diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index bf1c241d..c4016aca 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -196,9 +196,9 @@ async fn send_request(
     let pool2 = pool.clone();
 
     tokio::spawn(async move {
-        actually_send_request(req, &response2, &environment_id2, &app_handle2, &pool2)
-            .await
-            .expect("Failed to send request");
+        if let Err(e) = actually_send_request(req, &response2, &environment_id2, &app_handle2, &pool2).await {
+            response_err(&response2, e, &app_handle2, &pool2).await.expect("Failed to update response");
+        }
     });
 
     emit_and_return(&window, "created_model", response)
diff --git a/src-tauri/src/send.rs b/src-tauri/src/send.rs
index 7addf34e..8c3f7db3 100644
--- a/src-tauri/src/send.rs
+++ b/src-tauri/src/send.rs
@@ -160,7 +160,7 @@ pub async fn actually_send_request(
                     multipart_form = multipart_form.part(
                         render::render(name, &workspace, environment_ref),
                         match !file.is_empty() {
-                            true => multipart::Part::bytes(fs::read(file).expect("Failed to read file")),
+                            true => multipart::Part::bytes(fs::read(file).map_err(|e| e.to_string())?),
                             false => multipart::Part::text(render::render(value, &workspace, environment_ref)),
                         },
                     );
diff --git a/src-web/components/FormMultipartEditor.tsx b/src-web/components/FormMultipartEditor.tsx
index 5a66d354..31225c88 100644
--- a/src-web/components/FormMultipartEditor.tsx
+++ b/src-web/components/FormMultipartEditor.tsx
@@ -1,6 +1,6 @@
 import { useCallback, useMemo } from 'react';
 import type { HttpRequest } from '../lib/models';
-import type { PairEditorProps } from './core/PairEditor';
+import type { Pair, PairEditorProps } from './core/PairEditor';
 import { PairEditor } from './core/PairEditor';
 
 type Props = {
@@ -10,18 +10,27 @@ type Props = {
 };
 
 export function FormMultipartEditor({ body, forceUpdateKey, onChange }: Props) {
-  const pairs = useMemo(
+  const pairs = useMemo<Pair[]>(
     () =>
       (Array.isArray(body.form) ? body.form : []).map((p) => ({
         enabled: p.enabled,
         name: p.name,
-        value: p.value,
+        value: p.file ?? p.value,
+        isFile: !!p.file,
       })),
     [body.form],
   );
 
   const handleChange = useCallback<PairEditorProps['onChange']>(
-    (pairs) => onChange({ form: pairs }),
+    (pairs) =>
+      onChange({
+        form: pairs.map((p) => ({
+          enabled: p.enabled,
+          name: p.name,
+          file: p.isFile ? p.value : undefined,
+          value: p.isFile ? undefined : p.value,
+        })),
+      }),
     [onChange],
   );
 
@@ -29,6 +38,7 @@ export function FormMultipartEditor({ body, forceUpdateKey, onChange }: Props) {
     <PairEditor
       valueAutocompleteVariables
       nameAutocompleteVariables
+      allowFileValues
       pairs={pairs}
       onChange={handleChange}
       forceUpdateKey={forceUpdateKey}
diff --git a/src-web/components/FormUrlencodedEditor.tsx b/src-web/components/FormUrlencodedEditor.tsx
index 754d7f22..7780895b 100644
--- a/src-web/components/FormUrlencodedEditor.tsx
+++ b/src-web/components/FormUrlencodedEditor.tsx
@@ -1,6 +1,6 @@
 import { useCallback, useMemo } from 'react';
 import type { HttpRequest } from '../lib/models';
-import type { PairEditorProps } from './core/PairEditor';
+import type { Pair, PairEditorProps } from './core/PairEditor';
 import { PairEditor } from './core/PairEditor';
 
 type Props = {
@@ -10,18 +10,19 @@ type Props = {
 };
 
 export function FormUrlencodedEditor({ body, forceUpdateKey, onChange }: Props) {
-  const pairs = useMemo(
+  const pairs = useMemo<Pair[]>(
     () =>
       (Array.isArray(body.form) ? body.form : []).map((p) => ({
-        enabled: p.enabled,
-        name: p.name,
-        value: p.value,
+        enabled: !!p.enabled,
+        name: p.name || '',
+        value: p.value || '',
       })),
     [body.form],
   );
 
   const handleChange = useCallback<PairEditorProps['onChange']>(
-    (pairs) => onChange({ form: pairs }),
+    (pairs) =>
+      onChange({ form: pairs.map((p) => ({ enabled: p.enabled, name: p.name, value: p.value })) }),
     [onChange],
   );
 
diff --git a/src-web/components/Sidebar.tsx b/src-web/components/Sidebar.tsx
index 4b29891f..a9d9ea19 100644
--- a/src-web/components/Sidebar.tsx
+++ b/src-web/components/Sidebar.tsx
@@ -222,8 +222,9 @@ export function Sidebar({ className }: Props) {
 
