Added sponsorship feature to nuget.org documentation (#3489)

* Added sponsorship feature to nuget.org documentation along with photos

Author: pranathibora14

docs/nuget-org/TOC.md

@@ -8,6 +8,7 @@
 ## [Package ID prefix reservation](id-prefix-reservation.md)
 ## [Package deprecation](deprecate-packages.md)
 ## [Package readme](package-readme-on-nuget-org.md)
+## [Package sponsorship](package-sponsorship-on-nuget-org.md)
 # Policies
 ## [Data Requests](policies/Data-requests.md)
 ## [Dispute resolution](policies/dispute-resolution.md)

docs/nuget-org/media/sponsorship-add-link.png

@@ -0,0 +1,118 @@
+---
+title: Package sponsorship on NuGet.org
+description: Learn how to add sponsorship links to your NuGet packages and support package maintainers through NuGet.org's sponsorship feature.
+author: pranathibora14
+ms.author: prabora
+ms.date: 10/15/2025
+ms.topic: conceptual
+ai-usage: ai-generated
+---
+
+# Package sponsorship on NuGet.org
+
+The NuGet.org sponsorship feature makes it easier for package consumers to recognize and support the authors behind their favorite packages.
+
+NuGet.org enables package authors to add sponsorship URLs to their packages. These links appear when the "Sponsor" button on the package details page is selected.
+
+
+## Setting up sponsorship for package publishers
+
+### Prerequisites
+
+- You must be the owner or co-owner of a package on NuGet.org
+- Your sponsorship link platform must be from the approved list:
+  - GitHub Sponsors
+  - Patreon
+  - Open Collective
+  - Ko-fi
+  - Tidelift
+  - Liberapay
+
+### Navigate to your package management page
+
+1. Go to [NuGet.org](https://nuget.org) and sign in to your account.
+2. Select your username in the top right corner.
+3. Select **Manage Packages** from the dropdown menu.
+4. Find the package you want to add sponsorship information for and select the edit button.
+
+### Access sponsorship settings
+
+1. On your package management page, scroll down to find the **Sponsorship Links** section.
+2. Select to expand the collapsible **Sponsorship Links** section.
+3. You'll see a form where you can add sponsorship URLs.
+
+   ![Screenshot of the manage package page with the Sponsorship Links section](media/sponsorship-section-manage-package-page.png)
+
+### Add your sponsorship URLs
+
+1. Enter your sponsorship URL in the text field:
+   - Example: `https://github.com/sponsors/yourusername`
+   - Example: `https://www.patreon.com/yourusername`
+
+   ![Screenshot of the sponsorship URL form with example URL filled in](media/sponsorship-add-link.png)
+
+2. Select the **Add** button.
+3. The system automatically validates that your URL is from an approved platform.
+4. If any URLs are invalid or from non-approved platforms, you'll see error messages to correct them. Otherwise, you'll see a confirmation message that your sponsorship link has been saved.
+
+   ![Screenshot of a URL from a platform that is not approved](media/sponsorship-link-error-manage-package.png)
+
+5. Each added sponsorship URL will have a **Remove** button next to it if you need to delete it.
+6. You can add up to 10 different sponsorship URLs per package ID.
+
+### Verify your sponsorship URLs display correctly
+
+1. Navigate to your package's public page on NuGet.org.
+2. Look for the **Sponsor** button in the package details **About** section.
+3. Select the **Sponsor** button to test that your URLs appear correctly in the popup.
+
+   ![Screenshot of a package details page with the sponsorship links popup open](media/sponsorship-display-links.png)
+
+## Finding and supporting packages
+
+### Identify packages that need sponsorship
+
+1. Browse to any package page on NuGet.org.
+2. Look for packages displaying a **Sponsor** button in the package details section.
+3. The **Sponsor** button indicates that the package maintainer is seeking financial support.
+
+   ![Screenshot of a package details page with a Sponsor button](media/sponsorship-button-package-details-page.png)
+
+### View available sponsorship options
+
+1. Select the **Sponsor** button on the package page.
+2. A popup window appears showing all available sponsorship links for that package.
+
+   ![Screenshot of a package details page with the sponsorship links popup open](media/sponsorship-display-links.png)
+
+### Choose your preferred sponsorship platform
+
+1. Review the available sponsorship options in the popup.
+2. Select your preferred platform to be redirected to the external sponsorship page.
+3. The link opens in a new tab or window, keeping the NuGet package page open.
+
+> [!IMPORTANT]
+> These links take you to third-party platforms. Microsoft isn't affiliated with or responsible for the content or practices of third-party platforms, and we don't endorse them. Microsoft reserves the right to remove any allowed third-party platforms.
+
+## Frequently asked questions
+
+**Can I add sponsorship information to older versions of my package?**
+
+Yes! Sponsorship information is managed at the package ID level, so it automatically applies to all versions of your package, including previously published versions.
+
+**What happens if my sponsorship platform URL changes?**
+
+You can update your sponsorship URLs anytime through the package management page. Changes take effect immediately across all versions.
+
+**Can I see analytics on how many people selected my sponsorship links?**
+
+No, NuGet.org doesn't track sponsorship link selections. You'll need to check analytics on your sponsorship platform directly.
+
+**Can I add custom sponsorship platforms not on the approved list?**
+
+Currently, only the approved list of platforms is supported. This helps ensure security and legitimacy of sponsorship links. If you'd like to request a new platform to be added to the approved list, you can open an issue on the [NuGet Gallery repository](https://github.com/NuGet/NuGetGallery/issues).
+
+**Does NuGet.org store my financial information?**
+
+No personal or financial data is stored by NuGet.org. All transactions occur on secure external platforms that a maintainer chooses for sponsoring their packages.
+