# Link による購入完了率の向上とコスト削減

顧客が希望する決済手段を使用してスピーディーに購入できるようにする

*Link* (Stripe’s digital wallet. It securely saves and autofills customer address and payment details, with support for cards, US bank accounts, BNPLs, and more) is Stripe’s digital wallet. It lets your customers securely save and reuse payment methods for fast checkout. Where available, your customers can pay with cards, bank accounts, [buy‑now‑pay‑later](https://docs.stripe.com/payments/link/klarna.md) options, and other methods. By offering more ways to pay and a streamlined checkout, you can increase conversion—and when customers pay with lower‑cost alternatives to cards, like [Instant Bank Payments](https://docs.stripe.com/payments/link/instant-bank-payments.md) (available exclusively through Link), you can reduce processing costs.

Link confirms all transactions immediately, and successful payments settle to your Stripe balance on the same timeline as card payments, regardless of the funding method.

Customers can make changes to their account, view their purchase history, or reach out to the Link customer support team by visiting [link.com](https://www.link.com). For information about how your payment integration affects Link, see [Link in different payment integrations](https://docs.stripe.com/payments/link/link-payment-integrations.md).

> #### 利用可能な国
> 
> Link isn’t available in India. In Brazil and Thailand, the [Payment Element](https://docs.stripe.com/payments/payment-element.md) doesn’t support Link.
![構築済みの決済ページに Link を追加する](https://b.stripecdn.com/docs-statics-srv/assets/link-in-checkout.2eb9f8d06da3dca74af9b81fa7524049.png)

Add Link to your prebuilt checkout page

## Link authentication 

Here’s how Link authenticates existing customers:

1. Link automatically detects if a customer is enrolled by using their email address, phone number, or browser cookie.
1. 顧客が、1 回限りのパスコードを受け取ってセッションを認証します。
1. After authentication succeeds, Link autofills their card or bank payment details and shipping information.

After a customer enrolls with Link, they can add backup payment methods and change shipping addresses.

Link works with [Checkout](https://docs.stripe.com/payments/checkout.md), [Payment Links](https://docs.stripe.com/payment-links.md), [Web Elements](https://docs.stripe.com/payments/elements.md), [Mobile Elements](https://docs.stripe.com/payments/link/mobile-payment-element-link.md), and [Invoicing](https://docs.stripe.com/invoicing.md). To accept payments using Link, go to your [payment method settings](https://dashboard.stripe.com/settings/payment_methods).

## Link on no-code options 

[Checkout で Link を使用する](https://docs.stripe.com/payments/link/checkout-link.md): Use Link in your prebuilt checkout page, allowing your customers to securely save and reuse their payment information.

[Invoicing での Link の使用](https://docs.stripe.com/payments/link/invoicing.md): Enable Link in the Hosted Invoice Page.

## Link payment methods 

[Link payment methods](https://docs.stripe.com/payments/link/link-payment-methods.md): Accept multiple local and alternative payment methods that are automatically shown to your customers.

[Link対応のKlarna決済](https://docs.stripe.com/payments/link/klarna.md): Enable Klarna on Link as a payment method for your customers. (パブリックプレビュー)

## Link with Elements 

[Payment Element の Link](https://docs.stripe.com/payments/link/payment-element-link.md): Trigger Link in the Payment Element whenever a customer selects a supported payment method.

[Express Checkout Element での Link](https://docs.stripe.com/payments/link/express-checkout-element-link.md): Display Link alongside Apple Pay, Google Pay, and PayPal using the Express Checkout Element.

[Mobile Payment Element の Link](https://docs.stripe.com/payments/link/mobile-payment-element-link.md): Add Link to your native iOS, Android, and React Native apps.

## Link integrations 

[異なる決済システムでの Link の使用](https://docs.stripe.com/payments/link/link-payment-integrations.md): Learn about using Link with dynamic payment methods and other integrations.

[Link を含むカスタムの決済ページを構築](https://docs.stripe.com/payments/link/add-link-elements-integration.md): Use the Payment Intents API with the Link Authentication Element or Payment Element to create a Link-enabled custom checkout page.

[Elements と Link を使用して支払いを事前設定](https://docs.stripe.com/payments/link/save-and-reuse.md): Save your Link customers’ details and charge them later.

## See also

- [Link with Checkout](https://docs.stripe.com/payments/link/checkout-link.md)
- [Link with Elements](https://docs.stripe.com/payments/link/elements-link.md)
- [Link with Invoicing](https://docs.stripe.com/payments/link/invoicing.md)