webview

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Provides APIs to create webviews, communicate with other webviews and manipulate the current webview.

Webview events

Events can be listened to using Webview.listen:

import { getCurrentWebview } from "@tauri-apps/api/webview";
getCurrentWebview().listen("my-webview-event", ({ event, payload }) => { });

Classes

Webview

Create new webview or get a handle to an existing one.

Webviews are identified by a label a unique identifier that can be used to reference it later. It may only contain alphanumeric characters a-zA-Z plus the following special characters -, /, : and _.

Example

import { Window } from "@tauri-apps/api/window"
import { Webview } from "@tauri-apps/api/webview"

const appWindow = new Window('uniqueLabel');

appWindow.once('tauri://created', async function () {
  // `new Webview` Should be called after the window is successfully created,
  // or webview may not be attached to the window since window is not created yet.

  // loading embedded asset:
  const webview = new Webview(appWindow, 'theUniqueLabel', {
    url: 'path/to/page.html',

    // create a webview with specific logical position and size
    x: 0,
    y: 0,
    width: 800,
    height: 600,
  });
  // alternatively, load a remote URL:
  const webview = new Webview(appWindow, 'theUniqueLabel', {
    url: 'https://github.com/tauri-apps/tauri',

    // create a webview with specific logical position and size
    x: 0,
    y: 0,
    width: 800,
    height: 600,
  });

  webview.once('tauri://created', function () {
    // webview successfully created
  });
  webview.once('tauri://error', function (e) {
    // an error happened creating the webview
  });

  // emit an event to the backend
  await webview.emit("some-event", "data");
  // listen to an event from the backend
  const unlisten = await webview.listen("event-name", e => { });
  unlisten();
});

Since

2.0.0

Extended by

WebviewWindow

Constructors

new Webview()

new Webview(
   window,
   label,
   options): Webview

Creates a new Webview.

Parameters

Parameter	Type	Description
`window`	`Window`	the window to add this webview to.
`label`	`string`	The unique webview label. Must be alphanumeric: `a-zA-Z-/:_`.
`options`	`WebviewOptions`	-

Returns

Webview

The Webview instance to communicate with the webview.

Example

import { Window } from '@tauri-apps/api/window'
import { Webview } from '@tauri-apps/api/webview'
const appWindow = new Window('my-label')

appWindow.once('tauri://created', async function() {
  const webview = new Webview(appWindow, 'my-label', {
    url: 'https://github.com/tauri-apps/tauri',

    // create a webview with specific logical position and size
    x: 0,
    y: 0,
    width: 800,
    height: 600,
  });

  webview.once('tauri://created', function () {
    // webview successfully created
  });
  webview.once('tauri://error', function (e) {
    // an error happened creating the webview
  });
});

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L193

Properties

Property	Type	Description	Defined in
`label`	`string`	The webview label. It is a unique identifier for the webview, can be used to reference it later.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L154
`listeners`	`Record`<`string`, `EventCallback`<`any`>[]>	Local event listeners.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L159
`window`	`Window`	The window hosting this webview.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L156

Methods

clearAllBrowsingData()

clearAllBrowsingData(): Promise<void>

Clears all browsing data for this webview.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().clearAllBrowsingData();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L588

close()

close(): Promise<void>

Closes the webview.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().close();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L435

emit()

emit<T>(event, payload?): Promise<void>

Emits an event to all targets.

Type Parameters

Type Parameter
`T`

Parameters

Parameter	Type	Description
`event`	`string`	Event name. Must include only alphanumeric characters, `-`, `/`, `:` and `_`.
`payload`?	`T`	Event payload.

Returns

Promise<void>

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().emit('webview-loaded', { loggedIn: true, token: 'authToken' });

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L324

emitTo()

emitTo<T>(
   target,
   event,
payload?): Promise<void>

Emits an event to all targets matching the given target.

