How to Migrate from Cookiebot to CookieBeam (Step by Step)

Switching CMPs Is More Than Swapping a Script Tag

Moving from Cookiebot to CookieBeam is straightforward if you plan it, and risky if you just delete one script and paste in another. Do it carelessly and you can lose years of consent records, break Google Consent Mode, or leave orphaned data-cookieconsent attributes that stop your tags from firing at all. This guide walks through a Cookiebot-specific migration: exactly which cookie and markup to look for, how to map Cookiebot's categories, and how to cut over cleanly.

CookieBeam uses scanner evidence and reviewed classifications for supported script and connection gates. Hardcoded scripts requiring prior consent still need inert markup. Migrate existing blocking attributes deliberately and verify requests before and after consent; swapping the loader alone is insufficient.

This is the vendor-specific version of our general migrate your CMP without losing consent guide. If you're still deciding, start with CookieBeam vs Cookiebot.

Step 1: Map Cookiebot Categories to CookieBeam

Cookiebot's four-category model maps cleanly onto CookieBeam's categories. Necessary stays necessary. Preferences becomes functional/preferences. Statistics becomes analytics. Marketing becomes marketing/advertising. Write the mapping down before you configure anything, because a category mismatch is the most common cause of scripts firing without consent (or never firing) after a migration.

Pay special attention to any script you had marked Necessary in Cookiebot. Migrations are a good moment to re-check those, tools sometimes get miscategorised as strictly necessary when they're actually analytics or marketing. Our guide on automated scanning vs manual audits covers how to verify categorisation.

Step 2: Preserve Consent Mode Signal Mapping

If you run Google tags, Cookiebot has been translating its categories into Consent Mode signals, typically Statistics into analytics_storage and Marketing into the ad_storage, ad_user_data, and ad_personalization signals, with Necessary always granting security_storage. CookieBeam sends the same Consent Mode v2 signals natively, but you must confirm the mapping matches so your Google Ads conversion modelling and GA4 don't lose data at cutover.

Check whether your Consent Mode was wired through GTM's built-in consent settings or through Cookiebot's template. Either way, verify that CookieBeam fires the default (denied) state before any Google tag loads, and updates it on the user's choice. See advanced vs basic Consent Mode for the timing details that matter here.

Step 3: Set Up CookieBeam and Scan

Create your CookieBeam banner and run a fresh scan. CookieBeam's headless browser scanner captures cookies, scripts, and network connections (something Cookiebot's scanner doesn't track). Compare the results to the Cookiebot declaration you exported. The scanner feeds a multi-layer classification pipeline: URL/domain pattern matching against 140+ known tracking domains, inline script content analysis for 23+ vendor patterns (GTM, Meta Pixel, Hotjar, etc.), external cookie database lookups, and WordPress plugin/theme detection across ~300 known sources. Review the auto-classifications in the dashboard, adjust anything the pipeline got wrong, and publish. This scan inventory becomes your script map, the basis for CookieBeam's automatic blocking.

Configure your categories per the mapping from Step 1, set your Consent Mode defaults, and configure regional rules. CookieBeam's per-country regional engine means one banner can cover GDPR, CCPA, LGPD, PIPEDA, and UK GDPR, so this is a good moment to tighten region behavior if Cookiebot was showing one banner everywhere.

Choose your compliance mode. Learning mode (the default) allows unknown scripts to run while building your inventory, so nothing breaks while you get your categories right. Strict mode blocks all unclassified scripts by default (fail-closed), which is the right choice once your inventory is complete and you want maximum compliance. You can start in Learning mode and switch to Strict later.

If you handle US visitors, configure GPC/DNT enforcement. CookieBeam detects Global Privacy Control and Do Not Track signals with per-region rules: in the EU, GPC sets default deny but explicit banner opt-in can override it. In US opt-out states, a privacy signal opt-out follows CPRA 7025(b)(3), requiring a deliberate, right-specific in-banner opt-in to override (a generic Accept All won't cut it). Cookiebot doesn't enforce privacy signals this way.

Step 4: Convert Existing Blocking Markup

Keep hardcoded scripts that require prior consent inert during the migration. Use type="text/plain", replace the previous category attribute with data-category="analytics", data-category="marketing", or data-category="preferences", and move external URLs from src to data-src.

If the previous setup rewrote scripts automatically, inspect the original page templates as well as the rendered DOM. Removing the previous loader does not make ordinary hardcoded scripts safe: convert them to inert markup before testing the replacement. Runtime interception supplements this for scripts created dynamically after CookieBeam loads.

Replace the old declaration embed with the current declaration and provide a working privacy-settings action on the customer site. Test a fresh visit, rejection, acceptance, and withdrawal. Confirm both script activation and outbound requests for each intended category.

CookieBeam also offers connection controls for fetch, XMLHttpRequest, sendBeacon, WebSocket, and EventSource. These check supported requests against their published classification, including explicitly classified first-party tracking endpoints. A blocked fetch receives a synthetic 204 response; other transports use their respective failure behavior.

Step 5: Run in Parallel on Staging, Then Cut Over

Deploy CookieBeam on a staging environment first and test the full flow: accept unblocks everything, reject blocks non-essential scripts and connections, and partial choices behave per category. Open DevTools Network tab and verify that rejected categories produce no outbound requests (you'll see X-CookieBeam-Blocked headers on intercepted connections). Confirm Consent Mode signals fire in the right order and that your GTM tags respect them. CookieBeam's environment model lets you validate on dev/staging before touching production.

When you cut over, replace the Cookiebot <script id="Cookiebot"> loader with CookieBeam's snippet in the same position (as early as possible in the <head>, before analytics and ad tags). Decide how to treat returning visitors who already hold a CookieConsent cookie: the cleanest and most defensible option is to let CookieBeam establish fresh consent under the new banner. If you need continuity, you can read the old cookie's per-category state and seed CookieBeam accordingly, just document the logic for your records.

Common Cookiebot Migration Pitfalls

• Leaving data-cookieconsent or type="text/plain" in place. These are Cookiebot-specific and will silently break script execution once Cookiebot is removed.
• Losing the consent archive. Cancel Cookiebot before exporting logs and you may lose the records you need to demonstrate historical consent under GDPR.
• Consent Mode signal mismatch. If CookieBeam's category-to-signal mapping doesn't match what Cookiebot sent, your Google conversion data can quietly degrade.
• Forgetting the declaration embed. An orphaned Cookiebot CookieDeclaration on your policy page will show stale data or a broken widget.

For the underlying export, mapping, and parallel-run mechanics that apply to any CMP switch, keep our general CMP migration guide open alongside this one, and confirm the end state against the GDPR cookie compliance checklist.

The Bottom Line

A Cookiebot to CookieBeam migration is low-risk when you do it in order: export consent records and the cookie declaration first, map the four Cookiebot categories, preserve the Consent Mode signal mapping, strip Cookiebot's blocking markup, validate on staging, then cut over and monitor. The two failure modes that catch people are losing the consent archive and leaving data-cookieconsent attributes behind.

After migration, keep hardcoded non-essential scripts inert and review connection classifications, including first-party tracking endpoints. Runtime drift reports depend on the enabled reporting settings and their sampling policy. Test rejection, acceptance, and withdrawal on staging and production; scanner evidence and a successful installation do not certify compliance.

Reference: Google's Consent Mode developer documentation for signal names and timing.