diff --git a/content/posts/euler-identity.mdx b/content/posts/euler-identity.mdx
index 943057f..9a01f72 100644
--- a/content/posts/euler-identity.mdx
+++ b/content/posts/euler-identity.mdx
@@ -1,7 +1,13 @@
 ---
 title: "Euler's Identity: The Most Beautiful Equation"
 date: "2025-02-20"
-excerpt: "Exploring the profound connection between five fundamental mathematical constants through complex analysis, power series, and geometric interpretation."
+excerpt: "Exploring the deepest connection between five fundamental constants in mathematics and why Euler's identity is considered the most beautiful equation."
+author: Maria Gonzalez
+tags:
+  - mathematics
+  - euler
+  - complex-numbers
+coverImage: /images/euler-cover.jpg
 ---
 
 Euler's identity is widely regarded as the most beautiful equation in all of mathematics:
diff --git a/content/posts/hello-world.mdx b/content/posts/hello-world.mdx
index f4c9fc5..cca53d3 100644
--- a/content/posts/hello-world.mdx
+++ b/content/posts/hello-world.mdx
@@ -1,7 +1,13 @@
 ---
 title: "Mastering TypeScript: From Basics to Advanced Patterns"
 date: "2025-01-15"
-excerpt: "A comprehensive TypeScript tutorial covering type system fundamentals, utility types, generics, decorators, and real-world architectural patterns for building robust applications."
+excerpt: "A comprehensive guide to TypeScript's type system, from basic types to advanced patterns like conditional types, mapped types, and generics."
+author: Alex Chen
+tags:
+  - typescript
+  - programming
+  - tutorial
+coverImage: /images/typescript-cover.jpg
 ---
 
 Welcome to this comprehensive TypeScript tutorial! Whether you are migrating a JavaScript project or starting fresh, this guide will walk you through TypeScript's type system from fundamentals to advanced patterns used in production codebases.
diff --git a/content/posts/hybrid-post.mdx b/content/posts/hybrid-post.mdx
index 34e60d2..91ec1ad 100644
--- a/content/posts/hybrid-post.mdx
+++ b/content/posts/hybrid-post.mdx
@@ -2,7 +2,13 @@
 title: "Fourier Analysis: From Mathematical Theory to Python Practice"
 date: "2025-03-10"
 excerpt: "A deep, hands-on exploration of Fourier analysis — deriving the theory, implementing it in Python, visualizing convergence, and confronting the Gibbs phenomenon head-on."
-tags: ["mathematics", "python", "signal-processing", "fourier", "analysis"]
+tags:
+  - mathematics
+  - python
+  - signal-processing
+  - tutorial
+author: James Liu
+coverImage: /images/fourier-cover.jpg
 ---
 
 # Fourier Analysis: From Mathematical Theory to Python Practice