diff --git a/Cargo.lock b/Cargo.lock
index 7aefb1e..05b4c20 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -748,7 +748,7 @@ dependencies = [
 
 [[package]]
 name = "json-lines-viewer"
-version = "0.4.3"
+version = "0.4.4"
 dependencies = [
  "anyhow",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index 63e95ee..f9a2a25 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,11 @@
 [package]
 name = "json-lines-viewer"
-version = "0.4.3"
+version = "0.4.4"
 edition = "2024"
-description = "JSON Lines Viewer - Terminal-UI to view application logs in 'Json line format' or Zip files containing such files"
+description = "JSON Lines Viewer - Terminal-UI to view JSON line files (e.g. application logs) or Zip files containing such files"
+documentation = "https://github.com/bitmagier/json-lines-viewer"
 authors = ["Roman Krüger"]
-keywords = ["Json", "viewer", "TUI"]
+keywords = ["JSON", "viewer", "TUI"]
 license = "MIT"
 repository = "https://github.com/bitmagier/json-lines-viewer"
 
diff --git a/README.md b/README.md
index 52461ea..8d7e95c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 JSON Lines Viewer
 ---
-A terminal-UI to browse through JSON-line files.
+Terminal-UI to view JSON line files (e.g. application logs) or Zip files containing such files
 
 _The main use case is to support the analysis of comprehensive application logs in 'Json line' format._
 
@@ -17,11 +17,11 @@ Download precompiled binary for your platform from Github.
 ## Usage
 
 ```
-JSON Lines Viewer - Terminal-UI to view application logs in 'Json line format' or Zip files containing such files.
+JSON Lines Viewer - Terminal-UI to view '.json' line files (e.g. application logs) or Zip files containing such files
 
 Navigation: Cursor keys, PageUp/Down, Enter/Esc.
-Find content: Ctrl-f or '/' and navigate to next/previous finding via cursor Down/Up.
-Save current settings: Ctrl-s (e.g. field order. Settings come from commandline arguments and a previously saved config file)
+Search content: Ctrl-f or '/' and navigate to next/previous finding via cursor down/up. Leave search field with `Esc`.
+Save current settings: Ctrl-s (Settings may come from commandline options and a previously saved config file)
 
 Usage: json-lines-viewer [OPTIONS] [FILES]...
 
@@ -38,14 +38,16 @@ Options:
 
   -h, --help
           Print help (see a summary with '-h')
+
+  -V, --version
+          Print version
 ```
 
 ### Example
 ```
-json-lines-viewer --field-order @timestamp,level,application_id,message,application_version,land,host_ipv4,host_name,thread_name,correlation_id,logger_name logs-export-XXXX.zip
+json-lines-viewer --field-order @timestamp,level,application_id,message,application_version,land,host_ipv4,host_name,thread_name,correlation_id,logger_name logs-export-xxxxx.zip
 ```
 
-
 ## Program navigation / usage
 
 - Use Cursor Keys and PageUp/PageDown to navigate on a page
diff --git a/src/main.rs b/src/main.rs
index 8c845dc..bb64041 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,11 +18,11 @@ use std::io::BufRead;
 use std::path::{Path, PathBuf};
 
 #[derive(Parser, Debug)]
-#[command(version, about, long_about = Some("JSON Lines Viewer - Terminal-UI to view application logs in 'Json line format' or Zip files containing such files.\n\
-                                                \n\
-                                                Navigation: Cursor keys, PageUp/Down, Enter/Esc.\n\
-                                                Search content: Ctrl-f or '/' and navigate to next/previous finding via cursor Down/Up.\n\
-                                                Save current settings: Ctrl-s (e.g. field order. Settings come from commandline arguments and a previously saved config file)"))]
+#[command(version, about, long_about = Some("JSON Lines Viewer - Terminal-UI to view JSON line files (e.g. application logs) or Zip files containing such files\n\
+                                            \n\
+                                            Navigation: Cursor keys, PageUp/Down, Enter/Esc.\n\
+                                            Search content: Ctrl-f or '/' and navigate to next/previous finding via cursor down/up. Leave search field with `Esc`.\n\
+                                            Save current settings: Ctrl-s (Settings may come from commandline options and a previously saved config file)"))]
 struct Args {
     /// JSON line input files - `.json` or `.zip` files(s) containing `.json` files
     files: Vec<PathBuf>,
@@ -98,7 +98,11 @@ fn load_files(files: &[PathBuf]) -> anyhow::Result<RawJsonLines> {
     let mut raw_lines = RawJsonLines::default();
 
     for path in files {
-        match path.extension().and_then(|e| e.to_str()) {
+        match path.extension()
+            .and_then(|e| e.to_str())
+            .map(|e| e.to_ascii_lowercase())
+            .as_deref()
+        {
             Some("json") => load_lines_from_json(&mut raw_lines, path).with_context(|| format!("failed to load lines from {path:?}"))?,
             Some("zip") => load_lines_from_zip(&mut raw_lines, path).with_context(|| format!("failed to load lines from {path:?}"))?,
             _ => eprintln!("unknown file extension: '{}'", path.to_string_lossy()),
@@ -142,7 +146,7 @@ fn load_lines_from_zip(
             .by_index(i)
             .with_context(|| format!("failed to get file with index {i} from zip"))?;
 
-        if !f.is_file() || !f.name().ends_with(".json") {
+        if !f.is_file() || !f.name().to_ascii_lowercase().ends_with(".json") {
             continue;
         }