laravel app.js very large file size

Question

I have deployed a Laravel 5.3 application to Heroku. However, when loading /login, I noticed a very slow page load time. The problem seems to be a very large app.js

Answer 1

From the looks of your link you've not created a production version of your assets, and currently all the source maps are in your app.js file, which will be adding a lot of the file size, the css and js output are also not compress/minified either.

Assuming you're using laravel elixir, you just need to run gulp --production and this will remove the source maps, compress the js and css outputs, etc.