WooCommerce - rename the "Have a Coupon?" message and "Apply Coupon" field on the checkout

wc-rename-checkout-coupon-field.php

<?php

// rename the "Have a Coupon?" message on the checkout page
function woocommerce_rename_coupon_message_on_checkout() {

	return 'Have a Promo Code?' . ' <a href="#" class="showcoupon">' . __( 'Click here to enter your code', 'woocommerce' ) . '</a>';
}
add_filter( 'woocommerce_checkout_coupon_message', 'woocommerce_rename_coupon_message_on_checkout' );

// rename the coupon field on the checkout page
function woocommerce_rename_coupon_field_on_checkout( $translated_text, $text, $text_domain ) {

	// bail if not modifying frontend woocommerce text
	if ( is_admin() || 'woocommerce' !== $text_domain ) {
		return $translated_text;
	}

	if ( 'Coupon code' === $text ) {
		$translated_text = 'Promo Code';
	
	} elseif ( 'Apply Coupon' === $text ) {
		$translated_text = 'Apply Promo Code';
	}

	return $translated_text;
}
add_filter( 'gettext', 'woocommerce_rename_coupon_field_on_checkout', 10, 3 );

function my_text_strings( $translated_text, $text, $domain ) {
    switch ( $translated_text ) {
        case 'Billing details' :
            $translated_text = __( 'Faktureringsdetaljer', 'woocommerce' );
            break;
        case 'Your order' :
            $translated_text = __( 'Din bestilling', 'woocommerce' );
            break;
        case 'View cart' :
            $translated_text = __( 'Se indkøbsvogn', 'woocommerce' );
            break;
        case 'Apply coupon' :
            $translated_text = __( 'Anvend kupon', 'woocommerce' );
            break;
        case 'Update cart' :
            $translated_text = __( 'Opdater indkøbsvogn', 'woocommerce' );
            break;
        case 'Proceed to checkout' :
            $translated_text = __( 'Gå til kassen', 'woocommerce' );
            break;
        case 'Cart totals' :
            $translated_text = __( 'Indkøbskurv totaler', 'woocommerce' );
            break;
        case 'Place order' :
            $translated_text = __( 'Angiv bestilling', 'woocommerce' );
            break;
    }
    return $translated_text;
}
add_filter( 'gettext', 'my_text_strings', 20, 3 );

// rename the "Have a Coupon?" message on the checkout page
function woocommerce_rename_coupon_message_on_checkout() {
	return 'Har du en kupon?' . ' <a href="#" class="showcoupon">' . __( 'Klik her for at indtaste din kode', 'woocommerce' ) . '</a>';
}
add_filter( 'woocommerce_checkout_coupon_message', 'woocommerce_rename_coupon_message_on_checkout' );

Not sure what im doing wrong here, but I cant get this to work. I've downloaded the wc-rename-checkout-coupon-field.php file and uploaded it inside my theme folder but nothing happened. Is that wrong?

@stewartanthony the code won't be executed. you have to put inside your theme functions.php or some plugin. In your case I would advise going for the solution with functions.php

@bradleywiebe2 - Works like a charm, thank you sir!

I'm having just a bit of trouble...Everything works great, however, one part that that I can't seem to fix is on the checkout page. I changed the name of the coupon code section in every part successfully to "Gift Code" instead, except this area:

"If you have a coupon code, please apply it below." see screenshot: http://prntscr.com/kr9nkj

How do I change that line to say "Gift Code" as well?

Here is the code I'm using:

`// rename the coupon field on the cart page
function woocommerce_rename_coupon_field_on_cart( $translated_text, $text, $text_domain ) {
// bail if not modifying frontend woocommerce text
if ( is_admin() || 'woocommerce' !== $text_domain ) {
return $translated_text;
}
if ( 'Coupon:' === $text ) {
$translated_text = 'Gift Code:';
}
return $translated_text;
}
add_filter( 'gettext', 'woocommerce_rename_coupon_field_on_cart', 10, 3 );

// rename the "Have a Coupon?" message on the checkout page
function woocommerce_rename_coupon_message_on_checkout() {
return 'Have a Gift Code?' . ' ' . __( 'Click here to enter your code', 'woocommerce' ) . '';
}
add_filter( 'woocommerce_checkout_coupon_message', 'woocommerce_rename_coupon_message_on_checkout' );
// rename the coupon field on the checkout page
function woocommerce_rename_coupon_field_on_checkout( $translated_text, $text, $text_domain ) {
// bail if not modifying frontend woocommerce text
if ( is_admin() || 'woocommerce' !== $text_domain ) {
return $translated_text;
}
if ( 'Coupon code' === $text ) {
$translated_text = 'Gift Code';

} elseif ( 'Apply coupon' === $text ) {
	$translated_text = 'Apply Code';
}
return $translated_text;

