To create a custom theme in Magento 2, start by accessing your Magento installation via FTP or SSH and navigate to app/design/frontend/. Create a new directory for your theme, such as YourCompany/YourTheme. Next, within this directory, create a file named theme.xml to define your theme.
In this file, specify your theme’s title and parent theme. Alongside theme.xml, create a registration.php file to register your theme with Magento, making it available for selection in the Admin panel.
Once your theme is set up, create essential directories like web, templates, and layout within your theme directory. Copy default layout and template files from Magento’s module directories into your theme folder and customize them as needed. After setting up your files, log in to the Magento Admin panel and navigate to “Content > Design > Configuration”.
Select the store view where you want to apply the theme and choose your custom theme from the dropdown menu.To finalize, clear the cache by going to “System > Cache Management” and flushing the Magento cache. Then, run the static content deployment command from your Magento root directory to update your theme’s assets. Finally, visit your store’s frontend to view your custom theme and make any necessary adjustments to ensure it meets your design expectations.By following these steps, you’ll successfully create and apply a custom theme in Magento 2, allowing you to personalize your store’s appearance to better reflect your brand.
For detailed blog :https://meetanshi.com/blog/create-custom-magento-2-theme/