diff --git a/docs/pages/how-to/transform-input.md b/docs/pages/how-to/transform-input.md
index 40ec5539..a49c0237 100644
--- a/docs/pages/how-to/transform-input.md
+++ b/docs/pages/how-to/transform-input.md
@@ -1,6 +1,6 @@
 # Transforming input
 
-Any source can be given to the mapper, be it an array, some json, yaml or even a
+Any source can be given to the mapper, be it an array, some JSON, YAML or even a
 file:
 
 ```php
@@ -30,6 +30,20 @@ $mapper->map(
 );
 ```
 
+!!! info
+
+    JSON or YAML given to a source may be invalid, in which case an exception 
+    can be caught and manipulated.
+
+    ```php
+    try {
+        $source = \CuyZ\Valinor\Mapper\Source\Source::json('invalid JSON');
+    } catch (\CuyZ\Valinor\Mapper\Source\Exception\InvalidSource $exception) {
+        // Let the application handle the exception in the desired way.
+        // It is possible to get the original source with `$exception->source()`
+    }
+    ```
+
 ## Modifiers
 
 Sometimes the source is not in the same format and/or organised in the same
diff --git a/src/Mapper/Source/Exception/FileExtensionNotHandled.php b/src/Mapper/Source/Exception/FileExtensionNotHandled.php
index 83f9fc9b..5196e369 100644
--- a/src/Mapper/Source/Exception/FileExtensionNotHandled.php
+++ b/src/Mapper/Source/Exception/FileExtensionNotHandled.php
@@ -4,10 +4,10 @@
 
 namespace CuyZ\Valinor\Mapper\Source\Exception;
 
-use RuntimeException;
+use LogicException;
 
 /** @internal */
-final class FileExtensionNotHandled extends RuntimeException implements SourceException
+final class FileExtensionNotHandled extends LogicException
 {
     public function __construct(string $extension)
     {
diff --git a/src/Mapper/Source/Exception/InvalidJson.php b/src/Mapper/Source/Exception/InvalidJson.php
index 90d44af2..ea6c31d5 100644
--- a/src/Mapper/Source/Exception/InvalidJson.php
+++ b/src/Mapper/Source/Exception/InvalidJson.php
@@ -7,13 +7,18 @@
 use RuntimeException;
 
 /** @internal */
-final class InvalidJson extends RuntimeException implements SourceException
+final class InvalidJson extends RuntimeException implements InvalidSource
 {
-    public function __construct()
+    public function __construct(private string $source)
     {
         parent::__construct(
-            "The given value is not a valid JSON entry.",
+            'Invalid JSON source.',
             1566307185
         );
     }
+
+    public function source(): string
+    {
+        return $this->source;
+    }
 }
diff --git a/src/Mapper/Source/Exception/InvalidSource.php b/src/Mapper/Source/Exception/InvalidSource.php
new file mode 100644
index 00000000..cb180fe9
--- /dev/null
+++ b/src/Mapper/Source/Exception/InvalidSource.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CuyZ\Valinor\Mapper\Source\Exception;
+
+use Throwable;
+
+/** @api */
+interface InvalidSource extends Throwable
+{
+    public function source(): mixed;
+}
diff --git a/src/Mapper/Source/Exception/InvalidYaml.php b/src/Mapper/Source/Exception/InvalidYaml.php
index bf182b38..69dfe8ec 100644
--- a/src/Mapper/Source/Exception/InvalidYaml.php
+++ b/src/Mapper/Source/Exception/InvalidYaml.php
@@ -7,13 +7,18 @@
 use RuntimeException;
 
 /** @internal */
-final class InvalidYaml extends RuntimeException implements SourceException
+final class InvalidYaml extends RuntimeException implements InvalidSource
 {
-    public function __construct()
+    public function __construct(private string $source)
     {
         parent::__construct(
-            "The given value is not a valid YAML entry.",
+            'Invalid YAML source.',
             1629990223
         );
     }
+
+    public function source(): string
+    {
+        return $this->source;
+    }
 }
diff --git a/src/Mapper/Source/Exception/SourceException.php b/src/Mapper/Source/Exception/SourceException.php
deleted file mode 100644
index cdb5d179..00000000
--- a/src/Mapper/Source/Exception/SourceException.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace CuyZ\Valinor\Mapper\Source\Exception;
-
-/** @internal */
-interface SourceException
-{
-}
diff --git a/src/Mapper/Source/Exception/SourceNotIterable.php b/src/Mapper/Source/Exception/SourceNotIterable.php
index c0c96636..47843f92 100644
--- a/src/Mapper/Source/Exception/SourceNotIterable.php
+++ b/src/Mapper/Source/Exception/SourceNotIterable.php
@@ -4,19 +4,21 @@
 
 namespace CuyZ\Valinor\Mapper\Source\Exception;
 
