> For the complete documentation index, see [llms.txt](https://guide.geyser.fund/geyser-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.geyser.fund/geyser-docs/product-guides/contribute-on-geyser.md).
# Contribute on Geyser
You can contribute to projects by both donating to projects as well as purchasing products and rewards on their project pages.
#### **Payment methods**
Geyser supports both Lightning and on-chain payments, giving contributors full flexibility.
To stay **KYC-free**, Geyser uses **Boltz Exchange**, a non-custodial third-party service that swaps on-chain donations to Lightning.
Geyser never holds or controls your funds.
Learn how to get your money back in the rare case an on-chain payment fails.
***
#### Contributing to different project types
Contributions to Open Fundraisers are direct, peer-to-peer and final. This means that creators get their money immediately.
Contributions to All-or-Nothing Campaigns
***
#### How contributions work on Geyser
If you're logged in, your contributions will display your profile and connected social accounts. You can also choose to contribute **anonymously**.
Public contributions help others discover valuable projects and build trust within the community - so we recommend you contribute while being logged in.
All contributions - regardless of payment method - appear on the project’s page (right-hand side of the screen).
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#### How to Fund a Project
1. Go to the **project page**.
2. Click **Contribute** on the right-hand side.
3. Enter the amount you want to send.
4. Add a public comment (optional).
5. Choose your preferred payment method:
* **Browser wallet** (e.g., Alby)
* **Lightning**: Scan the QR code or click *Copy lightning invoice* to pay with your wallet
* **On-chain**: Follow the on-chain payment instructions provided here - learn more about [Contribute with Bitcoin](/geyser-docs/product-guides/contribute-on-geyser/contribute-with-bitcoin.md)
***
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