## Summary of the Pull Request Adds the **Extension Gallery** to Command Palette — a built-in page where users can discover, browse, and install community extensions without leaving the app. https://github.com/user-attachments/assets/e4565333-b970-4085-9e40-5cfd207e533b ## How it works ### 1. The extension author's side Extensions are listed in the external repo **[`microsoft/CmdPal-Extensions`](https://github.com/microsoft/CmdPal-Extensions)**. To get an extension into the in-app gallery, an author opens a PR there that adds a single entry to `extensions.json`. Nothing in PowerToys itself needs to change. A typical entry looks like: ```json { "id": "contoso.sample", "title": "Sample Extension", "description": "Short blurb shown in the list and detail view.", "author": { "name": "Contoso", "url": "https://github.com/contoso" }, "homepage": "https://github.com/contoso/sample", "iconUrl": "https://.../icon.png", "screenshotUrls": ["https://.../screenshot-1.png"], "tags": ["sample"], "installSources": [ { "type": "winget", "id": "Contoso.SampleExtension" }, { "type": "msstore", "id": "9P..." }, { "type": "url", "uri": "https://github.com/contoso/sample/releases/latest" } ], "detection": { "packageFamilyName": "Contoso.SampleExtension_8wekyb..." } } ``` - `id`, `title`, `description`, `author.name`, and at least one `installSources` entry are required; everything else is optional. - `installSources` can mix and match `winget` / `msstore` / `url`. The gallery shows an install button for the first source it can handle (WinGet preferred) and exposes any remaining sources as links. - `detection.packageFamilyName` lets CmdPal recognise an already-installed packaged extension before any WinGet lookup resolves, so the "Installed" badge appears instantly. Once the PR is merged into `CmdPal-Extensions`, every running copy of CmdPal picks the new entry up the next time its feed cache expires (within 4 hours) or when the user clicks **Refresh**. ### 2. What CmdPal does with it `ExtensionGalleryService` (in `Microsoft.CmdPal.Common`) owns the whole pipeline: 1. **Resolve the feed URL.** Default is `https://raw.githubusercontent.com/microsoft/CmdPal-Extensions/refs/heads/main/extensions.json`. A hidden setting (`GalleryFeedUrl`) lets developers point at a custom URL or a `file://` path for local testing. 2. **Fetch** the feed through `ExtensionGalleryHttpClient`, which wraps `HttpCachingClient` — a conditional-GET + on-disk cache layer built on `HttpClient` (ETag / `If-None-Match`, 30 s timeout, UA `PowerToys-CmdPal/1.0`). 3. **Parse** with the source-generated `GallerySerializationContext` into a strongly-typed `GalleryRemoteIndex` (`{ "extensions": [ ... ] }`). Entries without an `id` are dropped. 4. **Normalize** relative `iconUrl` / `screenshotUrls` against the feed URL (useful for local `file://` feeds). 5. **Localize icons.** Each HTTP icon URL is pulled through the same cache and rewritten to a local `file://` URI before the view model binds to it, so the list renders instantly on subsequent loads and works offline. 6. **Prune** cached resources that are no longer referenced, but only after a successful forced refresh. The gallery page itself is built on top of `ExtensionGalleryViewModel`, with `ExtensionGalleryItemViewModel` handling per-entry concerns — install/update/uninstall (via the shared WinGet service), installed-state detection, and joining in-flight install progress so the global `WinGetOperationsButton` in the top bar stays in sync. ### 3. Caching + offline behaviour The cache lives under `ApplicationData.Current.LocalCacheFolder\GalleryCache\` when CmdPal runs packaged, or `%LOCALAPPDATA%\Microsoft\PowerToys\Microsoft.CmdPal\Cache\GalleryCache\` when unpackaged. | Resource | TTL | |-----------------|----------| | `extensions.json` feed | 4 hours | | Icons (per URL) | 24 hours | Each fetch returns a `GalleryFetchResult` whose flags drive the UI: - `FromCache` — cache was still fresh, no network call was made. - `UsedFallbackCache` — network failed; the last-known-good cached copy was served instead. The page shows a "showing cached data" info bar. - `RateLimited` — origin returned `429` and no fallback was available. The page shows a rate-limit error. `RefreshAsync` (wired up to the gallery's refresh button) forces a fresh conditional GET, then prunes any cached files that the new feed no longer references. ### 4. WinGet install flow - `installSources[type=winget].id` is handed to the shared WinGet service for install/update/uninstall. - In-flight operations are surfaced by `WinGetOperationsButton` in the top bar with per-operation progress. - `detection.packageFamilyName` is consulted first so that the gallery can show "Installed" / "Update available" without waiting on WinGet metadata. ### Top-level command cleanup - Removed the separate "Find extensions from WinGet" and "Find extensions from the Store" top-level commands — the gallery replaces both. - Renamed the gallery command to **"Find and install Command Palette extensions"** and gave it the extensions puzzle-piece icon. ## PR Checklist - [ ] **Communication:** I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected - [ ] **Tests:** Added/updated and all pass - [ ] **Localization:** All end-user-facing strings can be localized - [ ] **Dev docs:** Added/updated - [ ] **New binaries:** Added on the required places - [ ] [JSON for signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json) for new binaries - [ ] [WXS for installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs) for new binaries and localization folder - [ ] [YML for CI pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml) for new test projects - [ ] [YML for signed pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml) - [ ] **Documentation updated:** If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys) and link it here: #xxx ## New projects / areas | Area | What | |------|------| | Microsoft.CmdPal.Common | Gallery models, `ExtensionGalleryService` (fetch + cache), HTTP caching layer (`HttpCachingClient`, `FileSystemHttpResourceCacheStore`), WinGet service abstractions and implementations | | Microsoft.CmdPal.UI.ViewModels | `ExtensionGalleryViewModel`, `ExtensionGalleryItemViewModel`, WinGet operation view models, gallery sort options | | Microsoft.CmdPal.UI | `ExtensionGalleryPage.xaml`, `ExtensionGalleryItemPage.xaml`, `IconCarouselControl`, `WinGetOperationsButton`, service registrations | | Microsoft.CmdPal.Ext.WinGet | Streamlined — removed the two redundant "find extensions" top-level commands, kept the general WinGet search page | | Tests | Unit tests for gallery service, gallery view models, WinGet services | | Docs | [`doc/devdocs/modules/cmdpal/extension-gallery/extension-gallery.md`](https://github.com/microsoft/PowerToys/blob/dev/jpolasek/f/46628-cmdpal-extension-gallery/doc/devdocs/modules/cmdpal/extension-gallery/extension-gallery.md) — dev reference for the runtime, caching, and feed shape | ## Validation Steps Performed - Gallery loads and displays extensions from the remote index - Search, sort, and filtering work as expected - WinGet install/update/uninstall flow works end-to-end with progress tracking - Loading state correctly hides all content until data is fetched - Offline / cache-fallback path surfaces the info bar as expected - Spell-check CI workflow passes --------- Co-authored-by: Niels Laute <niels.laute@live.nl> Co-authored-by: niels9001 <9866362+niels9001@users.noreply.github.com>
Microsoft PowerToys
Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks.
Installation · Documentation · Blog · Release notes
🔨 Utilities
PowerToys includes over 30 utilities to help you customize and optimize your Windows experience:
📦 Installation
For detailed installation instructions and system requirements, visit the installation docs.
But to get started quickly, choose one of the installation methods below:
Download the .exe file from GitHub
Go to the PowerToys GitHub releases, scroll down and select Assets to reveal the installation files, and choose the one that matches your architecture and install scope. For most devices, that would be x64 per-user.
WinGet
Download PowerToys from [WinGet](https://github.com/microsoft/winget-cli#installing-the-client). Updating PowerToys via winget will respect the current PowerToys installation scope. To install PowerToys, run the following command from the command line / PowerShell:
- User scope installer (default)
winget install Microsoft.PowerToys -s winget
- Machine-wide scope installer
winget install --scope machine Microsoft.PowerToys -s winget
Other methods
There are [community driven install methods](https://learn.microsoft.com/windows/powertoys/install#community-driven-install-tools) such as Chocolatey and Scoop. If these are your preferred install solutions, you can find the install instructions there.
✨ What's new?
To see what's new, check out the release notes.
🛣️ Roadmap
We are planning some nice new features and improvements for the next releases – a brand-new Shortcut Guide experience, ensuring it's easier to find and install Command Palette extensions and so much more! Stay tuned for v0.100!
❤️ PowerToys Community
The PowerToys team is extremely grateful to have the support of an amazing active community. The work you do is incredibly important. PowerToys wouldn't be nearly what it is today without your help filing bugs, updating documentation, guiding the design, or writing features. We want to say thank you and take time to recognize your work. Your contributions and feedback improve PowerToys month after month!
Contributing
This project welcomes contributions of all types. Besides coding features / bug fixes, other ways to assist include spec writing, design, documentation, and finding bugs. We are excited to work with the power user community to build a set of tools for helping you get the most out of Windows. We ask that before you start work on a feature that you would like to contribute, please read our Contributor's Guide. We would be happy to work with you to figure out the best approach, provide guidance and mentorship throughout feature development, and help avoid any wasted or duplicate effort. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you grant us the rights to use your contribution and that you have permission to do so. For guidance on developing for PowerToys, please read the developer docs for a detailed breakdown. This includes how to setup your computer to compile.
Code of conduct
This project has adopted the Microsoft Open Source Code of Conduct.
Privacy statement
The application logs basic diagnostic data (telemetry). For more privacy information and what we collect, see our PowerToys Data and Privacy documentation.