Type Parameters

Type Parameter
`T`

Parameters

Parameter	Type	Description
`target`	`string` \| `EventTarget`	Label of the target Window/Webview/WebviewWindow or raw EventTarget object.
`event`	`string`	Event name. Must include only alphanumeric characters, `-`, `/`, `:` and `_`.
`payload`?	`T`	Event payload.

Returns

Promise<void>

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().emitTo('main', 'webview-loaded', { loggedIn: true, token: 'authToken' });

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L352

hide()

hide(): Promise<void>

Hide the webview.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().hide();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L522

listen()

listen<T>(event, handler): Promise<UnlistenFn>

Listen to an emitted event on this webview.

Type Parameters

Type Parameter
`T`

Parameters

Parameter	Type	Description
`event`	`EventName`	Event name. Must include only alphanumeric characters, `-`, `/`, `:` and `_`.
`handler`	`EventCallback`<`T`>	Event handler.

Returns

Promise<UnlistenFn>

A promise resolving to a function to unlisten to the event. Note that removing the listener is required if your listener goes out of scope e.g. the component is unmounted.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
const unlisten = await getCurrentWebview().listen<string>('state-changed', (event) => {
  console.log(`Got error: ${payload}`);
});

// you need to call unlisten if your handler goes out of scope e.g. the component is unmounted
unlisten();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L261

onDragDropEvent()

onDragDropEvent(handler): Promise<UnlistenFn>

Listen to a file drop event. The listener is triggered when the user hovers the selected files on the webview, drops the files or cancels the operation.

Parameters

Parameter	Type
`handler`	`EventCallback`<`DragDropEvent`>

Returns

Promise<UnlistenFn>

A promise resolving to a function to unlisten to the event. Note that removing the listener is required if your listener goes out of scope e.g. the component is unmounted.

Example

import { getCurrentWebview } from "@tauri-apps/api/webview";
const unlisten = await getCurrentWebview().onDragDropEvent((event) => {
 if (event.payload.type === 'over') {
   console.log('User hovering', event.payload.position);
 } else if (event.payload.type === 'drop') {
   console.log('User dropped', event.payload.paths);
 } else {
   console.log('File drop cancelled');
 }
});

// you need to call unlisten if your handler goes out of scope e.g. the component is unmounted
unlisten();

When the debugger panel is open, the drop position of this event may be inaccurate due to a known limitation. To retrieve the correct drop position, please detach the debugger.

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L640

once()

once<T>(event, handler): Promise<UnlistenFn>

Listen to an emitted event on this webview only once.

Type Parameters

Type Parameter
`T`

Parameters

Parameter	Type	Description
`event`	`EventName`	Event name. Must include only alphanumeric characters, `-`, `/`, `:` and `_`.
`handler`	`EventCallback`<`T`>	Event handler.

Returns

Promise<UnlistenFn>

A promise resolving to a function to unlisten to the event. Note that removing the listener is required if your listener goes out of scope e.g. the component is unmounted.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
const unlisten = await getCurrent().once<null>('initialized', (event) => {
  console.log(`Webview initialized!`);
});

// you need to call unlisten if your handler goes out of scope e.g. the component is unmounted
unlisten();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L296

position()

position(): Promise<PhysicalPosition>

The position of the top-left hand corner of the webview’s client area relative to the top-left hand corner of the desktop.

Returns

Promise<PhysicalPosition>

The webview’s position.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
const position = await getCurrentWebview().position();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L397

reparent()

reparent(window): Promise<void>

Moves this webview to the given label.

Parameters

Parameter	Type
`window`	`string` \| `Window` \| `WebviewWindow`

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().reparent('other-window');

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L571

setAutoResize()

setAutoResize(autoResize): Promise<void>

Sets whether the webview should automatically grow and shrink its size and position when the parent window resizes.

Parameters

Parameter	Type
`autoResize`	`boolean`

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().setAutoResize(true);

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L505

setBackgroundColor()

setBackgroundColor(color): Promise<void>

Specify the webview background color.

