TinyPNG – JPEG, PNG & WebP image compression

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$active['unconverted']'.

Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$active".

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$details['message']'.

PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit;

Detected usage of a non-sanitized input variable: $_GET['image_sizes_selected']

$_GET['image_sizes_selected'] not unslashed before sanitization. Use wp_unslash() or similar

Processing form data without nonce verification.

Processing form data without nonce verification.

Sanitization missing for register_setting().

Detected usage of a possibly undefined superglobal array index: $_GET['image_sizes_selected']. Check that the array index exists before using it.

Function "mb_strlen()" requires WordPress 4.2.0, but your plugin minimum supported version is WordPress 4.0.0.

Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "'wp_ajax_' . $action".

error_log() found. Debug code should not normally be used in production.

All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.

File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fopen().

File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: is_writable().

Unescaped parameter $query used in $wpdb->get_results()\n$query assigned unsafely at line 69.

Use of a direct database call is discouraged.

Direct database call without caching detected. Consider using wp_cache_get() / wp_cache_set() or wp_cache_delete().

wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed.

File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fclose().