   useKey(
     'ArrowUp',
-    () => {
+    (e) => {
       if (!hasFocus) return;
+      e.preventDefault();
       const i = selectableRequests.findIndex((r) => r.id === selectedId);
       const newSelectable = selectableRequests[i - 1];
       if (newSelectable == null) {
@@ -239,8 +240,9 @@ export function Sidebar({ className }: Props) {
 
   useKey(
     'ArrowDown',
-    () => {
+    (e) => {
       if (!hasFocus) return;
+      e.preventDefault();
       const i = selectableRequests.findIndex((r) => r.id === selectedId);
       const newSelectable = selectableRequests[i + 1];
       if (newSelectable == null) {
diff --git a/src-web/components/core/PairEditor.tsx b/src-web/components/core/PairEditor.tsx
index 6197c5bc..d44b2515 100644
--- a/src-web/components/core/PairEditor.tsx
+++ b/src-web/components/core/PairEditor.tsx
@@ -1,16 +1,19 @@
+import { open } from '@tauri-apps/api/dialog';
 import classNames from 'classnames';
+import type { EditorView } from 'codemirror';
 import { Fragment, memo, useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import type { XYCoord } from 'react-dnd';
 import { useDrag, useDrop } from 'react-dnd';
 import { v4 as uuid } from 'uuid';
 import { DropMarker } from '../DropMarker';
+import { Button } from './Button';
 import { Checkbox } from './Checkbox';
+import { Dropdown } from './Dropdown';
 import type { GenericCompletionConfig } from './Editor/genericCompletion';
 import { Icon } from './Icon';
 import { IconButton } from './IconButton';
 import type { InputProps } from './Input';
 import { Input } from './Input';
-import type { EditorView } from 'codemirror';
 
 export type PairEditorProps = {
   pairs: Pair[];
@@ -23,6 +26,7 @@ export type PairEditorProps = {
   valueAutocomplete?: (name: string) => GenericCompletionConfig | undefined;
   nameAutocompleteVariables?: boolean;
   valueAutocompleteVariables?: boolean;
+  allowFileValues?: boolean;
   nameValidate?: InputProps['validate'];
   valueValidate?: InputProps['validate'];
 };
@@ -32,6 +36,7 @@ export type Pair = {
   enabled?: boolean;
   name: string;
   value: string;
+  isFile?: boolean;
 };
 
 type PairContainer = {
@@ -52,6 +57,7 @@ export const PairEditor = memo(function PairEditor({
   valueAutocompleteVariables,
   valuePlaceholder,
   valueValidate,
+  allowFileValues,
 }: PairEditorProps) {
   const [forceFocusPairId, setForceFocusPairId] = useState<string | null>(null);
   const [hoveredIndex, setHoveredIndex] = useState<number | null>(null);
@@ -167,6 +173,7 @@ export const PairEditor = memo(function PairEditor({
               pairContainer={p}
               className="py-1"
               isLast={isLast}
+              allowFileValues={allowFileValues}
               nameAutocompleteVariables={nameAutocompleteVariables}
               valueAutocompleteVariables={valueAutocompleteVariables}
               forceFocusPairId={forceFocusPairId}
@@ -177,7 +184,6 @@ export const PairEditor = memo(function PairEditor({
               valuePlaceholder={isLast ? valuePlaceholder : ''}
               nameValidate={nameValidate}
               valueValidate={valueValidate}
-              showDelete={!isLast}
               onChange={handleChange}
               onFocus={handleFocus}
               onDelete={handleDelete}
@@ -199,7 +205,6 @@ type FormRowProps = {
   className?: string;
   pairContainer: PairContainer;
   forceFocusPairId?: string | null;
-  showDelete?: boolean;
   onMove: (id: string, side: 'above' | 'below') => void;
   onEnd: (id: string) => void;
   onChange: (pair: PairContainer) => void;
@@ -218,17 +223,18 @@ type FormRowProps = {
   | 'nameValidate'
   | 'valueValidate'
   | 'forceUpdateKey'
+  | 'allowFileValues'
 >;
 
 const FormRow = memo(function FormRow({
+  allowFileValues,
   className,
   forceFocusPairId,
   forceUpdateKey,
   isLast,
   nameAutocomplete,
-  namePlaceholder,
   nameAutocompleteVariables,
-  valueAutocompleteVariables,
+  namePlaceholder,
   nameValidate,
   onChange,
   onDelete,
@@ -236,8 +242,8 @@ const FormRow = memo(function FormRow({
   onFocus,
   onMove,
   pairContainer,
-  showDelete,
   valueAutocomplete,
+  valueAutocompleteVariables,
   valuePlaceholder,
   valueValidate,
 }: FormRowProps) {
@@ -261,8 +267,14 @@ const FormRow = memo(function FormRow({
     [onChange, id, pairContainer.pair],
   );
 
