Klarna Checkout is a complete online checkout solution designed to increase sales and customer loyalty, including Pay now, Pay later, and Financing options.

Demo : https://graceofsweden.se/module/klarnaofficial/checkoutklarnakco
in addon very high price see here : https://addons.prestashop.com/en/express-checkout-process/90132-klarna-checkout.html

Lazy Loading will increase website speed by loading all the images after your website load completely on customer's end.
Show Animated GIF Image during the loading of your website with each product. You can set time interval to delay in loading images

Page load times can be significantly improved by asking visitors to save and reuse the files included in your website

MailChimp Sync for Prestashop customers and Newsleter subscribers . Automatically subscribe customers to your MailChimp list.

 Mass product Friendly URLs regenerate Regenerate missing products & images links - by shop and language - PrestaShop . This module a few languages added to your shop and since Product Friendly URL generate by shop and language, now I would like to generate SEO. missing product images url and product url generate , Missing products link generate  automatically. 

Minify HTML CSS JS is a very small and efficient extension. It will minify HTML including inline CSS and JS code.

Minify HTML Module will compress your HTML by shortening URLs and removing standard comments and whitespace; including new lines, carriage returns, tabs and excess spaces.

Display New Products in Home page Product page bottom and every page left right column with responsive and slider. Best module to Show New product's

All checkout steps appear together on a single page for customers to modify any step at once.Responsive and flexible checkout page designSupport All Payment Methods

Prestashop Clean URL's - remove ID's language prefix from URL. PrestaShop Seo URL Module SEO friendly your website and removing auto generated IDs/numbers from URLs of your products, categories, manufacturer & other pages. auto redirects old URLs to new URLs

Overview

An easy to use module to disable show specific category for specific languages in store front. In Backoffice Every category have a disable or enable category by multi language 

Newsletter Popup is a powerful and flexible module create lightbox popups that help you get more newsletter subscribers, promote new products, deliver special offers.