HSTS is HTTP Strict Transport Security, a means to enforce using SSL even if the user accesses the site through HTTP and not HTTPS.
More Plugins
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DJ-Accessibility – Accessibility Plugin
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Bottom Admin Toolbar
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Flat Login
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Site Setup Wizard
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Archive Control
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Variation Shop Product Sliders
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Catalog & Enquiry For WooCommerce
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Display SQL Stats
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Days Ago Post Date
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BasisBijbel
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Latest Post Link Shortcode
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Quick Checkout, Direct Checkout Button, Quick View for WooCommerce
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Frontend HTTP Auth Protection
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Local Business Schema (JSON-LD) Lite
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Auto Assign product to sale category
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Popup Creator – Popups for HTML, Contact Us, Subscription, etc…
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Coupon Exporter for WooCommerce
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WP Amazon Ads
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Magical Shop Builder – WooCommerce Template Builder for Elementor | Shop, Cart, Checkout & Product Page Builder
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C4D Plugin Manager