-  const handleChangeValue = useMemo(
-    () => (value: string) => onChange({ id, pair: { ...pairContainer.pair, value } }),
+  const handleChangeValueText = useMemo(
+    () => (value: string) =>
+      onChange({ id, pair: { ...pairContainer.pair, value, isFile: false } }),
+    [onChange, id, pairContainer.pair],
+  );
+
+  const handleChangeValueFile = useMemo(
+    () => (value: string) => onChange({ id, pair: { ...pairContainer.pair, value, isFile: true } }),
     [onChange, id, pairContainer.pair],
   );
 
@@ -354,31 +366,66 @@ const FormRow = memo(function FormRow({
           autocomplete={nameAutocomplete}
           autocompleteVariables={nameAutocompleteVariables}
         />
-        <Input
-          hideLabel
-          useTemplating
-          size="sm"
-          containerClassName={classNames(isLast && 'border-dashed')}
-          validate={valueValidate}
-          forceUpdateKey={forceUpdateKey}
-          defaultValue={pairContainer.pair.value}
-          label="Value"
-          name="value"
-          onChange={handleChangeValue}
-          onFocus={handleFocus}
-          placeholder={valuePlaceholder ?? 'value'}
-          autocomplete={valueAutocomplete?.(pairContainer.pair.name)}
-          autocompleteVariables={valueAutocompleteVariables}
-        />
+        <div className="w-full grid grid-cols-[minmax(0,1fr)_auto] gap-1 items-center">
+          {pairContainer.pair.isFile ? (
+            <Button
+              size="xs"
+              color="gray"
+              className="font-mono text-xs"
+              onClick={async (e) => {
+                e.preventDefault();
+                const file = await open({
+                  title: 'Select file',
+                  multiple: false,
+                });
+                handleChangeValueFile((Array.isArray(file) ? file[0] : file) ?? '');
+              }}
+            >
+              {getFileName(pairContainer.pair.value) || 'Select File'}
+            </Button>
+          ) : (
+            <Input
+              hideLabel
+              useTemplating
+              size="sm"
+              containerClassName={classNames(isLast && 'border-dashed')}
+              validate={valueValidate}
+              forceUpdateKey={forceUpdateKey}
+              defaultValue={pairContainer.pair.value}
+              label="Value"
+              name="value"
+              onChange={handleChangeValueText}
+              onFocus={handleFocus}
+              placeholder={valuePlaceholder ?? 'value'}
+              autocomplete={valueAutocomplete?.(pairContainer.pair.name)}
+              autocompleteVariables={valueAutocompleteVariables}
+            />
+          )}
+          {allowFileValues && (
+            <Dropdown
+              items={[
+                { key: 'text', label: 'Text', onSelect: () => handleChangeValueText('') },
+                { key: 'file', label: 'File', onSelect: () => handleChangeValueFile('') },
+              ]}
+            >
+              <IconButton
+                iconSize="sm"
+                size="xs"
+                icon={isLast ? 'empty' : 'chevronDown'}
+                title="Select form data type"
+              />
+            </Dropdown>
+          )}
+        </div>
       </div>
       <IconButton
-        aria-hidden={!showDelete}
-        disabled={!showDelete}
+        aria-hidden={isLast}
+        disabled={isLast}
         color="custom"
-        icon={showDelete ? 'trash' : 'empty'}
+        icon={!isLast ? 'trash' : 'empty'}
         size="sm"
         title="Delete header"
-        onClick={showDelete ? handleDelete : undefined}
+        onClick={!isLast ? handleDelete : undefined}
         className="ml-0.5 group-hover:!opacity-100 focus-visible:!opacity-100"
       />
     </div>
@@ -387,6 +434,11 @@ const FormRow = memo(function FormRow({
 
 const newPairContainer = (initialPair?: Pair): PairContainer => {
   const id = initialPair?.id ?? uuid();
-  const pair = initialPair ?? { name: '', value: '', enabled: true };
+  const pair = initialPair ?? { name: '', value: '', enabled: true, isFile: false };
   return { id, pair };
 };
+
+const getFileName = (path: string): string => {
+  const parts = path.split(/[\\/]/);
+  return parts[parts.length - 1] ?? '';
+};
diff --git a/src-web/hooks/useSendAnyRequest.ts b/src-web/hooks/useSendAnyRequest.ts
index 012ab412..0f95b838 100644
--- a/src-web/hooks/useSendAnyRequest.ts
+++ b/src-web/hooks/useSendAnyRequest.ts
@@ -3,11 +3,14 @@ import { invoke } from '@tauri-apps/api';
 import { trackEvent } from '../lib/analytics';
 import type { HttpResponse } from '../lib/models';
 import { useActiveEnvironmentId } from './useActiveEnvironmentId';
+import { useAlert } from './useAlert';
 
 export function useSendAnyRequest() {
   const environmentId = useActiveEnvironmentId();
+  const alert = useAlert();
   return useMutation<HttpResponse, string, string | null>({
     mutationFn: (id) => invoke('send_request', { requestId: id, environmentId }),
     onSettled: () => trackEvent('http_request', 'send'),
+    onError: (err) => alert({ title: 'Export Failed', body: err }),
   });
 }