-use CuyZ\Valinor\Utility\ValueDumper;
 use RuntimeException;
 
 /** @internal */
-final class SourceNotIterable extends RuntimeException implements SourceException
+final class SourceNotIterable extends RuntimeException implements InvalidSource
 {
-    public function __construct(mixed $value)
+    public function __construct(private string $source)
     {
-        $value = ValueDumper::dump($value);
-
         parent::__construct(
-            "Invalid source $value, expected an iterable.",
+            'Invalid source, expected an iterable.',
             1566307291
         );
     }
+
+    public function source(): string
+    {
+        return $this->source;
+    }
 }
diff --git a/src/Mapper/Source/Exception/UnableToReadFile.php b/src/Mapper/Source/Exception/UnableToReadFile.php
index 9ae0fc80..6ad8a0ff 100644
--- a/src/Mapper/Source/Exception/UnableToReadFile.php
+++ b/src/Mapper/Source/Exception/UnableToReadFile.php
@@ -4,10 +4,10 @@
 
 namespace CuyZ\Valinor\Mapper\Source\Exception;
 
-use RuntimeException;
+use LogicException;
 
 /** @internal */
-final class UnableToReadFile extends RuntimeException implements SourceException
+final class UnableToReadFile extends LogicException
 {
     public function __construct(string $filename)
     {
diff --git a/src/Mapper/Source/Exception/YamlExtensionNotEnabled.php b/src/Mapper/Source/Exception/YamlExtensionNotEnabled.php
index 142e1632..ab6330ad 100644
--- a/src/Mapper/Source/Exception/YamlExtensionNotEnabled.php
+++ b/src/Mapper/Source/Exception/YamlExtensionNotEnabled.php
@@ -4,7 +4,7 @@
 
 namespace CuyZ\Valinor\Mapper\Source\Exception;
 
-use RuntimeException;
+use LogicException;
 
 /**
  * @internal
@@ -12,7 +12,7 @@
  * @codeCoverageIgnore
  * @infection-ignore-all
  */
-final class YamlExtensionNotEnabled extends RuntimeException implements SourceException
+final class YamlExtensionNotEnabled extends LogicException
 {
     public function __construct()
     {
diff --git a/src/Mapper/Source/JsonSource.php b/src/Mapper/Source/JsonSource.php
index 62a4ea60..c85b9f66 100644
--- a/src/Mapper/Source/JsonSource.php
+++ b/src/Mapper/Source/JsonSource.php
@@ -5,6 +5,7 @@
 namespace CuyZ\Valinor\Mapper\Source;
 
 use CuyZ\Valinor\Mapper\Source\Exception\InvalidJson;
+use CuyZ\Valinor\Mapper\Source\Exception\InvalidSource;
 use CuyZ\Valinor\Mapper\Source\Exception\SourceNotIterable;
 use Iterator;
 use IteratorAggregate;
@@ -23,16 +24,19 @@ final class JsonSource implements IteratorAggregate
     /** @var iterable<mixed> */
     private iterable $source;
 
+    /**
+     * @throws InvalidSource
+     */
     public function __construct(string $jsonSource)
     {
         $source = json_decode($jsonSource, true);
 
         if ($source === null) {
-            throw new InvalidJson();
+            throw new InvalidJson($jsonSource);
         }
 
         if (! is_iterable($source)) {
-            throw new SourceNotIterable($source);
+            throw new SourceNotIterable($jsonSource);
         }
 
         $this->source = $source;
diff --git a/src/Mapper/Source/Source.php b/src/Mapper/Source/Source.php
index 90d50180..f50bf322 100644
--- a/src/Mapper/Source/Source.php
+++ b/src/Mapper/Source/Source.php
@@ -4,6 +4,7 @@
 
 namespace CuyZ\Valinor\Mapper\Source;
 
+use CuyZ\Valinor\Mapper\Source\Exception\InvalidSource;
 use CuyZ\Valinor\Mapper\Source\Modifier\CamelCaseKeys;
 use CuyZ\Valinor\Mapper\Source\Modifier\PathMapping;
 use IteratorAggregate;
@@ -39,11 +40,17 @@ public static function array(array $data): Source
         return new Source($data);
     }
 
+    /**
+     * @throws InvalidSource
+     */
     public static function json(string $jsonSource): Source
     {
         return new Source(new JsonSource($jsonSource));
     }
 
