diff --git a/src/config.py b/src/config.py
new file mode 100644
index 0000000..27174cf
--- /dev/null
+++ b/src/config.py
@@ -0,0 +1,43 @@
+from pathlib import Path
+
+from pydantic import BaseModel
+from pydantic_settings import BaseSettings  # , SettingsConfigDict
+
+
+class JavaVm(BaseModel):
+    version: str = ""
+    path_to_binary_file: Path
+
+
+class DiffPdf(BaseModel):
+    version: str = ""
+    path_to_binary_file: Path
+    default_params: list[str]
+
+
+class SaxonJar(BaseModel):
+    version: str = ""
+    path_to_jar_file: Path
+
+
+class ApacheFop(BaseModel):
+    version: str = ""
+    path_to_dir: Path
+    
+
+class Project(BaseSettings):
+    name: str
+    project_dir: Path
+    java_version: str
+    diff_pdf_version: str
+    saxon_jar_version: str
+    apache_fop_version: str
+    default_params: dict[str, str] = {}
+
+
+class AppSettings(BaseSettings):
+    java_vms: list[JavaVm]
+    diff_pdfs: list[DiffPdf]
+    saxon_jars: list[SaxonJar]
+    apache_fops: list[ApacheFop]
+    projects: list[Project] = []