}
add_filter( 'gettext', 'woocommerce_rename_coupon_field_on_checkout', 10, 3 );`

you can just edit the woocommerce/checkout/form-coupon.php file and add this to your theme

In case someone want's to change the "If you have a coupon code, please apply it below." string to something else, here is a way to do it.

add_filter( 'gettext', 'woocommerce_change_coupon_field_instruction_text' );

function woocommerce_change_coupon_field_instruction_text($translated) {
$translated = str_ireplace('If you have a coupon code, please apply it below.', 'YOUR NEW STRING', $translated);
return $translated;
}

@gabros20 anything changed here? That's not working for me so far

Hello! Can I change also the background off the promo code? Is now #FFFFFF I want to change it! THanks!

This is not working for me as well.

@Ruben2600 try to change with css.

.cart .coupon .button {
    background-color: #000000;
}

replace it with proper css class (applied in your theme).

I just went through this and this code snippet is working for me:

/**
 * Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function bt_rename_coupon_field_on_cart( $translated_text, $text, $text_domain ) {
	// bail if not modifying frontend woocommerce text
	if ( is_admin() || 'woocommerce' !== $text_domain ) {
		return $translated_text;
	}
	if ( 'Coupon:' === $text ) {
		$translated_text = 'Voucher Code:';
	}

	if ('Coupon has been removed.' === $text){
		$translated_text = 'Voucher code has been removed.';
	}

	if ( 'Apply coupon' === $text ) {
		$translated_text = 'Apply voucher';
	}

	if ( 'Coupon code' === $text ) {
		$translated_text = 'Voucher code';
	
	} 

	return $translated_text;
}
add_filter( 'gettext', 'bt_rename_coupon_field_on_cart', 10, 3 );

/**
 * Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function bt_rename_coupon_message_on_checkout() {
	return 'Have a voucher code?' . ' <a href="#" class="showcoupon">' . __( 'Click here to enter your code', 'woocommerce' ) . '</a>.';
}
add_filter( 'woocommerce_checkout_coupon_message', 'bt_rename_coupon_message_on_checkout' );

/**
 * Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function bt_rename_coupon_label( $err, $err_code=null, $something=null ){
	$err = str_ireplace("Coupon","voucher",$err);
	return $err;
}
add_filter( 'woocommerce_coupon_error', 'bt_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_coupon_message', 'bt_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_cart_totals_coupon_label', 'bt_rename_coupon_label',10, 1 );

Just posting it for easy reference for future developers, as it compiles others feedback in this thread, plus fixes missing bits of html in one of the comments.

Actually I've tweaked it to the following code now, just to catch a couple more edge cases:

/**
 * Soka - Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function soka_rename_coupon_field_on_cart( $translated_text, $text, $text_domain ) {
	// bail if not modifying frontend woocommerce text
	if ( is_admin() || 'woocommerce' !== $text_domain ) {
		return $translated_text;
	}
	if ( 'Coupon:' === $text ) {
		$translated_text = 'Voucher Code:';
	}

	if ('Coupon has been removed.' === $text){
		$translated_text = 'Voucher code has been removed.';
	}

	if ( 'Apply coupon' === $text ) {
		$translated_text = 'Redeem voucher';
	}

	if ( 'Coupon code' === $text ) {
		$translated_text = 'Voucher code';
	} 

	if ( 'If you have a coupon code, please apply it below.' === $text ) {
		$translated_text = 'If you have a voucher code, please apply it below.';
	} 

	return $translated_text;
}
add_filter( 'gettext', 'soka_rename_coupon_field_on_cart', 10, 3 );

/**
 * Soka - Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function soka_rename_coupon_message_on_checkout() {
	return 'Have a voucher code?' . ' <a href="#" class="showcoupon">' . __( 'Click here to enter your code', 'woocommerce' ) . '</a>.';
}
add_filter( 'woocommerce_checkout_coupon_message', 'soka_rename_coupon_message_on_checkout' );

/**
 * Soka - Change 'coupon' text to 'voucher'
 * @source https://gist.github.com/maxrice/8551024
 */
function soka_rename_coupon_label( $err, $err_code=null, $something=null ){
	$err = str_replace("Coupon","Voucher",$err);
	$err = str_replace("coupon","voucher",$err);
	return $err;
}
add_filter( 'woocommerce_coupon_error', 'soka_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_coupon_message', 'soka_rename_coupon_label', 10, 3 );
add_filter( 'woocommerce_cart_totals_coupon_label', 'soka_rename_coupon_label',10, 1 );

Bit late to the party, but is there a way to just hide / remove: 'Have a coupon? [Click here to enter your code]' and 'Coupon:'? I already made it so it automatically opens whenever you enter the checkout page. Thanks! :D