diff --git a/source/conf.py b/source/conf.py
index 4c6d8bea4..a8a040d6c 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -83,10 +83,6 @@
     # https://plausible.io/packaging.python.org
     html_js_files.extend(_metrics_js_files)
 
-html_extra_path = [
-    "../extra",
-]
-
 # -- Options for HTML help output ------------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-help-output
 
diff --git a/source/specifications/build-details/v1.0.rst b/source/specifications/build-details/v1.0.rst
index 3a8cfe277..cfe902e1e 100644
--- a/source/specifications/build-details/v1.0.rst
+++ b/source/specifications/build-details/v1.0.rst
@@ -8,7 +8,7 @@
 Specification
 -------------
 
-.. jsonschema:: ../../../extra/specifications/schemas/build-details-v1.0.schema.json
+.. jsonschema:: ../schemas/build-details-v1.0.schema.json
     :lift_title: false
 
 
diff --git a/source/specifications/direct-url-data-structure.rst b/source/specifications/direct-url-data-structure.rst
index 0d243652d..5f3af0fae 100644
--- a/source/specifications/direct-url-data-structure.rst
+++ b/source/specifications/direct-url-data-structure.rst
@@ -236,122 +236,7 @@ JSON Schema
 
 The following JSON Schema can be used to validate the contents of ``direct_url.json``:
 
-.. code-block::
-
-     {
-       "$schema": "https://json-schema.org/draft/2019-09/schema",
-       "title": "Direct URL Data",
-       "description": "Data structure that can represent URLs to python projects and distribution artifacts such as VCS source trees, local source trees, source distributions and wheels.",
-       "definitions": {
-         "URL": {
-           "type": "string",
-           "format": "uri"
-         },
-         "DirInfo": {
-           "type": "object",
-           "properties": {
-             "editable": {
-               "type": ["boolean", "null"]
-             }
-           }
-         },
-         "VCSInfo": {
-           "type": "object",
-           "properties": {
-             "vcs": {
-               "type": "string",
-               "enum": [
-                 "git",
-                 "hg",
-                 "bzr",
-                 "svn"
-               ]
-             },
-             "requested_revision": {
-               "type": "string"
-             },
-             "commit_id": {
-               "type": "string"
-             },
-             "resolved_revision": {
-               "type": "string"
-             }
-           },
-           "required": [
-             "vcs",
-             "commit_id"
-           ]
-         },
-         "ArchiveInfo": {
-           "type": "object",
-           "properties": {
-             "hash": {
-               "type": "string",
-               "pattern": "^\\w+=[a-f0-9]+$",
-               "deprecated": true
-             },
-             "hashes": {
-               "type": "object",
-               "patternProperties": {
-                 "^[a-f0-9]+$": {
-                   "type": "string"
-                 }
-               }
-             }
-           }
-         }
-       },
-       "allOf": [
-         {
-           "type": "object",
-           "properties": {
-             "url": {
-               "$ref": "#/definitions/URL"
-             }
-           },
-           "required": [
-             "url"
-           ]
-         },
-         {
-           "anyOf": [
-             {
-               "type": "object",
-               "properties": {
-                 "dir_info": {
-                   "$ref": "#/definitions/DirInfo"
-                 }
-               },
-               "required": [
-                 "dir_info"
-               ]
-             },
-             {
-               "type": "object",
-               "properties": {
-                 "vcs_info": {
-                   "$ref": "#/definitions/VCSInfo"
-                 }
-               },
-               "required": [
-                 "vcs_info"
-               ]
-             },
-             {
-               "type": "object",
-               "properties": {
-                 "archive_info": {
-                   "$ref": "#/definitions/ArchiveInfo"
-                 }
-               },
-               "required": [
-                 "archive_info"
-               ]
-             }
-           ]
-         }
-       ]
-     }
+.. literalinclude:: schemas/direct-url.schema.json
 
