diff --git a/Cargo.lock b/Cargo.lock
index 6ded61d..8a08eef 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -31,12 +31,27 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "block-buffer"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cce20737498f97b993470a6e536b8523f0af7892a4f928cceb1ac5e52ebe7e"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "clap"
 version = "3.2.20"
@@ -76,6 +91,45 @@ dependencies = [
  "os_str_bytes",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adfbc57365a37acbd2ebf2b64d7e69bb766e2fea813521ed536f5d0520dcf86c"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
+name = "generic-array"
+version = "0.14.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -119,6 +173,17 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
 
+[[package]]
+name = "json5"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96b0db21af676c1ce64250b5f40f3ce2cf27e4e47cb91ed91eb6fe9350b430c1"
+dependencies = [
+ "pest",
+ "pest_derive",
+ "serde",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.132"
@@ -167,6 +232,50 @@ version = "6.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"
 
+[[package]]
+name = "pest"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb779fcf4bb850fbbb0edc96ff6cf34fd90c4b1a112ce042653280d9a7364048"
+dependencies = [
+ "thiserror",
+ "ucd-trie",
+]
+
+[[package]]
+name = "pest_derive"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "502b62a6d0245378b04ffe0a7fb4f4419a4815fce813bd8a0ec89a56e07d67b1"
+dependencies = [
+ "pest",
+ "pest_generator",
+]
+
+[[package]]
+name = "pest_generator"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "451e629bf49b750254da26132f1a5a9d11fd8a95a3df51d15c4abd1ba154cb6c"
+dependencies = [
+ "pest",
+ "pest_meta",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pest_meta"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcec162c71c45e269dfc3fc2916eaeb97feab22993a21bcce4721d08cd7801a6"
+dependencies = [
+ "once_cell",
+ "pest",
+ "sha1",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -292,6 +401,17 @@ dependencies = [
  "unsafe-libyaml",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -324,11 +444,32 @@ version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
 
+[[package]]
+name = "thiserror"
+version = "1.0.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c53f98874615aea268107765aa1ed8f6116782501d18e53d08b471733bea6c85"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8b463991b4eab2d801e724172285ec4195c650e8ec79b149e6c2a8e6dd3f783"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tradaf"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "json5",
  "ron",
  "serde",
  "serde-pickle",
@@ -337,6 +478,18 @@ dependencies = [
  "serde_yaml",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+
+[[package]]
+name = "ucd-trie"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e79c4d996edb816c91e4308506774452e55e95c3c9de07b6729e17e15a5ef81"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.3"
diff --git a/Cargo.toml b/Cargo.toml
index 17618cc..ecfecaf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,7 @@ serde-transcode = "1.1.1"
 #bson = "2.3"
 #ciborium = "0.2"
 serde_json = "1.0"
+json5 = "0.4"
 serde-pickle = "1.0"
 ron = "0.8"
 #toml = "0.5"
diff --git a/examples/shortExample.json5 b/examples/shortExample.json5
new file mode 100644
index 0000000..0e72c64
--- /dev/null
+++ b/examples/shortExample.json5
@@ -0,0 +1,12 @@
+{
+  // comments
+  unquoted: 'and you can quote me on that',
+  singleQuotes: 'I can use "double quotes" here',
+  lineBreaks: "Look, Mom! \
+No \\n's!",
+  hexadecimal: 0xdecaf,
+  leadingDecimalPoint: .8675309, andTrailing: 8675309.,
+  positiveSign: +1,
+  trailingComma: 'in objects', andIn: ['arrays',],
+  "backwardsCompatible": "with JSON",
+}
diff --git a/src/lib.rs b/src/lib.rs
index 2016e5a..4eef973 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -26,6 +26,7 @@ pub enum Input {
     //Bson,
     //Cbor,
     Json,
+    Json5,
     Pickle,
     Ron,
     //Toml
@@ -37,6 +38,7 @@ pub enum Output {
     //Bson,
     //Cbor,
     Json,
+    //Json5, // NOTE: The crate is not notted "(deserialization only)" on the [serde listing](https://serde.rs/#data-formats) but it does not expose a serializer
     Pickle,
     Ron,
     //Toml,
@@ -77,6 +79,16 @@ fn de(opt: &Opt, input: &mut dyn Read, output: &mut dyn Write) {
             let mut deserializer = Deserializer::from_reader(input);
             ser(opt, &mut deserializer, output);
         }
+        Input::Json5 => {
+            use json5::Deserializer;
+
+            // NOTE: Apparently Json5 do not implement `Deserializer` on const?
+            // NOTE: Apparently Json5 do not implement `Deserializer::from_reader` but it can serialise into a writter…
+            let mut buf = String::new();
+            let _buf_size = input.read_to_string(&mut buf).unwrap();
+            let mut deserializer = Deserializer::from_str(&buf).unwrap();
+            ser(opt, &mut deserializer, output);
+        }
         Input::Pickle => {
             use serde_pickle::Deserializer;
 
diff --git a/tests/integration.rs b/tests/integration.rs
index a66359d..12cbc43 100644
--- a/tests/integration.rs
+++ b/tests/integration.rs
@@ -34,3 +34,23 @@ fn ron_to_json() {
 
     assert_eq!(control, out);
 }
+
+#[test]
+fn json5_read_json() {
+    let opt = Opt {
+        input: Input::Json5,
+        output: Output::Json,
+        pretty: true,
+        no_newline: false,
+    };
+
+    let input = example_to_vec("examples/materials.json");
+
+    let mut output = vec![];
+    transcode(opt, &mut input.as_slice(), &mut output);
+    let out = String::from_utf8(output).unwrap();
+
+    let control = example_to_string("examples/materials.json");
+
+    assert_eq!(control, out);
+}