diff --git a/Cargo.lock b/Cargo.lock
index 9bb4eba7..450d44fb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -187,7 +187,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -634,7 +634,7 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
  "version_check",
 ]
 
@@ -651,18 +651,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
@@ -800,7 +800,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -811,22 +811,22 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "serde"
-version = "1.0.145"
+version = "1.0.198"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
+checksum = "9846a40c979031340571da2545a4e5b7c4163bdae79b301d5f86d03979451fcc"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.145"
+version = "1.0.198"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81fa1584d3d1bcacd84c277a0dfe21f5b0f6accf4a23d04d4c6d61f1af522b4c"
+checksum = "e88edab869b01783ba905e7d0153f9fc1a6505a96e4ad3018011eedb838566d9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.60",
 ]
 
 [[package]]
@@ -837,7 +837,7 @@ checksum = "85bf8229e7920a9f636479437026331ce11aa132b4dde37d121944a44d6e5f3c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.99",
 ]
 
 [[package]]
@@ -891,6 +891,7 @@ dependencies = [
  "normalize-line-endings",
  "os_pipe",
  "regex",
+ "serde",
  "serde_json",
  "similar",
  "snapbox-macros",
@@ -924,6 +925,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "909518bc7b1c9b779f1bbf07f2929d35af9f0f37e47c6e9ef7f9dddc1e1821f3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
diff --git a/crates/snapbox/Cargo.toml b/crates/snapbox/Cargo.toml
index 954330c3..a12a73e5 100644
--- a/crates/snapbox/Cargo.toml
+++ b/crates/snapbox/Cargo.toml
@@ -46,7 +46,7 @@ examples = ["dep:escargot"]
 regex = ["dep:regex"]
 
 ## Snapshotting of json
-json = ["structured-data", "dep:serde_json"]
+json = ["structured-data", "dep:serde_json", "dep:serde"]
 ## Snapshotting of term styling
 term-svg = ["structured-data", "dep:anstyle-svg"]
 ## Snapshotting of structured data
@@ -97,6 +97,7 @@ document-features = { version = "0.2.6", optional = true }
 serde_json = { version = "1.0.85", optional = true}
 anstyle-svg = { version = "0.1.3", optional = true }
 regex = { version = "1.10.4", optional = true, default-features = false, features = ["std"] }
+serde = { version = "1.0.198", optional = true }
 
 [target.'cfg(windows)'.dependencies]
 windows-sys = { version = "0.52.0", features = ["Win32_Foundation"], optional = true }
diff --git a/crates/snapbox/src/data/mod.rs b/crates/snapbox/src/data/mod.rs
index c41f1e4a..bc67e650 100644
--- a/crates/snapbox/src/data/mod.rs
+++ b/crates/snapbox/src/data/mod.rs
@@ -42,6 +42,35 @@ impl<D: std::fmt::Debug> ToDebug for D {
     }
 }
 
+/// Capture the serde representation of a value
+///
+/// ```rust,no_run
+/// use snapbox::IntoJson as _;
+///
+/// fn some_function() -> usize {
+///     // ...
+/// # 5
+/// }
+///
+/// let actual = some_function();
+/// let expected = snapbox::str![["5"]];
+/// snapbox::assert_eq(actual.into_json(), expected);
+/// ```
+#[cfg(feature = "json")]
+pub trait IntoJson {
+    fn into_json(self) -> Data;
+}
+
+#[cfg(feature = "json")]
+impl<S: serde::Serialize> IntoJson for S {
+    fn into_json(self) -> Data {
+        match serde_json::to_value(self) {
+            Ok(value) => Data::json(value),
+            Err(err) => Data::error(err.to_string(), DataFormat::Json),
+        }
+    }
+}
+
 /// Convert to [`Data`] with modifiers for `expected` data
 pub trait IntoData: Sized {
     /// Remove default [`filters`][crate::filters] from this `expected` result
@@ -215,7 +244,9 @@ pub(crate) enum DataInner {
 /// See also
 /// - [`str!`] for inline snapshots
 /// - [`file!`] for external snapshots
+/// - [`ToString`] for verifying a `Display` representation
 /// - [`ToDebug`] for verifying a debug representation
+/// - [`IntoJson`] for verifying the serde representation
 /// - [`IntoData`] for modifying `expected`
 impl Data {
     /// Mark the data as binary (no post-processing)
diff --git a/crates/snapbox/src/lib.rs b/crates/snapbox/src/lib.rs
index ef6f6ce8..4dcbeecb 100644
--- a/crates/snapbox/src/lib.rs
+++ b/crates/snapbox/src/lib.rs
@@ -113,6 +113,8 @@ pub use action::DEFAULT_ACTION_ENV;
 pub use assert::Assert;
 pub use data::Data;
 pub use data::IntoData;
+#[cfg(feature = "json")]
+pub use data::IntoJson;
 pub use data::ToDebug;
 pub use error::Error;
 pub use filters::Redactions;
@@ -123,6 +125,8 @@ pub type Result<T, E = Error> = std::result::Result<T, E>;
 /// Easier access to common traits
 pub mod prelude {
     pub use crate::IntoData;
+    #[cfg(feature = "json")]
+    pub use crate::IntoJson;
     pub use crate::ToDebug;
 }