UXP Changelog

Find out what's improved with the latest UXP version, including fixed bugs, new features, and enhancements to existing features. Note that it takes a couple of weeks for new UXP versions to be implemented in future releases of our Creative Cloud apps.

UXP v9.4

New

Added queueMicrotask support, enabling newer JavaScript tooling and modern asynchronous patterns in plugins.
WebView navigation responses now expose HTTP status codes, enabling improved error handling for hosted content.
Expanded CSS text-decoration support for greater compatibility with web standards.
Unhandled JavaScript exceptions in third-party plugins are now captured and reported to improve runtime diagnostics. This is opt-in for now to allow some transition time, via a feature flag in manifest.json:
```
{
  "featureFlags": {
    "uncaughtException": true,
    "unhandledRejection": true
  }
}
```

Fixed

Fixed UNC path handling for WebView src, video src, and video poster attributes on Windows.
Fixed inconsistent dialog resize behavior across different content and size combinations.

UXP v9.3

New

Added support for the video poster attribute (macOS only). Plugins can display a custom image before playback begins or while video content is loading.
Plugin command results are now stringified by default, preventing unexpected undefined return values.
Added support for file:// URLs along with #fragments via shell.openPath() on macOS. Opening file:///…/index.html#endnote-001 now opens the default browser at the exact anchor on macOS, without requiring any page scroll.
Restricted the WebView uxpHost object to the main document. Embedded subframes no longer have access to plugin messaging APIs.

Fixed

Prevented media timeUpdate events from being dispatched while the media player is not playing.

UXP v9.2

New

System Sleep/Awake Events: introduced system sleep and wakeup events in the plugin JS layer for better control over features like video playback.

window.addEventListener("sleep", () => { console.log("System is sleeping"); });
window.addEventListener("awake", () => { console.log("System is awake"); });

UXP v9.1

New

Video timeUpdate Event: the UXP video element now emits a timeUpdate event like the HTML5 video element.
Video Element Audio Support: the UXP video element can now play audio files.
URLSearchParams Module Support: added the URLSearchParams module to UXP.
WebView Drag & Drop Support: added drag and drop between UXP panels and WebView-based panels; WebView can accept drops of various data types from anywhere, bypassing UXP.
Improved Image Loading: multiple views can load the same URL without triggering false error states or visible flicker.
Enriched WebView load error messages: WebViewEvent.message now provides more detailed cause info for better debugging.
WebView improvements:
- Disabled swipe navigation on WebView2 for consistency with macOS WKWebView; all WebView2 gestures (swipe, zoom control, pinch zoom) are now disabled.
- Removed the allow field from permissions.webview config; permissions.webview.allow in the manifest is no longer used.

UXP v9.0.2

Fixed

Ensured that scripts in WebViews are universally injected across all frames, including any nested iframe. This addresses an issue with no-op context menus showing up for iframe in WebViews.
Fixed an issue with UXP Developer Tools (UDT) being unable to establish a connection with the host applications in Debug builds, which impacted developer workflows.
Ensured that the WebView visibility-change script always runs on the plugin's JavaScript thread, fixing a crash across all DVA codebases.

UXP v9.0

Updated

WebView enhancements:
- WebView2 now uses Fluent overlay scrollbars for a modern UI experience.
- requiredPermissions.webview.domains is now optional, simplifying manifest configuration.
SecureStorage methods now follow the Web Storage API spec for error handling.
XMLHttpRequest.readyState is exposed on XMLHttpRequest now for correctness.

UXP v8.4.0

Fixed

Security fix: removed the Authorization header if an HTTP request is redirected to a different origin.
Fixed an issue where \\ was not being allowed as an authority delimiter on Windows.

UXP v8.3.0

Fixed

Stability fixes for video on Windows.

UXP v8.2.0

New

File System Stream Support: added fs.createReadStream support, enabling large file upload streaming without loading the entire file into memory.

Updated

XMLHttpRequest enhancement: added support for standard XMLHttpRequest state variables (UNSENT, OPENED, HEADERS_RECEIVED, LOADING, DONE).
```
XMLHttpRequest.HEADERS_RECEIVED; // 2 (not undefined)
XMLHttpRequest.prototype.OPENED; // 1
new XMLHttpRequest().LOADING; // 3
```
File system improvements: extended the UXP file system to support all valid characters, including special characters like #, improving compatibility with various file-naming conventions.

