small fix in script; improved README.md

README.md

@@ -1,2 +1,29 @@
 # bytes-formatter
-Small web app for converting between different bytes representations (hex, dec, base64, etc)
+
+![](img/example.png)
+
+Visit this tool at [bf.qkation.com/index.html](https://bf.qkation.com/index.html).
+
+Convert bytes between different representations: hex, base64, decimal, ascii, etc.
+
+Main features:
+
+* share by the link
+* Integrated [asn1 parser](https://lapo.it/asn1js/) (available for `hex` and `base64` output types)
+* remembers current state
+
+## Meta
+
+Pavlo Myroniuk - [[email protected]](mailto:[email protected]).
+
+Distributed under the [MIT](https://github.com/TheBestTvarynka/bytes-formatter/blob/main/LICENSE) license.
+
+## Contributing
+
+Feel free to contribute.
+
+1. Fork it (<https://github.com/yourname/yourproject/fork>)
+2. Create your feature branch (`git checkout -b feature/fooBar`)
+3. Commit your changes (`git commit -am 'Add some fooBar'`)
+4. Push to the branch (`git push origin feature/fooBar`)
+5. Create a new Pull Request

src/script.js

@@ -86,6 +86,10 @@ const saveInLocalStorage = () => {
 const loadFromLocalStorage = () => {
   const parameters = JSON.parse(window.localStorage.getItem('params'));
 
+  if (!parameters) {
+    return;
+  }
+
   if (parameters['inType']) {
     document.getElementById('inType').value = parameters['inType'];
   }