diff --git a/Cargo.lock b/Cargo.lock
index bf4b3e82..77470651 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -214,6 +214,15 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
+[[package]]
+name = "document-features"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e493c573fce17f00dcab13b6ac057994f3ce17d1af4dc39bfd482b83c6eb6157"
+dependencies = [
+ "litrs",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.1"
@@ -364,6 +373,12 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "litrs"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9275e0933cf8bb20f008924c0cb07a0692fe54d8064996520bf998de9eb79aa"
+
 [[package]]
 name = "log"
 version = "0.4.17"
@@ -607,6 +622,7 @@ dependencies = [
  "base64 0.21.0",
  "chrono",
  "doc-comment",
+ "document-features",
  "expect-test",
  "fnv",
  "glob",
diff --git a/serde_with/Cargo.toml b/serde_with/Cargo.toml
index 6b2df0f4..6ec23cdb 100644
--- a/serde_with/Cargo.toml
+++ b/serde_with/Cargo.toml
@@ -24,42 +24,90 @@ include = ["src/**/*", "tests/**/*", "LICENSE-*", "README.md", "CHANGELOG.md"]
 maintenance = {status = "actively-developed"}
 
 # When adding new features update the documentation in feature-flags.md
+# The features are documented using https://docs.rs/document-features
+# lib.rs has support for generating the documentation from the feature flags.
+#   https://users.rust-lang.org/t/new-features-on-lib-rs/98560
 [features]
 default = ["std", "macros"]
 
-alloc = [
-    "serde/alloc",
+#! `serde_with` is fully `no_std` compatible, by depending on it with `default-features = false`.
+#! Support for `alloc` and `std` can be enabled with the respective features.
+#! Some features require `alloc` or `std` support and might not work in a `no_std` environment.
 
-    "base64?/alloc",
-    "chrono_0_4?/alloc",
-    "hex?/alloc",
-    "serde_json?/alloc",
-    "time_0_3?/alloc",
-]
-std = [
-    "alloc",
-    "serde/std",
-
-    # Enables `Local` type
-    "chrono_0_4?/clock",
-    "chrono_0_4?/std",
-    "indexmap_1?/std",
-    "indexmap_2?/std",
-    "time_0_3?/serde-well-known",
-    "time_0_3?/std",
-]
+## Enable support for types from the `alloc` crate when running in a `no_std` environment.
+alloc = ["serde/alloc", "base64?/alloc", "chrono_0_4?/alloc", "hex?/alloc", "serde_json?/alloc", "time_0_3?/alloc"]
+## Enables support for various types from the std library.
+## This will enable `std` support in all dependencies too.
+## The feature enabled by default and also enables `alloc`.
+std = ["alloc", "serde/std", "chrono_0_4?/clock", "chrono_0_4?/std", "indexmap_1?/std", "indexmap_2?/std", "time_0_3?/serde-well-known", "time_0_3?/std"]
+
+#! # Documentation
+#!
+#! The following features enhance the documentation of `serde_with`.
+
+## The `guide` feature enables inclusion of this user guide.
+## The feature only changes the rustdoc output and enables no other effects.
+guide = ["dep:doc-comment", "dep:document-features", "macros", "std"]
 