UXP v8.1.0

New

Support for UXP Plugins in Premiere v25.1 (Beta)
ResizeObserver APIs to observe an element's dimension or border-box, allowing better management of automatic adjustments and providing a performant way of observing size changes of elements.
IntersectionObserver APIs to observe changes in the intersection of a target element with an ancestor element, unblocking cases for lazy loading of assets and facilitating infinite scrolling.
Added support for :first-child and :not(:first-child) pseudo-classes to enhance the existing Web Component support by allowing targeting of the desired elements
Support linear-gradient property with start and end values to align with the web.

Fixed

Fixed discrepancy in default state of enableFillAsCustomAttribute flag (it's true by default now)
Fixed missing translate -> y values via UXP Dev Tool, despite being correctly applied on the elements.

UDT v2.1.0

Supports UXP Plugins for Premiere v25.1 (Beta)

UXP v8.0.1

Breaking Changes

enableFillAsCustomAttribute feature flag, introduced in UXPv7.1.0, will be turned on by default.

Deprecations

Changes to Clipboard
- Clipboard.setContent is deprecated. Please use Clipboard.write instead.
- Clipboard.getContent is deprecated. Please use Clipboard.read instead.
- Passing an object to Clipboard.writeText(object) is deprecated. Please use Clipboard.write(object) instead.
- Clipboard.clearContent is deprecated. Clipboard.writeText("") would be an alternative.
Changes to VideoElement
- Event uxpvideoload in load() is deprecated. Use loadeddata instead.
- Event uxpvideoplay in play() is deprecated. Use ended instead.
- Event uxpvideocomplete in play() is deprecated. Use ended instead.
- Event uxpvideopause in pause() is deprecated. Use pause instead.

New

New components supported in Spectrum Web Components (SWC). More details here.
- sp-asset
- sp-meter
- sp-number-field
- sp-overlay
- sp-quick-actions
- sp-search
- sp-swatch
New command line templates to get started with SWC easily. Find details in this section.
Support for local HTML files in WebView
New CSS capabilities
- scaleX() & scaleY()
- transform-origin
- translate property
- Box-shadow property now supports transform rotate.

New feature flag CSSNextSupport in the manifest.json to gate the new and future CSS capability.

Table
Manifest setting	Description
`featureFlags: {"CSSNextSupport": true}`	Enables all the new CSS features.
`featureFlags: {"CSSNextSupport": ["boxShadow", "transformFunctions", "transformProperties" ]}`	Enables only the named properties in the list.

Note that "enableSWCSupport": true will enable CSSNextSupport by default.

Video enhancements: Support added for Seek Event
Support for Navigator.language API
Support for new HTMLElement APIs - append, prepend and replaceChildren
[Beta] Support for form reset in HTMLFormElement

Updated

Upgraded Spectrum Web Components to v0.37.0. More details here.
UXP Clipboard.writeText() now accepts strings as input to meet standards

UXP v7.4.0

Updated

UXP Alerts (alert, prompt, confirm) have been moved back to beta due to a few inherent instabilities in this feature. While we work on addressing these issues, the feature can be accessed using the feature flag enableAlerts in the manifest.json file. Also, note that UXP alerts will be available only in Plugins and not in scripts.
Wildcards (*) at the top-level domain name are not allowed. Please ensure you revisit the permissions setup in manifest.json for WebView, and network calls XMLHttp fetch
New doc for tracking the mapping between Spectrum widgets and Spectrum Web Components in UXP

Fixed

XMP in Scripts.
Plugin crashes while using fit-content
WebView support for file selector in MacOS
GUID returning hashed empty string
Updated missing docs for pseudo-class defined (Available since UXP v6.0)

UXP v7.3.0

New

GUID for uniquely identifying a Creative Cloud User (Currently Supported only in Photoshop).
Multipart FormData support in Request and Response for fetch
FormData now supports the following APIs
- delete()
- get()
- getAll()
- has()
- keys()
- set()
- values()

Updated

FormData's append now supports Blob as additional parameter.
Spectrum Web Components support in React context is now available for all the 30 components.
- Sample plugin for UXP-SWC plugin in React context can be referred here

Fixed

Tab Navigation not working for several SWC Components is now fixed
Spacebar doesn't work on SWC Button component when reached via TAB navigation.
Support for Alerts in InDesign

UDT v2.0

New

UXP Playground to experiment with APIs. Click on the 'Playground' tab next to 'Developer Workspace' to select an app and get started.

