Advanced CMS Filtering in Webflow: Finsweet Attributes & URL Sync (2025 Guide)

Learn to stack category, price-range and search filters, keep state in the URL, and animate results—all in Webflow 2025 without custom JavaScript.

Published July 2025 • 10 min read

Why native-feeling filters matter in 2025

From SaaS template libraries to real-estate portals, users expect instant, multi-facet filtering. A slow reload costs clicks—and revenue. Webflow’s built-in Collection List is powerful, but out of the box it lacks dynamic filters. Enter Finsweet Attributes 2.0 (released March 2025): drop-in HTML attributes that deliver MixItUp-level filtering at a fraction of the bundle size—no custom JS.

1 — Set up your CMS collection

Example: a Templates collection with fields:

Category (Reference → Categories)
Price (Number)
Tags (Multi-ref → Tags)
Thumbnail (Image)

Publish at least 12 items so filters have something to toggle.

2 — Install Finsweet Attributes

Add the CDN one-liner in Site Settings → Custom Code → <head>:

<script src="https://cdn.jsdelivr.net/npm/@finsweet/attributes@2/fs-attributes.js" defer></script>

File size: 7 kB gzipped.

3 — Mark up the Collection List

Select the Collection List wrapper → Add Attribute:

fs-cmsfilter="list" id="templateList"

On each item link add:

fs-cmsfilter-field="category" fs-cmsfilter-field="price" fs-cmsfilter-field="tags"

Webflow compiles these into static HTML—zero runtime DOM queries.

4 — Build the filter UI

Category buttons

<button fs-cmsfilter-element="filter" fs-cmsfilter-field="category" fs-cmsfilter-value="saas">SaaS</button>

Price range slider

<input type="range" min="0" max="199" value="0" id="priceRange"
  fs-cmsfilter-element="range" fs-cmsfilter-field="price">

Search box

<input type="search" placeholder="Search templates" fs-cmsfilter-element="search">

Add basic Tailwind / Client-First classes for styling—attributes ignore them.

5 — Enable URL sync for sharable filters

Newest attribute in 2.0:

fs-cmsfilter-deeplink="url"

Place it on the list wrapper. Now selecting “SaaS” + price ≤ 49 updates the URL to ?category=saas&price=0-49. Users can bookmark or share, and Google can crawl pre-filtered pages for long-tail SEO.

6 — Animate results for slick UX

Wrap each card in a div .card-anim. Add:

fs-cmsfilter-animation="fade" fs-cmsfilter-duration="300"

Items fade/scale smoothly when filters change—no page jump, no reflow.

7 — Hook into Logic for tracking

Create a Logic Flow:

Trigger: Page Viewed → Condition query.category exists
Action: Send HTTP POST to GA4 Measurement Protocol (event=filter_apply)

You’ll learn which filters correlate with conversions.

8 — Performance tips

Paginate large lists (Limit = 24) then add Finsweet’s “Load More” attribute for infinite scroll.
Thumbnail images: enable responsive image + lazy-load.
Remove jQuery if you still load it—Attributes is vanilla ES6.

9 — Common pitfalls

Duplicate id values—each list needs a unique one.
Mismatch between value and CMS slug (capitalisation matters).
Forgetting to publish after changing attributes—Designer preview won’t show filters.

10 — Next-level ideas

Save filters to localStorage—auto-reapply on return visit.
Sync with CMS Sort attribute for price ASC/DESC toggle.
Combine with Memberships to hide premium items for logged-out users.

Conclusion

With less than 20 attributes and zero custom JavaScript you’ve shipped an SPA-smooth filter experience—complete with deep links and analytics. In 2025, that’s table stakes for content-heavy Webflow sites. Try Attributes 2.0 on your next marketplace or blog archive and watch engagement (and SEO) climb.

CTO & Founder