+#! # Features
+#!
+#! The following features enable support for types from other crates or enable additional functionality, that requires further dependencies to be pulled in.
+#! These features are disabled by default to miniminze the amount of required dependencies.
+
+## The feature enables serializing data in base64 format.
 base64 = ["dep:base64", "alloc"]
+## Deprecated feature name. Use `chrono_0_4` instead.
 chrono = ["chrono_0_4"]
+## The feature enables integration of `chrono` v0.4 specific conversions.
+## This includes support for the timestamp and duration types.
+## More features are available in combination with `alloc` or `std`.
+## The legacy feature name `chrono` is still available for v1 compatability.
+##
+## This pulls in `chrono` v0.4 as a dependency.
 chrono_0_4 = ["dep:chrono_0_4"]
-guide = ["dep:doc-comment", "macros", "std"]
-hex = ["dep:hex", "alloc"]
+## The feature enables `hashbown::{HashMap, HashSet}` as supported containers.
+##
+## This pulls in `hashbrown` v0.14 as a dependency.
+## It enables the `alloc` feature.
+## Some functionality is only available when `std` is enabled too.
 hashbrown_0_14 = ["dep:hashbrown_0_14", "alloc"]
+## The feature enables serializing data in hex format.
+##
+## This pulls in `hex` as a dependency.
+## It enables the `alloc` feature.
+hex = ["dep:hex", "alloc"]
+## Deprecated feature name. Use `indexmap_1` instead.
 indexmap = ["indexmap_1"]
+## The feature enables implementations of `indexmap` v1 specific checks.
+## This includes support for checking duplicate keys and duplicate values.
+## The legacy feature name `indexmap` is still available for v1 compatability.
+##
+## This pulls in `indexmap` v1 as a dependency.
+## It enables the `alloc` feature.
+## Some functionality is only available when `std` is enabled too.
 indexmap_1 = ["dep:indexmap_1", "alloc"]
+## The feature enables implementations of `indexmap` v2 specific checks.
+## This includes support for checking duplicate keys and duplicate values.
+##
+## This pulls in `indexmap` v2 as a dependency.
+## It enables the `alloc` feature.
+## Some functionality is only available when `std` is enabled too.
 indexmap_2 = ["dep:indexmap_2", "alloc"]
+## The feature enables JSON conversions from the `json` module.
+##
+## This pulls in `serde_json` as a dependency.
+## It enables the `alloc` feature.
 json = ["dep:serde_json", "alloc"]
+## The feature enables all helper macros and derives.
+## It is enabled by default, since the macros provide a usability benefit, especially for `serde_as`.
+##
+## This pulls in `serde_with_macros` as a dependency.
 macros = ["dep:serde_with_macros"]
+## The feature enables integration of `time` v0.3 specific conversions.
+## This includes support for the timestamp and duration types.
+##
+## This pulls in `time` v0.3 as a dependency.
+## Some functionality is only available when `alloc` or `std` is enabled too.
 time_0_3 = ["dep:time_0_3"]
 
