Narrativva SEM Integration For Seznam Wordpress Plugin - Rating, Reviews, Demo & Download
Plugin Description
This plugin installs Seznam Event Measurement sul.js on the frontend and sends selected server-side events directly from WordPress to Seznam SEM.
Supported frontend events:
- PageView
- ViewContent
- Search
- Contact from contact clicks or optional copied contact text
Supported server-side events:
- WooCommerce AddToCart, InitiateCheckout, AddPaymentInfo, and Purchase by default, with optional developer dataLayer Purchase mode
- Lead events (Contact Form 7, Elementor Forms, WPForms, dataLayer)
- WordPress/Woo CompleteRegistration
The plugin also captures sid, udid, and sznaiid, bridges Google Consent Mode v2 to SEM updateConsent, hashes S2S user data server-side, deduplicates duplicate form leads, and keeps S2S delivery logs with retry handling. Multi-premise routing keeps each Zboží.cz premise’s combined frontend SEM ID paired with its separate S2S SEM ID.
Optional features include Sklik Sandbox token support for S2S tests, frontend updateUserData for logged-in users after ad_user_data consent is granted, configurable WooCommerce product identifiers for matching Zboží.cz ITEM_ID, Action Scheduler support when available, and WP-Cron fallback for small sites.
Developers can connect any cookie banner/CMP through focused public hooks instead of relying on a plugin-specific cookie parser. Main integration points are nva_sem_s2s_disable_by_gdpr, nva_sem_s2s_consent_mode, nva_sem_s2s_hidden_identity_form_selectors, nva_sem_s2s_purchase_contents_item, nva_sem_s2s_phone_country_prefix, nva_sem_s2s_delivery_result, the nva_sem_s2s_track() PHP helper, and the browser object window.NvaSemS2SBridge.
Built-in CMP adapters are enabled for CookieYes and Cookiebot. CookieYes maps advertisement to ads consent, analytics/performance to analytics consent, and functional to functionality consent. Cookiebot maps marketing, statistics, and preferences to the matching Google Consent Mode v2 values. Developers can disable these adapters with nva_sem_s2s_disable_cookieyes_bridge and nva_sem_s2s_disable_cookiebot_bridge.
Plugin author: František Bujnovský, a web analyst and web developer who helps brands and businesses grow through web analytics, precise measurement, and development. Website: https://frantisekbujnovsky.com/. Email: bujnovskyf@gmail.com.
Privacy / External Services
This plugin depends on Seznam’s Event Measurement service. It loads an external script from Seznam (https://l.seznam.cz/sul.js) on the frontend to manage identity cookies and collect browser events. It also performs Server-to-Server (S2S) HTTP requests to Seznam (https://sem.seznam.cz/rtgconv) to dispatch conversion events. Data is sent when tracking is enabled and the relevant consent and event conditions are met.
Service documentation: https://napoveda.sklik.cz/merici-skripty/seznam-event-measurement/implementace-sem/server-to-server-s2s-mereni/
Seznam advertiser terms: https://napoveda.sklik.cz/pravidla/smluvni-podminky-pro-inzerenty/
Seznam privacy information: https://o-seznam.cz/pravni-informace/ochrana-udaju/
This is an independent open-source integration. It is not developed, endorsed, sponsored, or supported by Seznam.cz. Seznam and related marks belong to their respective owner.
To respect user privacy and comply with GDPR regulations, the plugin:
* Uses sid and udid only when available from sul.js, which requires ad_storage: granted.
* Captures sznaiid from the Sklik click URL parameter. It may temporarily store it in the plugin’s own first-party browser storage and sync it to WordPress/WooCommerce session/order metadata for later S2S attribution. Sklik SEM S2S documentation describes sznaiid as a click ID used for anonymous conversion modelling and states that it can be safely stored server-side without user consent.
* Sends s2s_headers with client IP address, User-Agent, and available Sec-CH-UA* Client Hints only when ad_storage consent is granted.
* Hashes personal user data (em, ph, fn, ln, etc.) using SHA-256 server-side before dispatching, and only sends it if ad_user_data consent is granted.
* Retains local S2S delivery logs for debugging. Payload previews are retained for diagnostics and are masked. Full payloads are temporarily stored while events are queued or retrying; after successful delivery or permanent failure they are cleared unless Debug Mode is enabled. Debug Mode caps log retention at 24 hours; turning Debug Mode off clears stored full payloads and debug-only log rows.
* Registers suggested Privacy Policy text in WordPress admin.
* Rate-limits the frontend Lead REST endpoint by source and client IP.
For Developers
Most sites do not need custom code. For custom integrations, the main extension points are:
nva_sem_s2s_track_lead( $args )for custom WordPress lead forms.nva_sem_s2s_track( $event_name, $event_data )for officially supported server-side SEM events, including valid non-WooCommerce Purchase payloads. Arbitrary event names are rejected.window.NvaSemS2SBridge.trackLead(args)for browser-triggered custom Lead tracking delivered through the plugin S2S endpoint.nva_sem_s2s_consent_modefor custom cookie banners or CMPs.window.NvaSemS2SBridge.setConsent(consentMode)for frontend consent changes from a custom banner.nva_sem_s2s_disable_by_gdprto halt all plugin tracking from site privacy logic.nva_sem_s2s_hidden_identity_form_selectorsto add exact custom forms that should receive sid/udid/sznaiid hidden fields.nva_sem_s2s_purchase_contents_itemto customize WooCommerce product ITEM_ID mapping.nva_sem_s2s_delivery_resultto react to S2S delivery results in custom monitoring or logging.nva_sem_s2s_premise_keyto select a configured Zboží.cz premise when URL matching is not enough.nva_sem_s2s_premise_routeto customize the final pair of frontend and S2S SEM IDs.
Hidden identity fields are intentionally limited to known form types by default. The broad all-forms mode is disabled in the admin UI for production safety.
Screenshots
No screenshots provided
