diff --git a/book.toml b/book.toml
index 9708038..aa148fb 100644
--- a/book.toml
+++ b/book.toml
@@ -15,4 +15,8 @@ no-section-label = true
 additional-css = ["custom.css"]
 
 [output.html.redirect]
+"/napi/README.html" = "../napi/index.html"
+"/oxc/README.html" = "../oxc/index.html"
 "/oxc-resolver/README.html" = "../oxc-resolver/index.html"
+"/rolldown/README.html" = "../rolldown/index.html"
+"/rust/README.html" = "../rust/index.html"
diff --git a/src/oxc-resolver/README.md b/src/oxc-resolver/README.md
index 3fd9bc6..27f3ac4 100644
--- a/src/oxc-resolver/README.md
+++ b/src/oxc-resolver/README.md
@@ -22,3 +22,5 @@ Those resolving rules are applied, taking in account:
   - `package.json#module`
 
 And a lot of other things that can alter the resolution algorithm.
+
+This crate is widely used by [`rolldown_resolver`](../rolldown/README.md#rolldown_resolver).
diff --git a/src/rolldown/README.md b/src/rolldown/README.md
index abe031e..5434c9a 100644
--- a/src/rolldown/README.md
+++ b/src/rolldown/README.md
@@ -126,3 +126,15 @@ This is the plugin in charge of resolving the paths of the imports, which is a v
       - however, the `type` field of the `package.json` may affect the resolution (`module`, `commonjs`)
 
 <a href="https://github.com/rolldown/rolldown/tree/main/crates/rolldown_resolver" title="Source Code of rolldown_resolver">📄</a>
+
+## rolldown_rstr
+
+Exposes `rolldown_rstr::Rstr` which is a thin wrapper over [`oxc::span::CompactStr`](https://github.com/oxc-project/oxc/blob/main/crates/oxc_span/src/compact_str.rs), which is a wrapper over the [compact_str](https://crates.io/crates/compact_str) crate.
+
+> A memory efficient string type that can store up to 24* bytes on the stack.
+>
+> A `CompactString` is a more memory efficient string type, that can store smaller strings on the stack, and transparently stores longer strings on the heap (aka a small string optimization). It can mostly be used as a drop in replacement for `String` and are particularly useful in parsing, deserializing, or any other application where you may have smaller strings.
+
+`rolldown_rstr::Rstr` is used in many places in the project.
+
+<a href="https://github.com/rolldown/rolldown/tree/main/crates/rolldown_rstr" title="Source Code of rolldown_rstr">📄</a>
diff --git a/src/rust/README.md b/src/rust/README.md
index 44356ce..d97ad12 100644
--- a/src/rust/README.md
+++ b/src/rust/README.md
@@ -6,3 +6,4 @@ Some rust specifics
 - [`std::sync::LazyLock`](https://doc.rust-lang.org/beta/std/sync/struct.LazyLock.html) - A value which is initialized on the first access.
 - [`string_wizard::MagicString`](https://docs.rs/string_wizard/0.0.22/string_wizard/struct.MagicString.html) / [`magic-string`](https://github.com/Rich-Harris/magic-string)
   - performant updates on large strings (like source-maps)
+- [compact_str](https://crates.io/crates/compact_str) - check [rolldown_rstr](../rolldown/README.md#rolldown_resolver)