Folio is a storefront theme for independent bookshops, chains with a web shop, stationers and office-supply stores, single brand or Multi-Vendor marketplaces with publishers and makers.
Four styles: Library (ivory paper, library green and walnut shelves), Stationer (white, pen blue and highlighter yellow), Lamplight (a dark reading room with brass) and Kraft (kraft paper, oxblood and stitched shelves).
Four styles, one theme
Each style changes the ground, bands, type weight and card treatment, not only the accent colour. Open any of them in the live demo.
Folio answers what readers and office buyers ask before they order:
Search by title, author, ISBN or SKU
Format chips and a format bar on every list
Author and series lines on every card
Look inside pages on books
Staff picks with shelf-talker notes
A top 10 chart and a book of the month
Bulk prices and a quick reorder line
Full page cache safe, text contrast of at least 4.5:1
How it works
Install the package in Add-ons: it adds the Folio theme without touching your storefront. Activate Folio in Website, Themes and pick a style. The next admin page adds the demo store, so every section is filled at once.
Authors, publishers, series, formats, reading ages and ISBNs are product features; formats and pack sizes for sale are normal product options and bulk prices are quantity discounts. Look inside uses the product images.
Features
Search by title, author, ISBN or SKU with a scope select
Ask the catalogue card with hints from your catalogue
Cover shelves with covers standing on a shelf ledge
Series line, author link and format chips on every card
Staff pick ribbons and shelf-talker notes
Round sale stickers and New, Coming soon and Signed tabs
Format bar on category and search pages
Author header on author lists
Look inside button and page strip on books
Catalogue card with ISBN, publisher, pages and reading age
Bulk prices as a price tier strip
Quick reorder line with a copyable SKU
Office band with a reorder pad
Spine rail for departments
Top 10 chart with a book of the month
Hero slider with a ribbon and a price sticker
Multi-Vendor seller cards and vendor page header
Phone layout with bottom bar, filter sheet and sticky add to cart
Installs with full demo content
Four styles: Library, Stationer, Lamplight and Kraft
Child of Responsive: add-on hooks keep working
CS-Cart and Multi-Vendor 4.17.2 to 4.21.x
What you get
Package
kv_theme_folio-1.0.0.zip: the theme and its wrapper add-on, installed through Add-ons → Manage add-ons. Activate it in Website → Themes and pick a style.
Editions
CS-Cart, CS-Cart Ultimate, Multi-Vendor and Multi-Vendor Ultimate 4.17.2 – 4.21.x, one package. A child theme of Responsive: no core files are changed and add-on templates keep working.
Updates & support
12 months included. Updates keep the theme files you changed; your layouts are never replaced.
License
1 production installation; subdomains, staging, dev and localhost are free. The theme checks its license for your domain once a day from the admin panel. Without a valid license the storefront shows the standard Responsive look instead of the Folio design; cart, checkout and orders keep working. How licensing works
Compatibility
We list only the builds we install and test on. “Tested” means the full test plan was run on that build; “Supported” means the build is inside the supported range and uses the same hooks.
CS-Cart version and edition compatibility
CS-Cart version
CS-Cart
CS-Cart Ultimate
Multi-Vendor
Multi-Vendor Ultimate
4.22 and later
Testing next
Testing next
Testing next
Testing next
4.21.2
Supported
Supported
Tested
Supported
4.20.x
Supported
Supported
Supported
Supported
4.19.x
Supported
Supported
Supported
Supported
4.18.x
Supported
Supported
Supported
Supported
4.17.2
Tested
Supported
Tested
Supported
Before 4.17.2
Not supported
Not supported
Not supported
Not supported
Last tested build: Multi-Vendor 4.21.2, Oct 24, 2026Tested on: CS-Cart 4.17.2, Multi-Vendor 4.17.2, Multi-Vendor 4.21.2
Requirements
Platform
CS-Cart, CS-Cart Ultimate, Multi-Vendor or Multi-Vendor Ultimate 4.17.2 – 4.21.x
Requirement
For the hero slider and the promo banners, the core Banners add-on; for the journal, Blog; for reader
Requirement
Administrator access to the admin panel
Core changes
None. Hooks and template overrides only
1.0.0
Oct 24, 2026
Latest
Added 11
Folio theme for CS-Cart, CS-Cart Ultimate, Multi-Vendor and Multi-Vendor Ultimate 4.17.2 - 4.21.x: a classic,
Search by title, author, ISBN or SKU: the standard product search also finds author, publisher and series names, the
Cover cards with the series line, "by Author" link, format chips, staff pick ribbon, sale sticker and New, Coming soon
Format bar (All formats, Hardcover, Paperback, E-book, Audiobook with counts) on category and search pages and a
Look inside: a bookmark button on the cover opens the image viewer on the first inside page; the thumbnails become a
Tested on CS-Cart 4.17.2, Multi-Vendor 4.17.2, Multi-Vendor 4.21.2. First release.
Do I need special product fields for authors, series and formats?
No. Folio reads authors, publishers, series, formats, genres, reading ages, ISBNs and pack sizes from standard product features, formats and pack sizes for sale from normal product options, and bulk prices from quantity discounts. You edit them on the product page or in the product import. See Usage.
The search does not find an author.
Check that Search by author, ISBN and SKU is on and that the author is a variant of the Author feature (code FO_AUTHOR or a feature named Author). Authors typed into the description are found by the standard search anyway.
Can shoppers search by ISBN without hyphens?
Yes. Digits are matched with or without hyphens and spaces in the product code and in the ISBN feature.
The Look inside bookmark is missing.
The product needs an Author or ISBN value and at least two images (the cover plus inside pages), and the setting Look inside must be on.
My product images are square photos. Do they work?
Yes. Images stand on the shelf at the bottom of a portrait well and are never cropped. Portrait covers (3:4 or 2:3) on a transparent or matching background look best.
How do I make a staff pick?
Fill the text feature Staff pick with the note and the signature after a dash. See Usage.
Where do the bulk prices come from?
From the standard quantity discounts of the product (all customer groups or the ones you choose).
Does Folio work with the full page cache of CS-Cart 4.21?
Yes. Theme output holds only catalogue data; Look inside, the scope placeholders and the SKU copy button run in the shopper's browser, and basket and wish list counters come from the standard blocks.
What happens when the licence expires?
The storefront shows the standard Responsive look; your store keeps selling. See Configuration.
A Swiss-editorial storefront theme with a shop-window homepage, oversized type and four bold styles, built on Responsive so every add-on keeps working.
A department-store theme for large catalogues: colour-coded departments, a department list beside the hero, tabbed product blocks and a sticky buy box.