Updated

Plugin actions are surfaced based on the 'Status' of your plugin in the Developer Workspace

UXP v7.2.0

New

Adobe Extensibility Metadata Platform (XMP) support
pointer-events: none CSS property
Support for pseudoElement in getComputedStyle(element, pseudoElement) API

Updated

Spectrum Web Component is promoted to release and has support for additional list of components.
The are updates to the support matrix for Spectrum web components and its variants which is mentioned in the support matrix
swc-uxp-wrappers to be used to consume the components inside UXP. These wrappers are hosted on npmjs
Plugin sample for react is available using SWC.

UXP v7.1.0

New

HTMLElement now supports

Updated

Documentation for shell moved to new location

Fixed

SVGElement: The color of the fill attribute using a CSS variable will resolve as per the variable value. For now, please test this fix by enabling the feature flag in your plugin manifest "featureFlags" : { "enableFillAsCustomAttribute" : true }. This flag will be turned on by default in the next UXP release.

// CSS variable
html {
  --iconColor: yellow;
}

<svg height="100" width="100">
  <circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="var(--iconColor, red)" />
</svg>
// shows a yellow circle

UXP v7.0.0

New

Support for Web Components in UXP Plugins. Various HTML elements and methods have been added to support this feature.
- Classes
  - HTMLSlotElement
  - HTMLTemplateElement
- Methods
Spectrum Web Components (Beta) Support for Adobe SWC.
Several augmentations to the JS API set
- Properties
  - HTMLElement.lang
- Classes added to the global scope
  - TreeWalker
  - NodeFilter
- Methods
New focus events to support React 16
- Focusin Event
- Focusout Event
HTML 2D Canvas Support for Basic Shapes and Styling.
Alerts
Support for pipeThrough and tee in ReadableStream. Refer to Streams for more details
ImageBlob to render an uncompressed image buffer in UXP

Changed

HTMLVideoElement: 'metadata' is the default value for preload attribute
FS API: No need for the file:// protocol

UXP v6.5.0

New

UXP Hybrid plugins
Allow unrestricted relative paths in require from scripts
getEntryWithUrl in LocalFileProvider

UXP v6.4

New

WebView for anels
Path Module APIs
UXP Scripts can run fsapi with full access in localFileSystem

Bugs Fixes

PluginManifest parsing / Load Plugin errors not logged in UDT
Error shown in UDT APP logs on Plugin UnLoad
UXP script : file session tokens are not getting created
Error message and stack are empty in case of reject("error string") executed in script
[Win only]-Volume is being muted automatically for 3rd video in the tutorial while opening the video in Theatre mode
After closing the theatre mode, video's are Overlapping while scrolling up and down in DP
Provide an API to programmatically close dialog in pop-out/theatre mode.
Plugin Data folder shouldn't be created for scripts
Crash on exit
script.setResult("kSuccess") not working
Resource Leaks in Window Dialog on UWP
Privilege plugin fail to add in XD in certain cases
Fixed mouse/keyboard events within Webview in XD v55 and Win 10.

UXP v6.3

New

Blob APIs.
Blob support in Fetch API.
Crypto APIs
UXP Developer Tools v1.7.0 has supports for Debugging UXP Scripts in Photoshop and InDesign, refer here for more details
UXP Developer Tools has new templates in the Create Plugin Dialog. This includes examples for using WebView and Multiple Menus in a Plugin. For more details on Webview refer HTMLWebViewElement module under Global Members/HTML Elements in JavaScript Reference

Bugs Fixes

Plugin cannot open its own folders because version dots are rejected
PS crashes frequently during UDT watch reload
UDT Window / Bring all to Front does not work
UDT console closed when PS crashes or quits
UDT fails to launch with "sign-in required" error
PS crashes with empty <svg> <polygon>
Manifest v5 breaks file permissions dialog
Many stability Fixes and performance improvements