1. Update .htaccess file
If your web server is using Apache and PHP is set as an Apache module, then you can add a few lines of code in your WordPress .htaccess file to increase the max upload size in WordPress.
To access your .htaccess file, connect to your server via FTP client and navigate to the folder where WordPress is installed. Open up .htaccess file in a code editor or Notepad and add the following lines.
php_value upload_max_filesize 64M php_value post_max_size 128M php_value memory_limit 256M php_value max_execution_time 300 php_value max_input_time 300
This will define the max upload size in Megabytes. Replace the numbers as per your requirement. The max execution time and max input time are in seconds. The execution time defines the limit of time spent on a single script. Choose a number that is suitable for your site.
2. Plugin Method
Not everyone is a fan of writing code or accessing root files using SSH or FTP. For that situation, the plugin comes in handy and luckily there is a WordPress plugin available for increasing WordPress upload size. The plugin we will be using is the Increase Max Upload Filesize plugin.
Go to your WordPress Dashboard → Plugins → Add new, search “Increase Max Upload Filesize” then activate and install the plugin. Once installed, go to plugin settings and simply enter the value for upload size.