How to change default tab in product page in Magento 2?

In Magento 2, the product detail page’s default name is “Details”

Let’s say if we want to change this tab name from “Details” to “Product Information”

What we have to do is to override layout xml file from Vendor to theme.

We need to create catalog_product_view.xml file in our custom theme on app/design/frontend/Magemonkeys/mytheme/Magento_Catalog/layout and add below code

<?xml version="1.0"?>
<page layout="1column" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="product.info.details">    
            <referenceBlock name="product.info.description">
                <arguments>
                    <argument name="title" translate="true" xsi:type="string">Product Information</argument>
                </arguments>
            </referenceBlock>
        </referenceBlock>
    </body>
</page>

Now we need to flush the cache and check-in product detail page.

That’s it.