The Squarespace Sidebar Plugin is a premium third-party add-on created to bring sidebar functionality to Squarespace, a feature many users miss especially in newer templates like 7.1 where sidebars aren’t available by default. This plugin makes it easy to add persistent, attractive sidebars to pages, blog posts, or site-wide layouts — something that standard Squarespace tools don’t natively provide. sqspthemes.com
What It Does
Squarespace doesn’t offer built-in sidebar support on most templates — including the popular Brine family and the unified 7.1 platform — meaning site owners often have to resort to coding workarounds. The Squarespace Sidebar Plugin fills that gap by letting you create a dedicated sidebar section that you can control and customize independently of your main content. Kate Scott
Key Features
Add Sidebars Anywhere
Insert a sidebar on blog pages, galleries, product pages, or any layout where you want extra navigational or promotional space — an option many templates lack by default. Kate Scott
Fully Customizable Layout
Adjust sidebar width, position (left/right), margins, padding, background, borders, and more without having to write your own CSS. Kate Scott
Sticky Sidebars
Make your sidebar stay visible as users scroll, boosting visibility for key content like CTAs, ads, newsletters, or navigation links. sqspthemes.com
Multiple Sidebars
Add more than one sidebar on a single page or create different sidebars for different sections of your site — such as one for blog posts and another for product pages. sqspthemes.com
Show/Hide on Specific Pages
Control where each sidebar appears so you can tailor the user experience on a page-by-page basis. sqspthemes.com
Works with Squarespace 7.0 & 7.1
Compatible with both major Squarespace versions and all templates. sqspthemes.com
Why It’s Useful
Better User Navigation: Sidebars make it easier for visitors to find recent posts, categories, CTAs, or key site sections. Kate Scott
Design Flexibility: Customize look and placement without hiring a developer or writing custom code. sqspthemes.com
Professional Layouts: Give your Squarespace site a more blog-like or magazine-style layout that’s familiar to readers. Kate Scott
Fast Updates: Sidebar content can be controlled from a single page or area, making edits quick and uniform across your site. Kate Scott
Pricing & Availability
The Squarespace Sidebar Plugin is a premium add-on — it’s not free and is downloaded directly from the developer’s site rather than an app store. Pricing typically begins around $59 USD for a single-site license, with options for broader licensing for multiple sites. sqspthemes.com