 Examples
 ========
diff --git a/source/specifications/index.rst b/source/specifications/index.rst
index 68d95ab98..c375654a2 100644
--- a/source/specifications/index.rst
+++ b/source/specifications/index.rst
@@ -17,3 +17,4 @@ and for proposing new ones, is documented on
    section-package-indices
    section-python-description-formats
    section-reproducible-environments
+   schemas/index.rst
diff --git a/extra/specifications/schemas/build-details-v1.0.schema.json b/source/specifications/schemas/build-details-v1.0.schema.json
similarity index 100%
rename from extra/specifications/schemas/build-details-v1.0.schema.json
rename to source/specifications/schemas/build-details-v1.0.schema.json
diff --git a/source/specifications/schemas/direct-url.schema.json b/source/specifications/schemas/direct-url.schema.json
new file mode 100644
index 000000000..d1f4c860a
--- /dev/null
+++ b/source/specifications/schemas/direct-url.schema.json
@@ -0,0 +1,99 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "https://packaging.python.org/en/latest/specifications/schemas/direct-url.schema.json",
+  "title": "Direct URL Data",
+  "description": "Data structure that can represent URLs to python projects and distribution artifacts such as VCS source trees, local source trees, source distributions and wheels.",
+  "definitions": {
+    "url": {
+      "type": "string",
+      "format": "uri"
+    },
+    "DirInfo": {
+      "type": "object",
+      "properties": {
+        "editable": {
+          "type": ["boolean", "null"]
+        }
+      }
+    },
+    "VCSInfo": {
+      "type": "object",
+      "properties": {
+        "vcs": {
+          "type": "string",
+          "enum": ["git", "hg", "bzr", "svn"]
+        },
+        "requested_revision": {
+          "type": "string"
+        },
+        "commit_id": {
+          "type": "string"
+        },
+        "resolved_revision": {
+          "type": "string"
+        }
+      },
+      "required": ["vcs", "commit_id"]
+    },
+    "ArchiveInfo": {
+      "type": "object",
+      "properties": {
+        "hash": {
+          "type": "string",
+          "pattern": "^\\w+=[a-f0-9]+$",
+          "deprecated": true
+        },
+        "hashes": {
+          "type": "object",
+          "patternProperties": {
+            "^[a-f0-9]+$": {
+              "type": "string"
+            }
+          }
+        }
+      }
+    }
+  },
+  "allOf": [
+    {
+      "type": "object",
+      "properties": {
+        "url": {
+          "$ref": "#/definitions/url"
+        }
+      },
+      "required": ["url"]
+    },
+    {
+      "anyOf": [
+        {
+          "type": "object",
+          "properties": {
+            "dir_info": {
+              "$ref": "#/definitions/DirInfo"
+            }
+          },
+          "required": ["dir_info"]
+        },
+        {
+          "type": "object",
+          "properties": {
+            "vcs_info": {
+              "$ref": "#/definitions/VCSInfo"
+            }
+          },
+          "required": ["vcs_info"]
+        },
+        {
+          "type": "object",
+          "properties": {
+            "archive_info": {
+              "$ref": "#/definitions/ArchiveInfo"
+            }
+          },
+          "required": ["archive_info"]
+        }
+      ]
+    }
+  ]
+}
diff --git a/source/specifications/schemas/index.rst b/source/specifications/schemas/index.rst
new file mode 100644
index 000000000..a80891975
--- /dev/null
+++ b/source/specifications/schemas/index.rst
@@ -0,0 +1,8 @@
+.. _`packaging-schemas`:
+
+PyPA schemas
+############
+
+- `direct_url.json <direct-url.schema.json>`_
+- `build-details.json <build-details-v1.0.schema.json>`_
+- `pylock.toml <pylock.schema.json>`_
diff --git a/source/specifications/schemas/pylock.schema.json b/source/specifications/schemas/pylock.schema.json
new file mode 100644
index 000000000..90404e33d
--- /dev/null
+++ b/source/specifications/schemas/pylock.schema.json
@@ -0,0 +1,345 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://packaging.python.org/en/latest/specifications/schemas/pylock.schema.json",
+  "additionalProperties": false,
+  "definitions": {
+    "tool": {
+      "type": "object",
+      "markdownDescription": "Similar usage as that of the `[tool]` table from the [pyproject.toml specification](https://packaging.python.org/en/latest/specifications/pyproject-toml/#pyproject-toml-spec), but at the package version level instead of at the lock file level (which is also available via `[tool]`).",
+      "additionalProperties": {
+        "type": "object",
+        "additionalProperties": true
+      }
+    },
+    "url": {
+      "type": "string",
+      "markdownDescription": "The URL to the source tree."
+    },
+    "path": {
+      "type": "string",
+      "markdownDescription": "The path to the local directory of the source tree."
+    },
+    "upload-time": {
+      "markdownDescription": "The time the file was uploaded (UTC). Must be specified as a datetime literal."
+    },
+    "size": {
+      "type": "integer",
+      "markdownDescription": "The size of the archive file."
+    },
+    "hashes": {
+      "type": "object",
+      "description": "Known hash values of the file where the key is the hash algorithm and the value is the hash value.",
+      "additionalProperties": {
+        "type": "string"
+      }
+    },
+    "subdirectory": {
+      "type": "string",
+      "markdownDescription": "The subdirectory within the [source tree](https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-format-source-tree) where the project root of the project is (e.g. the location of the `pyproject.toml` file)."
+    },
+    "vcs": {
+      "type": "object",
+      "markdownDescription": "Record the version control system details for the [source tree](https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-format-source-tree) it contains.",
