HubSpot Theme Scanner

by bereto · bereto.dev · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 17 Oct 2026

Inspect the active tab for HubSpot CMS signals: portal ID, inferred theme, module paths, and HubFS asset count.

Users

−3 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#175K

#146K among extensions

Version

1.0.0

updated 27 Aug 2026

Users

monthly, 4 months

Latest, 17 Oct 2026: 13 usersMove the mouse over the chart for any month

Ratings count

monthly, 4 months

Latest, 17 Oct 2026: 2 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About HubSpot Theme Scanner

HubSpot Theme Scanner is a developer tool for anyone working on HubSpot CMS websites—implementers, agencies, and engineers who need quick answers from the page already open in the browser. What it does: • Detects whether the page likely uses HubSpot CMS (COS module markup) versus HubSpot marketing scripts only • Infers the primary CMS/platform when possible (WordPress, Drupal, Webflow, etc.) from public page signals • Shows an inferred HubSpot portal ID when it appears in the DOM or asset URLs • On HubSpot CMS pages with HubSpot debug enabled (?hsDebug=true), surfaces theme name hints, module path lists, and a count of unique HubFS (/hubfs/) assets How to use: 1. Open the site you want to inspect in a normal browser tab. 2. Click the HubSpot Theme Scanner icon. 3. For theme and module details on HubSpot CMS, reload with ?hsDebug=true in the URL, or use “Get more details” to reload with debug enabled, then open the extension again. Privacy Scanning reads the rendered HTML of the tab you chose. Results stay on your device and are shown only in the extension popup. This extension does not send scan data to the developer’s servers. Disclaimer This extension is not affiliated with or endorsed by HubSpot. Theme and CMS detection use heuristics on public page content; treat results as indicative, not authoritative.