How to Avoid Request Entity Too Large 413 Error

How to fix it in NGINX? client_max_body_size

To fix this, you need to increase the value of the client_max_body_size directive. This directive defines the maximum amount of data Nginx will accept in an HTTP request. By default this value is set to 1 megabyte, meaning if you attempt to upload a file larger than 1 megabyte you'll be getting an Error 413: Request entity too large page. You can insert this directive at three levels:

• In the http block: this will set the directive value for all server and locations in your configurationn

• In the server block: this will set the directive value for all locations of one particular server

• In the location block: this will set the directive value for one specific location in a particular server

In this example I'm going to insert it in my http block and set it to 500 megabytes:

http {

    client_max_body_size 500M; # allows file uploads up to 500 megabytes
    [...]
}

source:

Try to look for the following line in the php.ini and set it to the size that you require:

post_max_size = 25M

You can then set it in the .htaccess file:

php_value post_max_size 25M

On Apache 2.4 it is worth looking at the LimitRequestBody directive as well. It can be configured per vhost and it goes into the <Directory> section.

<VirtualHost *:80> 
  [...]
  <Directory "/var/www/public_html"> 
    [...]
    LimitRequestBody 33554432 
  </Directory> 
</VirtualHost> 

The size value is in bytes. This finally solved it for me when I tried both the php.ini max size directives and was still getting errors.

php.ini has a setting called post_max_size, which is set to 8M by default (on Ubuntu at least).

Consider increasing that value if you are posting a lot of data.