+      "additionalProperties": false,
+      "properties": {
+        "type": {
+          "type": "string",
+          "markdownDescription": "The type of version control system used."
+        },
+        "url": {
+          "$ref": "#/definitions/url"
+        },
+        "path": {
+          "$ref": "#/definitions/path"
+        },
+        "requested-revision": {
+          "type": "string",
+          "markdownDescription": "The branch/tag/ref/commit/revision/etc. that the user requested."
+        },
+        "commit-id": {
+          "type": "string",
+          "markdownDescription": "The exact commit/revision number that is to be installed."
+        },
+        "subdirectory": {
+          "$ref": "#/definitions/subdirectory"
+        }
+      }
+    },
+    "directory": {
+      "type": "object",
+      "markdownDescription": "Record the local directory details for the [source tree](https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-format-source-tree) it contains.",
+      "additionalProperties": false,
+      "properties": {
+        "path": {
+          "type": "string",
+          "markdownDescription": "The local directory where the source tree is."
+        },
+        "editable": {
+          "type": "boolean",
+          "default": false,
+          "markdownDescription": "A flag representing whether the source tree was an editable install at lock time."
+        },
+        "subdirectory": {
+          "$ref": "#/definitions/subdirectory"
+        }
+      }
+    },
+    "archive": {
+      "type": "object",
+      "additionalProperties": false,
+      "markdownDescription": "A direct reference to an archive file to install from (this can include wheels and sdists, as well as other archive formats containing a source tree).",
+      "properties": {
+        "url": {
+          "$ref": "#/definitions/url"
+        },
+        "path": {
+          "$ref": "#/definitions/path"
+        },
+        "size": {
+          "$ref": "#/definitions/size"
+        },
+        "upload-time": {
+          "$ref": "#/definitions/upload-time"
+        },
+        "hashes": {
+          "$ref": "#/definitions/hashes"
+        },
+        "subdirectory": {
+          "$ref": "#/definitions/subdirectory"
+        }
+      }
+    },
+    "sdist": {
+      "type": "object",
+      "additionalProperties": false,
+      "markdownDescription": "Details of a [source distribution file name](https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-format-sdist) for the package.",
+      "properties": {
+        "name": {
+          "type": "string",
+          "markdownDescription": "The file name of the [source distribution file name](https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-format-sdist) file."
+        },
+        "upload-time": {
+          "$ref": "#/definitions/upload-time"
+        },
+        "url": {
+          "$ref": "#/definitions/url"
+        },
+        "path": {
+          "$ref": "#/definitions/path"
+        },
+        "size": {
+          "$ref": "#/definitions/size"
+        },
+        "hashes": {
+          "$ref": "#/definitions/hashes"
+        }
+      }
+    },
+    "wheels": {
+      "type": "array",
+      "markdownDescription": "For recording the wheel files as specified by [Binary distribution format](https://packaging.python.org/en/latest/specifications/binary-distribution-format/#binary-distribution-format) for the package.",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "name": {
+            "type": "string",
+            "markdownDescription": "The file name of the [Binary distribution format](https://packaging.python.org/en/latest/specifications/binary-distribution-format/#binary-distribution-format) file."
+          },
+          "upload-time": {
+            "$ref": "#/definitions/upload-time"
+          },
+          "url": {
+            "$ref": "#/definitions/url"
+          },
+          "path": {
+            "$ref": "#/definitions/path"
+          },
+          "size": {
+            "$ref": "#/definitions/size"
+          },
+          "hashes": {
+            "$ref": "#/definitions/hashes"
+          }
+        }
+      }
+    },
+    "1.0": {
+      "required": ["lock-version", "created-by", "packages"],
+      "properties": {
+        "lock-version": {
+          "type": "string",
+          "enum": ["1.0"],
+          "description": "Record the file format version that the file adheres to."
+        },
+        "environments": {
+          "type": "array",
+          "markdownDescription": "A list of [environment markers](https://packaging.python.org/en/latest/specifications/dependency-specifiers/#dependency-specifiers-environment-markers) for which the lock file is considered compatible with.",
+          "items": {
+            "type": "string",
+            "description": "Environment marker"
+          }
+        },
+        "requires-python": {
+          "type": "string",
+          "markdownDescription": "Specifies the [Requires-Python](https://packaging.python.org/en/latest/specifications/core-metadata/#core-metadata-requires-python) for the minimum Python version compatible for any environment supported by the lock file (i.e. the minimum viable Python version for the lock file)."
+        },
+        "extras": {
+          "type": "array",
+          "markdownDescription": "The list of [extras](https://packaging.python.org/en/latest/specifications/core-metadata/#core-metadata-provides-extra) supported by this lock file.",
+          "default": [],
+          "items": {
+            "type": "string",
+            "description": "Extra name"
+          }
+        },
+        "dependency-groups": {
+          "type": "array",
+          "markdownDescription": "The list of [dependency groups](https://packaging.python.org/en/latest/specifications/dependency-groups/#dependency-groups) publicly supported by this lock file (i.e. dependency groups users are expected to be able to specify via a tool’s UI).",