+    /**
+     * @throws InvalidSource
+     */
     public static function yaml(string $yamlSource): Source
     {
         return new Source(new YamlSource($yamlSource));
diff --git a/src/Mapper/Source/YamlSource.php b/src/Mapper/Source/YamlSource.php
index ae336674..2756d93a 100644
--- a/src/Mapper/Source/YamlSource.php
+++ b/src/Mapper/Source/YamlSource.php
@@ -4,6 +4,7 @@
 
 namespace CuyZ\Valinor\Mapper\Source;
 
+use CuyZ\Valinor\Mapper\Source\Exception\InvalidSource;
 use CuyZ\Valinor\Mapper\Source\Exception\InvalidYaml;
 use CuyZ\Valinor\Mapper\Source\Exception\SourceNotIterable;
 use CuyZ\Valinor\Mapper\Source\Exception\YamlExtensionNotEnabled;
@@ -26,6 +27,9 @@ final class YamlSource implements IteratorAggregate
     /** @var iterable<mixed> */
     private iterable $source;
 
+    /**
+     * @throws InvalidSource
+     */
     public function __construct(string $yamlSource)
     {
         /** @infection-ignore-all */
@@ -38,11 +42,11 @@ public function __construct(string $yamlSource)
         $source = @yaml_parse($yamlSource);
 
         if ($source === false) {
-            throw new InvalidYaml();
+            throw new InvalidYaml($yamlSource);
         }
 
         if (! is_iterable($source)) {
-            throw new SourceNotIterable($source);
+            throw new SourceNotIterable($yamlSource);
         }
 
         $this->source = $source;
diff --git a/tests/Unit/Mapper/Source/JsonSourceTest.php b/tests/Unit/Mapper/Source/JsonSourceTest.php
index fcc8b3ba..12551ec6 100644
--- a/tests/Unit/Mapper/Source/JsonSourceTest.php
+++ b/tests/Unit/Mapper/Source/JsonSourceTest.php
@@ -22,19 +22,27 @@ public function test_valid_json_is_parsed_correctly(): void
 
     public function test_invalid_json_throws_exception(): void
     {
-        $this->expectException(InvalidJson::class);
-        $this->expectExceptionCode(1566307185);
-        $this->expectExceptionMessage('The given value is not a valid JSON entry.');
-
-        new JsonSource('@');
+        try {
+            new JsonSource('some invalid JSON entry');
+
+            self::fail();
+        } catch (InvalidJson $exception) {
+            self::assertSame(1566307185, $exception->getCode());
+            self::assertSame('Invalid JSON source.', $exception->getMessage());
+            self::assertSame('some invalid JSON entry', $exception->source());
+        }
     }
 
     public function test_invalid_json_type_throws_exception(): void
     {
-        $this->expectException(SourceNotIterable::class);
-        $this->expectExceptionCode(1566307291);
-        $this->expectExceptionMessage('Invalid source true, expected an iterable.');
-
-        new JsonSource('true');
+        try {
+            new JsonSource('true');
+
+            self::fail();
+        } catch (SourceNotIterable $exception) {
+            self::assertSame(1566307291, $exception->getCode());
+            self::assertSame('Invalid source, expected an iterable.', $exception->getMessage());
+            self::assertSame('true', $exception->source());
+        }
     }
 }
diff --git a/tests/Unit/Mapper/Source/YamlSourceTest.php b/tests/Unit/Mapper/Source/YamlSourceTest.php
index 42080eae..0b15268e 100644
--- a/tests/Unit/Mapper/Source/YamlSourceTest.php
+++ b/tests/Unit/Mapper/Source/YamlSourceTest.php
@@ -25,19 +25,27 @@ public function test_valid_yaml_is_parsed_correctly(): void
 
     public function test_invalid_yaml_throws_exception(): void
     {
-        $this->expectException(InvalidYaml::class);
-        $this->expectExceptionCode(1629990223);
-        $this->expectExceptionMessage('The given value is not a valid YAML entry.');
-
-        new YamlSource('@');
+        try {
+            new YamlSource('@ invalid yaml');
+
+            self::fail();
+        } catch (InvalidYaml $exception) {
+            self::assertSame(1629990223, $exception->getCode());
+            self::assertSame('Invalid YAML source.', $exception->getMessage());
+            self::assertSame('@ invalid yaml', $exception->source());
+        }
     }
 
     public function test_invalid_yaml_type_throws_exception(): void
     {
-        $this->expectException(SourceNotIterable::class);
-        $this->expectExceptionCode(1566307291);
-        $this->expectExceptionMessage("Invalid source 'foo', expected an iterable.");
-
-        new YamlSource('foo');
+        try {
+            new YamlSource('foo');
+
+            self::fail();
+        } catch (SourceNotIterable $exception) {
+            self::assertSame(1566307291, $exception->getCode());
+            self::assertSame('Invalid source, expected an iterable.', $exception->getMessage());
+            self::assertSame('foo', $exception->source());
+        }
     }
 }