Increase Maximum Upload File Size, WordPress

Update .htaccess file inside the WordPress folder

php_value upload_max_filesize 128M
php_value post_max_size 128M
php_value memory_limit 256M
php_value max_execution_time 300
php_value max_input_time 300

Update wp-config.php file inside the WordPress folder

@ini_set( 'upload_max_filesize' , '128M' );
@ini_set( 'post_max_size', '128M');
@ini_set( 'memory_limit', '256M' );
@ini_set( 'max_execution_time', '300' );
@ini_set( 'max_input_time', '300' );

Note:

• php_value max_execution_time 300  and php_value max_input_time 300 must be bigger than
• php_value memory_limit 256M and php_value memory_limit 256M must be bigger than
• php_value upload_max_filesize 128M and php_value post_max_size 128M.

For more about how to increase visit here How to Increase Maximum Upload File Size in WordPress