+          "default": [],
+          "items": {
+            "type": "string",
+            "description": "Dependency group name"
+          }
+        },
+        "default-groups": {
+          "type": "array",
+          "markdownDescription": "The name of synthetic dependency groups to represent what should be installed by default (e.g. what `project.dependencies` implicitly represents).",
+          "default": [],
+          "items": {
+            "type": "string",
+            "description": "Dependency group name"
+          }
+        },
+        "created-by": {
+          "type": "string",
+          "markdownDescription": "Records the name of the tool used to create the lock file."
+        },
+        "packages": {
+          "type": "array",
+          "markdownDescription": "An array containing all packages that may be installed.",
+          "items": {
+            "type": "object",
+            "additionalProperties": false,
+            "required": ["name"],
+            "allOf": [
+              {
+                "if": {
+                  "required": ["vcs"]
+                },
+                "then": {
+                  "not": {
+                    "required": ["directory", "archive", "sdist", "wheels"]
+                  }
+                }
+              },
+              {
+                "if": {
+                  "required": ["directory"]
+                },
+                "then": {
+                  "not": {
+                    "required": ["vcs", "archive", "sdist", "wheels"]
+                  }
+                }
+              },
+              {
+                "if": {
+                  "required": ["sdist"]
+                },
+                "then": {
+                  "not": {
+                    "required": ["vcs", "directory", "archive"]
+                  }
+                }
+              },
+              {
+                "if": {
+                  "required": ["wheels"]
+                },
+                "then": {
+                  "not": {
+                    "required": ["vcs", "directory", "archive"]
+                  }
+                }
+              }
+            ],
+            "properties": {
+              "name": {
+                "type": "string",
+                "markdownDescription": "The name of the package, [normalized](https://packaging.python.org/en/latest/specifications/name-normalization/#name-normalization)."
+              },
+              "version": {
+                "type": "string",
+                "description": "The version of the package."
+              },
+              "marker": {
+                "type": "string",
+                "markdownDescription": "The [environment marker](https://packaging.python.org/en/latest/specifications/dependency-specifiers/#dependency-specifiers-environment-markers) which specify when the package should be installed."
+              },
+              "requires-python": {
+                "type": "string",
+                "markdownDescription": "Holds the [version specifiers](https://packaging.python.org/en/latest/specifications/version-specifiers/#version-specifiers) for Python version compatibility for the package."
+              },
+              "dependencies": {
+                "type": "array",
+                "markdownDescription": "Records the other entries in `[[packages]]` which are direct dependencies of this package.",
+                "items": {
+                  "type": "object",
+                  "markdownDescription": "A table which contains the minimum information required to tell which other package entry it corresponds to where doing a key-by-key comparison would find the appropriate package with no ambiguity (e.g. if there are two entries for the `spam` package, then you can include the version number like `{name = \"spam\", version = \"1.0.0\"}`, or by source like `{name = \"spam\", vcs = { url = \"...\"}`).",
+                  "additionalProperties": true
+                }
+              },
+              "vcs": {
+                "$ref": "#/definitions/vcs"
+              },
+              "directory": {
+                "$ref": "#/definitions/directory"
+              },
+              "archive": {
+                "$ref": "#/definitions/archive"
+              },
+              "index": {
+                "type": "string",
+                "markdownDescription": "The base URL for the package index from [simple repository API](https://packaging.python.org/en/latest/specifications/simple-repository-api/#simple-repository-api) where the sdist and/or wheels were found (e.g. `https://pypi.org/simple/`)."
+              },
+              "sdist": {
+                "$ref": "#/definitions/sdist"
+              },
+              "wheels": {
+                "$ref": "#/definitions/wheels"
+              },
+              "attestation-identities": {
+                "type": "array",
+                "markdownDescription": "A recording of the attestations for any file recorded for this package.",
+                "items": {
+                  "type": "object",
+                  "additionalProperties": false,
+                  "required": ["kind"],
+                  "properties": {
+                    "kind": {
+                      "type": "string",
+                      "markdownDescription": "The unique identity of the Trusted Publisher."
+                    }
+                  }
+                }
+              },
+              "tool": {
+                "$ref": "#/definitions/tool"
+              }
+            }
+          }
+        },
+        "tool": {
+          "$ref": "#/definitions/tool"
+        }
+      }
+    }
+  },
+  "oneOf": [
+    {
+      "$ref": "#/definitions/1.0"
+    }
+  ],
+  "type": "object"
+}