How do I increase the maximum image upload size for the signature in Roundcube

Introduction

Below are the steps to adjust the size limit for an image attached to a signature or an identity.

Procedure

From SSH

How to log into server using SSH?

Login to your server and edit the following file with your favorite text editor.

How to edit a file on command-line

/usr/local/cpanel/base/3rdparty/roundcube/config/config.inc.php

And look for the line containing the following information

// Maximum size of uploaded image in kilobytes
// Images (in html signatures) are stored in database as data URIs
$config['identity_image_size'] = 64;

This is around line 567.

Increasing this value will allow for larger image sizes to be attached to identities and signatures.