Community Session: c15t - the developer first cookie banner

Christopher Burns will be joining the Vercel community to share how c15t is tackling one of the web’s most frustrating performance issues: slow, bloated cookie banners. c15t is a developer-first framework for consent management, built for modern stacks like Next.js, with zero client-side bloat and full compliance. He’ll walk through how c15t rethinks consent from the ground up — prioritizing speed, UX, and developer experience.

To join in the live chat - join the community and click “Going” above :point_up:


Speakers

Christopher Burns
Founder
Twitter/X | LinkedIn

Moderators

Amy Egan (@amyegan) Pauline P. Narvas (@pawlean)
Community at Vercel Community at Vercel
Twitter/X | LinkedIn | Bluesky Twitter/X | LinkedIn | Bluesky
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Really Excited to attend this Session.

3 Likes

See you there, Avik!

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Cannot wait for this session :victory_hand:

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It’s gonna be good :fire:

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The stream was awesome! Great job @pawlean, @amyegan, and @burnedchris :heart:

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Hey Everyone!

// Slides from the talk

// c15t - Dev First cookie banner

// Check the CMP benchmarks

// Official Host for c15t

Thank you to @pawlean and @amyegan for having me on!

4 Likes

The stream was great. I need to see it once more for more better understanding.

Great Job @pawlean , @amyegan and @burnedchris

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jacobparis

I'm here for the cookies

cookie 2
bestcodes

LOL

sejori

Super excited for this. Is there a gluten free option? :D

joy 2
bestcodes

Hi!!!

waving_hand 3
sejori

London UK <3

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jacobparis

Toronto Gang

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bestcodes

USA

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pawlean

I'm presenting from Brighton in the UK today :smiley:

If you have any questions, drop them in the chat here! We'll ask Chris at the end of his demo and presentation!!

I hope this inspires people to come join us in the chat: https://x.com/paulienuh/status/1947712102795514352

Who here has thought about cookie banners as much as Chris?

beach_with_umbrella 1
ferris_wheel 1
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bestcodes

Not me lol

Chris is a pro :fire:

pawlean

:laughing:

I didn't realise how important it is tbh!

bestcodes

Yeah, I just put "we use cookies" and hope it will be good enough :flushed_face:

pawlean

Imagine - pretty cookie banners

bestcodes

:sparkles: :cookie: :sparkles:

Oooh nice personal site theme

pawlean

Yeah lots of character!

I need to add one for my personal site

Haha

Demo gods :folded_hands:

Oh we good!

laughing 1
bestcodes

I have a question, what is the CLI written in? Because it looks very nice :star_struck:

pawlean

:red_question_mark: WILL ASK AT THE END

bestcodes

Are you angry or stuck in caps lock? I hope it was okay to ask right now :sweat_smile:

pawlean

Haha

I just realised I sent in caps

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jacobparis

Can I see anywhere a list of users who have given consent?

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sejori

Did we just witness a Guiness world record for fastest cookie banner setup EVER??

pawlean

Yes tbh

star_struck 2
kayleewilliams

pages support*

sejori

It seems like Chris and the team have thought of it all. I would love to hear more about their development process. How did they decide on core features and roadmap etc?

pawlean

Greattttt question @sejori

I'll ask :D

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bestcodes

The benchmarks look great :D

andywatt-7924

In all the implementations I have seen of c15t, no one has listed the cookies in use and their functions. They only mention the types of cookies on the site, such as strictly necessary, etc. Isn’t this a requirement, though?

pawlean

Another fantastic question! We'll ask :D

kayleewilliams

I love when my cookie banner takes up my entire screen! /j

rofl 4
bestcodes

A quadruple win! That's the most wins I've seen in a product :laughing:

jacobparis

clack

pawlean

spot on

Any other questions? Drop them here!! :D

jacobparis

I can always spot those prompts in a CLI

bestcodes

Okay thanks!

jonoroboto

Yo, how do you handle things like YouTube and other embeds with cookie banner? Is there a way to do it nicely?

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sejori

Another question, where can we go to suggest c15t features? :D

100 4
pawlean

Best question (coming from a community person!)

raising_hands 2
andywatt-7924

Does it integrate well and function smoothly with Google Consent Mode?

100 2
jonoroboto

Too late, get ready for some spam

joy 2
jacobparis

I have too many newsletter subscriptions I'll send some of them your way

pawlean

Hahahha

andywatt-7924

Transparency and honesty in answering questions. Refreshing!

heart 2
pawlean

:100: totally agree

We have time for another question, so feel free to ask!

sejori

Bit of a technical one, how can you reliably track a users location? Is it all HTTP headers? How is this done without any network overhead?

Interesting - that's very clever :clap:

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pawlean
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andywatt-7924

Is there an option in the cookie banner to link to our own terms and conditions and cookie policy?

kayleewilliams

not yet

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sejori

^ Potentially one for the discord Andy!

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jonoroboto

Cheers Chris, awesome talk - it's been our last pain point with building websites, so couldn't be happier

raising_hands 2
bestcodes

Bye! Thanks everyone :heart:

heart 4
pawlean

See you all next week!

Next week's session: Community Session: AI Gateway

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