If you've browsed the web in the last few years, you've almost certainly encountered a cookie consent banner — that pop-up asking whether you accept cookies on a website. But what exactly are cookies, why do you need permission to use them, and what happens if you don't ask?
What Are Cookies?
Cookies are small text files stored in a user's browser when they visit a website. They serve many purposes:
- Necessary cookies keep you logged in, remember your shopping cart, and make the website function.
- Analytics cookies track which pages visitors view, how long they stay, and where they came from — helping website owners understand their audience.
- Marketing cookies track users across websites to build a profile for targeted advertising.
- Preference cookies remember your settings, like language or display preferences.
Why Do You Need Consent?
Privacy laws — most notably the EU's GDPR and the ePrivacy Directive — require website operators to obtain informed consent before placing non-essential cookies on a visitor's device. The reasoning is straightforward: cookies that track behaviour or build advertising profiles involve processing personal data, and individuals have the right to know about and control that processing.
The key word is non-essential. Cookies strictly necessary for the website to function (like session cookies for a login) are exempt. Everything else — analytics, marketing, social media embeds — requires explicit opt-in consent under GDPR.
What Makes Consent Valid?
Under GDPR, valid consent must be:
- Freely given — users can't be forced to accept cookies to use the website
- Specific — consent for analytics doesn't cover marketing
- Informed — users must know what they're consenting to
- Unambiguous — pre-ticked boxes don't count; it must be an active choice
- Withdrawable — users must be able to change their mind as easily as they consented
What Happens If You Don't Comply?
Non-compliance isn't just a theoretical risk. Data Protection Authorities across Europe have issued fines ranging from a few thousand euros (for small businesses) to hundreds of millions (for large platforms). Beyond fines, there's reputational risk — users are increasingly privacy-conscious and may choose competitors who handle their data responsibly.
How CookieConsent Helps
A good consent management platform does the heavy lifting for you: it presents a compliant banner, records every consent decision with a timestamp and category breakdown, and lets users change their preferences at any time. CookieConsent handles all of this with a single line of JavaScript added to your website's <head>.