UTM Phone Switcher – WordPress plugins

This demo shows how UTM Phone Switcher changes phone text and click-to-call links for visitors arriving from different campaigns. The sample numbers are fictional.

WordPress compatibility: 6.3–7.1.3.

Try a campaign link

Choose a campaign to see the sample numbers update. Contact point 1 gets its own number; Contact points 2 and 3 share another.

Open Google campaign — utm_source=google sets Contact point 1 to +1 202 555 0101 and Contacts 2 and 3 to +1 202 555 0111.
Open Facebook campaign — utm_source=facebook sets Contact point 1 to +1 202 555 0102 and Contacts 2 and 3 to +1 202 555 0112.
Open partner campaign — utm_campaign=partner sets Contact point 1 to +1 202 555 0103 and Contacts 2 and 3 to +1 202 555 0113.

Sample contact points

Contact point 1: +1 202 555 0100

Contact point 2: +1 202 555 0100

Contact point 3: +1 202 555 0100

How the example is configured

A rule can use an exact parameter name or * as a wildcard. Leave the value blank to match the parameter regardless of its value.
The selector .demo-phone-primary targets Contact point 1; .demo-phone-shared targets Contacts 2 and 3.
Each campaign has two matching rules. A selector can target one phone or any group of phones that should share a number.
The selected rule ID is remembered in a first-party cookie for 14 days, so the number stays consistent on later pages in this browser.

In your own site, add the selector class to the phone element and create a rule under Settings → UTM Phone Switcher. The plugin runs in the visitor’s browser and does not send campaign data to a third-party service.

Screenshots

View the campaign rules and phone number replacement settings.

UTM Phone Switcher settings and campaign rules — Plugin settings with sample campaign rules

UTM Phone Switcher campaign consent settings (Russian interface) — Campaign-memory consent settings (interface shown in Russian)

UTM Phone Switcher settings for cookie consent categories and a custom consent signal — Campaign-cookie consent controls

Frequently Asked Questions

Is UTM Phone Switcher free?

Yes. UTM Phone Switcher is completely free. There is no paid or Premium version.

Which URL parameters can it use?

Any query parameter can be used, including utm_source, utm_medium, utm_campaign, ref, or gclid. A rule matches only when both the parameter name and its value match exactly.

Can one rule update a phone number in several places?

Yes. A CSS selector can match several phone elements, so one rule can update every location that should show the same number. You can use one shared class or a comma-separated selector, such as .header-phone, .footer-phone. The plugin also reapplies rules to phone elements inserted later by a page builder.

Can different locations show different numbers for the same campaign?

Yes. Create a separate rule for each location, using the same campaign parameter and value but a different CSS selector and replacement number. For example, the header and contact section can show different numbers for the same utm_source=google visit. If multiple rules target the same element, the first matching rule in the settings list wins.

Will it update click-to-call links too?

Yes, if the selector targets the phone link itself — an <a> element with a tel: URL. The visible number and the link used to start the call are updated together.

Will the campaign number remain on other pages?

Yes. The plugin remembers matching rule IDs in a first-party cookie and applies the number on later pages. The default duration is 14 days; you can set it to 0 for the current browser session only or choose from 1 to 365 days.

Can UTM Phone Switcher handle consent withdrawal for the campaign-memory cookie?

Yes. When connected to your cookie banner through the WordPress Consent API or a custom signal, UTM Phone Switcher follows the category you select. If the visitor refuses that category or withdraws consent, the plugin deletes and stops using the campaign-memory cookie. The number still changes while a matching campaign URL is open; without that URL on a later page, the original number is shown. The plugin follows your banner's signal; it does not decide whether this cookie legally requires consent or certify GDPR compliance.

Does the plugin change phone numbers saved in WordPress?

No. It changes matching text and click-to-call links in the visitor’s browser. It does not edit the saved page or post content in WordPress.

Does it record calls or require a call-tracking account?

No. The plugin displays the phone numbers you configure for matching campaigns. It does not provide phone numbers, record calls, or send visitor data to an external service.