipart/form-data" t-att-action="fileupload_action || '/web/binary/upload'">
             <input type="hidden" name="csrf_token" t-att-value="csrf_token"/>
             <input type="hidden" name="callback" t-att-value="fileupload_id"/>
-            <input t-if="widget.image_only" type="file" class="o_input_file" name="ufile" accept="image/*"/>
-            <input t-if="!widget.image_only" type="file" class="o_input_file" name="ufile" t-att="{'multiple': multi_upload ? 'multiple' : null}"/>
+            <input type="file" class="o_input_file" name="ufile"
+                t-att="{'multiple': multi_upload ? 'multiple' : null, 'accept': widget.accepted_file_extensions || '*'}"/>
             <t t-raw="0"/>
         </form>
         <iframe t-att-id="fileupload_id" t-att-name="fileupload_id" style="display: none"/>
@@ -985,21 +984,13 @@
             <button class="btn btn-secondary fa fa-trash-o o_clear_file_button" title="Clear" aria-label="Clear" type="button"></button>
         </div>
         <iframe class="o_pdfview_iframe o_field_pdfviewer"/>
-        <t t-call="HiddenInputPDFFile">
+        <t t-call="HiddenInputFile">
             <t t-set="fileupload_id" t-value="widget.fileupload_id"/>
             <t t-set="fileupload_style" t-translation="off">overflow-x: hidden</t>
         </t>
     </div>
 </t>
 
-<t t-name="HiddenInputPDFFile" t-extend="HiddenInputFile">
-    <!-- remove the inputs and put a new one for pdf only -->
-    <t t-jquery="input[type='file']" t-operation="replace"/>
-    <t t-jquery="form" t-operation="append">
-        <input type="file" class="o_input_file" name="ufile" accept="application/pdf"/>
-    </t>
-</t>
-
 <div t-name="FieldBinaryFileUploader" t-attf-class="oe_fileupload #{widget.attrs.class ? widget.attrs.class :''}" aria-atomic="true">
     <div class="oe_placeholder_files"/>
     <div t-if="widget.mode !== 'readonly'" class="oe_add">
diff --git a/addons/web/static/tests/fields/basic_fields_tests.js b/addons/web/static/tests/fields/basic_fields_tests.js
index e864f6341f9..92f2e163b99 100644
--- a/addons/web/static/tests/fields/basic_fields_tests.js
+++ b/addons/web/static/tests/fields/basic_fields_tests.js
@@ -2095,6 +2095,22 @@ QUnit.module('basic_fields', {
         session.get_file = oldGetFile;
     });
 
+    QUnit.test('binary fields: option accepted_file_extensions', async function (assert) {
+        assert.expect(1);
+
+        var form = await createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: `<form string="Partners">
+                      <field name="document" widget="binary" options="{'accepted_file_extensions': '.dat,.bin'}"/>
+                   </form>`
+        });
+        assert.strictEqual(form.$('input.o_input_file').attr('accept'), '.dat,.bin',
+            "the input should have the correct ``accept`` attribute");
+        form.destroy();
+    });
+
     QUnit.test('binary fields that are readonly in create mode do not download', async function (assert) {
         assert.expect(2);
 
@@ -2414,6 +2430,34 @@ QUnit.module('basic_fields', {
         form.destroy();
     });
 
+    QUnit.test('image: option accepted_file_extensions', async function (assert) {
+        assert.expect(2);
+
+        var form = await createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: `<form string="Partners">
+                      <field name="document" widget="image" options="{'accepted_file_extensions': '.png,.jpeg'}"/>
+                   </form>`
+        });
+        assert.strictEqual(form.$('input.o_input_file').attr('accept'), '.png,.jpeg',
+            "the input should have the correct ``accept`` attribute");
+        form.destroy();
+
+        var form = await createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: `<form string="Partners">
+                      <field name="document" widget="image"/>
+                   </form>`
+        });
+        assert.strictEqual(form.$('input.o_input_file').attr('accept'), 'image/*',
+            'the default value for the attribute "accept" on the "image" widget must be "image/*"');
+        form.destroy();
+    });
+
     QUnit.test('image fields in subviews are loaded correctly', async function (assert) {
         assert.expect(6);
 
diff --git a/addons/web/static/tests/fields/relational_fields_tests.js b/addons/web/static/tests/fields/relational_fields_tests.js
index d9e9b69e6c2..f8c466099e0 100644
--- a/addons/web/static/tests/fields/relational_fields_tests.js
+++ b/addons/web/static/tests/fields/relational_fields_tests.js
@@ -2317,7 +2317,7 @@ QUnit.module('relational_fields', {
     QUnit.module('FieldMany2ManyBinaryMultiFiles');
 
     QUnit.test('widget many2many_binary', async function (assert) {
-        assert.expect(15);
+        assert.expect(16);
         this.data['ir.attachment'] = {
             fields: {
                 name: {string:"Name", type: "char"},
@@ -2341,7 +2341,7 @@ QUnit.module('relational_fields', {
             model: 'turtle',
             data: this.data,
             arch:'<form string="Turtles">' +
-                    '<group><field name="picture_ids" widget="many2many_binary"/></group>' +
+                    '<group><field name="picture_ids" widget="many2many_binary" options="{\'accepted_file_extensions\': \'image/*\'}"/></group>' +
                 '</form>',
             archs: {
                 'ir.attachment,false,list': '<tree string="Pictures"><field name="name"/></tree>',
@@ -2374,6 +2374,9 @@ QUnit.module('relational_fields', {
         assert.containsOnce(form, 'div.o_field_widget.oe_fileupload .o_hidden_input_file form',
             "there should be a hidden form to upload attachments");
 
+        assert.strictEqual(form.$('input.o_input_file').attr('accept'), 'image/*',
+            "there should be an attribute \"accept\" on the input")
+
         // TODO: add an attachment
         // no idea how to test this
 
diff --git a/doc/reference/javascript_reference.rst b/doc/reference/javascript_reference.rst
index 49ab37cf2e0..bc8b949c80f 100644
--- a/doc/reference/javascript_reference.rst
+++ b/doc/reference/javascript_reference.rst
@@ -1777,6 +1777,9 @@ order.
       option is useful to inform the web client that the default field name is
       not the name of the current field, but the name of another field.
 
+    - accepted_file_extensions: the file extension the user can pick from the file input dialog box (default value is 'image/*')
+      (cf: ``accept`` attribute on <input type="file"/>)
+
     .. code-block:: xml
 
         <field name="image" widget='image' options='{"preview_image":"image_128"}'/>
@@ -1786,6 +1789,11 @@ order.
 
     - Supported field types: *binary*
 
+    Options:
+
+    - accepted_file_extensions: the file extension the user can pick from the file input dialog box
+      (cf: ``accept`` attribute on <input type="file"/>)
+
     Attribute:
 
     - filename: saving a binary file will lose its file name, since it only
@@ -2117,6 +2125,10 @@ Relational fields
 
     - Supported field types: *many2many*
 
+    Options:
+    - accepted_file_extensions: the file extension the user can pick from the file input dialog box
+      (cf: ``accept`` attribute on <input type="file"/>)
+
 - many2many_tags (FieldMany2ManyTags)
     Display many2many as a list of tags.