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Crumbler – Cookie Consent
Crumbler – Cookie Consent

Crumbler – Cookie Consent

0/5 (0 ratings) — active installs Updated Jun 22, 2026
consent managementcookie bannercookie consentGDPRgoogle consent mode
Download v1.0.0 Plugin Website
The Crumbler settings page: enter your Site Key and see the live connection status.

The Crumbler settings page: enter your Site Key and see the live connection status.

Crumbler is a hosted cookie consent service. This free, open-source plugin is the WordPress connector for it: enter your Site Key, enable the widget, done. The plugin provides:

  • Cookie consent banner with configurable design
  • Automatic script blocking before consent
  • Automatic iframe blocking (e.g. YouTube, Google Maps)
  • Cookie cleanup for non-accepted categories
  • Google Consent Mode v2 support
  • Cookie declaration (Gutenberg block and shortcode) with all detected services and cookies
  • Multi-language support (DE, FR, IT, EN)

Free plugin, paid service (no trialware)

The plugin itself is free and completely open source — none of its functionality is locked, time-limited or restricted to a paid tier. The cookie consent service behind it (operated by Compresso AG) requires a Crumbler account and subscription; a free trial is available. See External services below for exactly what data is exchanged.

How it works

  1. Create an account at crumbler.ch
  2. Add your domain and copy the Site Key
  3. Install and activate this plugin
  4. Enter the Site Key under Settings > Crumbler
  5. Enable the widget — done!

The settings screen shows a live connection status, so you can see right away whether your domain is set up and active in Crumbler.

External services

This plugin connects your website to Crumbler, a hosted cookie consent service operated by Compresso AG. The plugin is a free, open-source client; the service requires a Crumbler account and subscription (a free trial is available). The plugin contains no locked or paid functionality.

The plugin does not contact the service until you enter a Site Key and enable the widget. It communicates with the Crumbler service (cmp.compresso.ch) in three ways:

  1. Consent widget script. On every front-end page (once enabled and a Site Key is set) the plugin loads the consent widget from https://cmp.compresso.ch/widget/cmp.min.js. The widget renders the consent banner, blocks third-party scripts and iframes before consent, applies Google Consent Mode v2, and records the visitor’s anonymised consent decision with the service. Data sent: your Site Key and the visitor’s consent interaction.

  2. Cookie declaration data. When the cookie declaration block or shortcode is displayed, the visitor’s browser requests the list of detected services and cookies from https://cmp.compresso.ch/api/public/cookies. Data sent: your Site Key and the requested language.

  3. Connection status check. On the plugin’s settings screen (administrators only), the plugin requests https://cmp.compresso.ch/api/public/config to show whether your domain is set up and active. Data sent: your Site Key and your site’s domain. The result is cached temporarily.

No data is sent to any party other than the Crumbler service.

  • Service provider: Compresso AG
  • Terms of Service: https://crumbler.ch/agb.php
  • Privacy Policy: https://crumbler.ch/datenschutz.php

Credits

This plugin bundles the Press Start 2P font by Cody Boisclair, licensed under the SIL Open Font License 1.1. The full license is included at assets/fonts/Press-Start-2P-OFL.txt.