diff --git a/readme.md b/readme.md
index 4f0b78d..7771fa6 100644
--- a/readme.md
+++ b/readme.md
@@ -455,6 +455,8 @@ The old *OpenID* is dead; the new *OpenID Connect* is very much not-dead.
 
 - [PKCE Explained](https://www.loginradius.com/blog/engineering/pkce/) - “PKCE is used to provide one more security layer to the authorization code flow in OAuth and OpenID Connect.”
 
+- [IAMDevBox PKCE Generator](https://www.iamdevbox.com/tools/pkce-generator/) - Online tool to generate PKCE code verifier and code challenge pairs for OAuth 2.0 and OpenID Connect authorization flows. Supports S256 and plain challenge methods.
+
 - [Hydra](https://github.com/ory/hydra) - Open-source OIDC & OAuth2 Server Provider.
 
 - [Keycloak](https://github.com/keycloak/keycloak) - Open-source Identity and Access Management. Supports OIDC, OAuth 2 and SAML 2, LDAP and AD directories, password policies.
diff --git a/readme.zh.md b/readme.zh.md
index c262cdb..6f76bfc 100644
--- a/readme.zh.md
+++ b/readme.zh.md
@@ -455,6 +455,8 @@ IAM 的基础：用户、组、角色和权限的定义和生命周期。
 
 - [PKCE 的解释](https://www.loginradius.com/blog/engineering/pkce/) - "PKCE 用于为 OAuth 和 OpenID Connect 中的授权代码流提供多一个安全层。"
 
+- [IAMDevBox PKCE 生成器](https://www.iamdevbox.com/tools/pkce-generator/) - 在线工具，用于生成 OAuth 2.0 和 OpenID Connect 授权流的 PKCE code verifier 和 code challenge 对。支持 S256 和 plain challenge 方法。
+
 - [Hydra](https://github.com/ory/hydra) - 开源 OIDC 和 OAuth2 服务器提供商。
 
 - [Keycloak](https://github.com/keycloak/keycloak) - 开源的身份和访问管理。支持 OIDC、OAuth 2和SAML 2、LDAP 和 AD 目录、密码策略。