Blogger Platform

Blogger (Google's free blogging platform) lets you edit your theme's HTML directly, so adding CookieScan is straightforward. This guide walks through it step by step.

Before you start

You will need:

An active CookieScan subscription (view plans)
Your banner installation code from the CookieScan dashboard (Cookie Banner → Install Code)
Admin access to your Blogger dashboard

The install code looks like this:

<script src="https://banner.cookiescan.com/js?id=YOUR-COOKIESCAN-ID"></script>

Replace YOUR-COOKIESCAN-ID with the code from your dashboard.

Install via Theme HTML (the only method)

Blogger doesn't have a dedicated Custom Code feature – you add scripts by editing the theme HTML directly.

Step 1 – Back up your theme

Log into Blogger
In the left sidebar, click Theme
Click the arrow next to the Customize button
Select Backup
Download the .xml file and keep it safe – you can restore it if anything goes wrong

Step 2 – Open Edit HTML

In the Theme page, click the arrow next to Customize again
Select Edit HTML
You will see the full HTML of your Blogger template

Step 3 – Add the CookieScan script

Press Ctrl+F (Cmd+F on Mac) to open Find
Search for <head>
Click just after the opening <head> tag

Press Enter to create a new line and paste:

<script src="https://banner.cookiescan.com/js?id=YOUR-COOKIESCAN-ID"></script>

Your code should look like this:

<head>
<script src="https://banner.cookiescan.com/js?id=YOUR-COOKIESCAN-ID"></script>
...existing head content...
</head>

Important: Blogger uses XHTML, so the script must be properly closed (it is, but don't add any malformed HTML). If you get an "Error parsing XML" message, check for any unclosed tags.

Step 4 – Save

Click Save (disk icon at the top of the HTML editor)
If you see "Error parsing XML", revert the change and double-check the script tag is intact and properly formed

Step 5 – Verify

Visit your blog in a new incognito window
The CookieScan banner should appear

If you use Google Tag Manager on Blogger

If you've already added GTM to your Blogger theme:

In CookieScan, open Cookie Banner → Install Code and switch to the Google Tag Manager Install tab
Copy your CookieScan ID
In GTM, go to Templates → Search Gallery and add the CookieScan template
Create a tag using the template, paste your ID
Trigger: Consent Initialization – All Pages
Submit and publish

Verify the installation

Visit your blog in a new incognito window
The CookieScan banner should appear
Open DevTools (F12) → Network tab → filter by cookiescan
Confirm banner.cookiescan.com loaded

Or use Verify Installation in your CookieScan dashboard.

What happens next

CookieScan scans your Blogger blog and detects all cookies (Google Analytics, AdSense, comment system, etc.)
Discovered cookies appear in Cookie Manager → Unclassified to categorise
The banner blocks non-essential cookies until user consents
Every consent decision is logged in Consent Log

Troubleshooting

"Error parsing XML" when saving

Blogger validates HTML strictly – the script tag must be properly formed
If you pasted code with smart-quotes (“”) instead of straight quotes (""), Blogger will reject it
Try pasting from a plain text editor

Banner not appearing

Check the script is inside the <head> section, not elsewhere
Clear your browser cache
View page source (Ctrl+U) and confirm the script is present

AdSense / Analytics still firing cookies

Google AdSense and Google Analytics load from Blogger's built-in integrations
Run Cookie Manager → Rescan Domain to detect them
Categorise AdSense cookies as Marketing and GA cookies as Statistics
Consider enabling Google Consent Mode v2 in your CookieScan dashboard for better integration

Full documentation

For detailed setup help, see the support guide linked in your CookieScan dashboard, or visit our support guides.