Platfrom-specific:

macOS / iOS: Not implemented.
Windows:
- On Windows 7, transparency is not supported and the alpha value will be ignored.
- On Windows higher than 7: translucent colors are not supported so any alpha value other than 0 will be replaced by 255

Parameters

Parameter	Type
`color`	`null` \| `Color`

setFocus(): Promise<void>

Bring the webview to front and focus.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().setFocus();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L489

setPosition()

setPosition(position): Promise<void>

Sets the webview position.

Parameters

Parameter	Type	Description
`position`	`LogicalPosition` \| `PhysicalPosition` \| `Position`	The new position, in logical or physical pixels.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrent, LogicalPosition } from '@tauri-apps/api/webview';
await getCurrentWebview().setPosition(new LogicalPosition(600, 500));

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L470

setSize()

setSize(size): Promise<void>

Resizes the webview.

Parameters

Parameter	Type	Description
`size`	`LogicalSize` \| `PhysicalSize` \| `Size`	The logical or physical size.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrent, LogicalSize } from '@tauri-apps/api/webview';
await getCurrentWebview().setSize(new LogicalSize(600, 500));

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L452

setZoom()

setZoom(scaleFactor): Promise<void>

Set webview zoom level.

Parameters

Parameter	Type
`scaleFactor`	`number`

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().setZoom(1.5);

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L554

show()

show(): Promise<void>

Show the webview.

Returns

Promise<void>

A promise indicating the success or failure of the operation.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
await getCurrentWebview().show();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L538

size()

size(): Promise<PhysicalSize>

The physical size of the webview’s client area. The client area is the content of the webview, excluding the title bar and borders.

Returns

Promise<PhysicalSize>

The webview’s size.

Example

import { getCurrentWebview } from '@tauri-apps/api/webview';
const size = await getCurrentWebview().size();

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L414

getAll()

static getAll(): Promise<Webview[]>

Gets a list of instances of Webview for all available webviews.

Returns

Promise<Webview[]>

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L238

getByLabel()

static getByLabel(label): Promise<null | Webview>

Gets the Webview for the webview associated with the given label.

Parameters

Parameter	Type	Description
`label`	`string`	The webview label.

Returns

Promise<null | Webview>

The Webview instance to communicate with the webview or null if the webview doesn’t exist.

Example

import { Webview } from '@tauri-apps/api/webview';
const mainWebview = Webview.getByLabel('main');

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L224

getCurrent()

static getCurrent(): Webview

Get an instance of Webview for the current webview.