 # When adding new optional dependencies update the documentation in feature-flags.md
@@ -67,6 +115,7 @@ time_0_3 = ["dep:time_0_3"]
 base64 = {version = "0.21.0", optional = true, default-features = false}
 chrono_0_4 = {package = "chrono", version = "0.4.20", optional = true, default-features = false, features = ["serde"]}
 doc-comment = {version = "0.3.3", optional = true}
+document-features = {version = "0.2.7", optional = true}
 hashbrown_0_14 = {package = "hashbrown", version = "0.14.0", optional = true, default-features = false, features = ["serde"]}
 hex = {version = "0.4.3", optional = true, default-features = false}
 indexmap_1 = {package = "indexmap", version = "1.8", optional = true, default-features = false, features = ["serde-1"]}
diff --git a/serde_with/src/guide/feature_flags.md b/serde_with/src/guide/feature_flags.md
deleted file mode 100644
index 201625d1..00000000
--- a/serde_with/src/guide/feature_flags.md
+++ /dev/null
@@ -1,107 +0,0 @@
-# Available Feature Flags
-
-This crate has the following features which can be enabled.
-Each entry will explain the feature in more detail.
-
-`serde_with` is fully `no_std` compatible.
-Using it in a `no_std` environment requires using `default-features = false`, since `std` is enabled by default.
-
-1. [`alloc`](#alloc)
-2. [`std` (default)](#std-default)
-3. [`base64`](#base64)
-4. [`chrono_0_4`](#chrono_0_4)
-5. [`guide`](#guide)
-6. [`hashbrown_0_14`](#hashbrown_0_14)
-7. [`hex`](#hex)
-8. [`indexmap_1`](#indexmap_1)
-9. [`indexmap_2`](#indexmap_2)
-10. [`json`](#json)
-11. [`macros` (default)](#macros-default)
-12. [`time_0_3`](#time_0_3)
-
-## `alloc`
-
-Enable support for types from the `alloc` crate when running in a `no_std` environment.
-
-## `std` (default)
-
-Enables support for various types from the std library.
-This will enable `std` support in all dependencies too.
-The feature enabled by default and also enables `alloc`.
-
-## `base64`
-
-The `base64` feature enables serializing data in base64 format.
-
-This pulls in `base64` as a dependency.
-It enables the `alloc` feature.
-
-## `chrono_0_4`
-
-The `chrono_0_4` feature enables integration of `chrono_0_4` specific conversions.
-This includes support for the timestamp and duration types.
-More features are available in combination with `alloc` or `std`.
-The legacy feature name `chrono` is still available for v1 compatability.
-
-This pulls in `chrono` v0.4 as a dependency.
-
-## `guide`
-
-The `guide` feature enables inclusion of this user guide.
-The feature only changes the rustdoc output and enables no other effects.
-
-## `hashbrown_0_14`
-
-The `hashbrown_0_14` feature enables `hashbown::{HashMap, HashSet}` as supported containers.
-
-This pulls in `hashbrown` v0.14 as a dependency.
-It enables the `alloc` feature.
-Some functionality is only available when `std` is enabled too.
-
-## `hex`
-
-The `hex` feature enables serializing data in hex format.
-
-This pulls in `hex` as a dependency.
-It enables the `alloc` feature.
-
-## `indexmap_1`
-
-The `indexmap_1` feature enables implementations of `indexmap` v1 specific checks.
-This includes support for checking duplicate keys and duplicate values.
-The legacy feature name `indexmap` is still available for v1 compatability.
-
-This pulls in `indexmap` v1 as a dependency.
-It enables the `alloc` feature.
-Some functionality is only available when `std` is enabled too.
-
-## `indexmap_2`
-
-The `indexmap_2` feature enables implementations of `indexmap` v2 specific checks.
-This includes support for checking duplicate keys and duplicate values.
-
-This pulls in `indexmap` v2 as a dependency.
-It enables the `alloc` feature.
-Some functionality is only available when `std` is enabled too.
-
-## `json`
-
-The `json` features enables JSON conversions from the `json` module.
-
-This pulls in `serde_json` as a dependency.
-It enables the `alloc` feature.
-
-## `macros` (default)
-
-The `macros` features enables all helper macros and derives.
-It is enabled by default, since the macros provide a usability benefit, especially for `serde_as`.
-
-This pulls in `serde_with_macros` as a dependency.
-
-## `time_0_3`
-
-The `time_0_3` enables integration of `time` v0.3 specific conversions.
-This includes support for the timestamp and duration types.
-
-This pulls in `time` v0.3 as a dependency.
-Some functionality is only available when `alloc` or `std` is enabled too.
diff --git a/serde_with/src/guide/feature_flags.rs b/serde_with/src/guide/feature_flags.rs
new file mode 100644
index 00000000..07ca2673
--- /dev/null
+++ b/serde_with/src/guide/feature_flags.rs
@@ -0,0 +1,3 @@
+//! # Available Feature Flags
+//!
+#![doc = document_features::document_features!()]
diff --git a/serde_with/src/lib.rs b/serde_with/src/lib.rs
index 8a51068e..8b8c2643 100644
--- a/serde_with/src/lib.rs
+++ b/serde_with/src/lib.rs
@@ -375,7 +375,7 @@ macro_rules! generate_guide {
 #[cfg(feature = "guide")]
 generate_guide! {
     pub mod guide {
-        pub mod feature_flags;
+        @code pub mod feature_flags;
         pub mod serde_as;
         pub mod serde_as_transformations;
     }