410Gone Consent Manager for Google Consent Mode and GTM is a lightweight CMP with a cookie banner, customization modal, and Google Consent Mode v2 + Google Tag Manager compatibility. It includes desktop/mobile previews in the admin, design and label settings, and multilingual support (Polylang, WPML, or via filter).
You can find the documentation in french for the plugin here : Official website for the consent managemet wordpress plugin(FR)

Key features

Configurable banner and “Customize” modal (titles, texts, buttons, links).
Editable palette (background, default text, accept/customize buttons) with color pickers.
Live desktop/mobile preview in the admin.
Automatic dataLayer/consent default injection in the <head> and conditional GTM loading.
Tracking modes for analytics loading: all inclusive, hybrid, or GTM-only.
Shortcode [cmp410gone_manage_cookies] to display a “Manage my cookies” link in content.
Translation-ready for Polylang/WPML, with the cmp410gone_translate_setting filter for other multilingual plugins.
Advanced options: consent retention, debug console, force display for testing.

Configuration

Design

Enable/disable the CMP.
Choose colors (background/default text, Accept/Customize buttons) via color pickers with live preview.

Labels

Set banner and modal titles/text, plus button labels.
Add privacy policy and cookie policy URLs.

Tracking & configuration

Choose the tracking mode (all inclusive, hybrid, GTM-only).
Enter the GTM container ID (e.g. GTM-XXXXXXX).
Add the GA4 measurement ID if needed (e.g. G-XXXXXXXXXX).
Adjust wait_for_update (ms) for the consent default if needed.

Advanced

Consent retention duration (days).
Debug mode (console) and force display for testing.

Translations

Save your texts in the main language.
Polylang: go to Languages String translations, group CMP 410gone, and translate each key (cmp410gone_banner_title, cmp410gone_btn_accept, etc.).
WPML: go to WPML String Translation, domain CMP 410gone, then translate the same keys.
Other plugins: hook into the cmp410gone_translate_setting filter to provide custom translations.

Frontend usage

The banner and modal are injected automatically (wp_head, wp_footer).
The shortcode [cmp410gone_manage_cookies label="Manage my cookies"] displays a management link.
Third-party scripts should be controlled via GTM to respect consent choices.

External services

This plugin can load Google Tag Manager when you provide a GTM Container ID in the settings.

Service: Google Tag Manager (gtm.js and noscript iframe).
Data sent: the GTM container ID and the consent state stored in the dataLayer.
When: on page load, only if GTM is enabled in the plugin settings.
Terms: https://marketingplatform.google.com/about/tag-manager/
Privacy: https://policies.google.com/privacy

Troubleshooting

If using JS optimization (e.g. WP Rocket), exclude cmp.js/410gone-consent-manager from “Delay JavaScript execution”, then clear cache.
Enable debug mode to follow the consent flow in the console.

More information: https://www.410-gone.fr/blog/plugin-cmp-wordpress-gratuit-consent-mode-v2-gtm.html