Property	Type	Description	Defined in
`acceptFirstMouse?`	`boolean`	Whether clicking an inactive webview also clicks through to the webview on macOS.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L745
`allowLinkPreview?`	`boolean`	on macOS and iOS there is a link preview on long pressing links, this is enabled by default. see https://docs.rs/objc2-web-kit/latest/objc2_web_kit/struct.WKWebView.html#method.allowsLinkPreview	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L849
`backgroundColor?`	`Color`	Set the window and webview background color. Platform-specific: - macOS / iOS: Not implemented. - Windows: - On Windows 7, alpha channel is ignored. - On Windows 8 and newer, if alpha channel is not `0`, it will be ignored. Since 2.1.0	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L821
`backgroundThrottling?`	`BackgroundThrottlingPolicy`	Change the default background throttling behaviour. By default, browsers use a suspend policy that will throttle timers and even unload the whole tab (view) to free resources after roughly 5 minutes when a view became minimized or hidden. This will pause all tasks until the documents visibility state changes back from hidden to visible by bringing the view back to the foreground. ## Platform-specific - Linux / Windows / Android: Unsupported. Workarounds like a pending WebLock transaction might suffice. - iOS: Supported since version 17.0+. - macOS: Supported since version 14.0+. see https://github.com/tauri-apps/tauri/issues/5250#issuecomment-2569380578 Since 2.3.0	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L840
`devtools?`	`boolean`	Whether web inspector, which is usually called browser devtools, is enabled or not. Enabled by default. This API works in debug builds, but requires `devtools` feature flag to enable it in release builds. Platform-specific - macOS: This will call private functions on macOS. - Android: Open `chrome://inspect/#devices` in Chrome to get the devtools window. Wry’s `WebView` devtools API isn’t supported on Android. - iOS: Open Safari > Develop > [Your Device Name] > [Your WebView] to get the devtools window. Since 2.1.0	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L808
`disableInputAccessoryView?`	`boolean`	Allows disabling the input accessory view on iOS. The accessory view is the view that appears above the keyboard when a text input element is focused. It usually displays a view with “Done”, “Next” buttons.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L856
`dragDropEnabled?`	`boolean`	Whether the drag and drop is enabled or not on the webview. By default it is enabled. Disabling it is required to use HTML5 drag and drop on the frontend on Windows.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L741
`focus?`	`boolean`	Whether the webview should have focus or not Since 2.1.0	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L735
`height`	`number`	The initial height.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L723
`incognito?`	`boolean`	Whether or not the webview should be launched in incognito mode. Platform-specific - Android: Unsupported.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L757
`javascriptDisabled?`	`boolean`	Whether we should disable JavaScript code execution on the webview or not.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L844
`proxyUrl?`	`string`	The proxy URL for the WebView for all network requests. Must be either a `http://` or a `socks5://` URL. Platform-specific - macOS: Requires the `macos-proxy` feature flag and only compiles for macOS 14+.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L767
`transparent?`	`boolean`	Whether the webview is transparent or not. Note that on `macOS` this requires the `macos-private-api` feature flag, enabled under `tauri.conf.json > app > macOSPrivateApi`. WARNING: Using private APIs on `macOS` prevents your application from being accepted to the `App Store`.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L729
`url?`	`string`	Remote URL or local file path to open. - URL such as `https://github.com/tauri-apps` is opened directly on a Tauri webview. - data: URL such as `data:text/html,<html>...` is only supported with the `webview-data-url` Cargo feature for the `tauri` dependency. - local file path or route such as `/path/to/page.html` or `/users` is appended to the application URL (the devServer URL on development, or `tauri://localhost/` and `https://tauri.localhost/` on production).	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L715
`useHttpsScheme?`	`boolean`	Sets whether the custom protocols should use `https://<scheme>.localhost` instead of the default `http://<scheme>.localhost` on Windows and Android. Defaults to `false`. #### Note Using a `https` scheme will NOT allow mixed content when trying to fetch `http` endpoints and therefore will not match the behavior of the `<scheme>://localhost` protocols used on macOS and Linux. #### Warning Changing this value between releases will change the IndexedDB, cookies and localstorage location and your app will not be able to access them. Since 2.1.0	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L794
`userAgent?`	`string`	The user agent for the webview.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L749
`width`	`number`	The initial width.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L721
`x`	`number`	The initial vertical position.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L717
`y`	`number`	The initial horizontal position.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L719
`zoomHotkeysEnabled?`	`boolean`	Whether page zooming by hotkeys is enabled Platform-specific: - Windows: Controls WebView2’s `IsZoomControlEnabled` setting. - MacOS / Linux: Injects a polyfill that zooms in and out with `ctrl/command` + `-/=`, 20% in each step, ranging from 20% to 1000%. Requires `webview:allow-set-webview-zoom` permission - Android / iOS: Unsupported.	Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L779

Type Aliases

Color

type Color: [number, number, number] | [number, number, number, number] | object | string;

An RGBA color. Each value has minimum of 0 and maximum of 255.

It can be either a string #ffffff, an array of 3 or 4 elements or an object.

Since

2.0.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/window.ts#L2039

DragDropEvent

type DragDropEvent: object | object | object | object;

The drag and drop event types.

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L42

Functions

getAllWebviews()

function getAllWebviews(): Promise<Webview[]>

Gets a list of instances of Webview for all available webviews.

function getCurrentWebview(): Webview

Get an instance of Webview for the current webview.

Returns

Webview

Since

2.0.0

Source: https://github.com/tauri-apps/tauri/blob/dev/packages/api/src/webview.ts#L53