21 Prismic preview cookies

[victorthevictoriousv (victor pettersson)]

I tested my site in pagespeed.web.dev and saw that prismic sets cookies. I read the thread

Disable io.prismic.preview cookie for visitors

I've noticed that including the PrismicPreview component wrapper in NextJs causes the io.prismic.preview cookie to be written for every visitor rather than just the ones that would be previewing data. The cookie is empty but I'm getting around 20 of them set as around 7 get set for each domain as it goes up the sub domain tree for the sites domain and the prismic repos domain. A request to .prismic.io/prismic-toolbar/4.0.9/iframe.html also appears to be being triggered despite not being in pre…

But it seems strange that the pagespeed tool is able to find those cookies aswell`?
Is there a way to remove those?

Regards
/Victor

[nf_mastroianni (Neil)]

Hello @victorthevictoriousv !

Would you be willing to try something to see if this issue persists?

In your browser, use a guest window (it will be cookie free). Run a lighthouse test in the guest window. Can you then confirm if the preview cookies get set there and in such large quanitity?

-Neil

[victorthevictoriousv (victor pettersson)]

Yeah it did and also get an error,

 "devDependencies": {
    "@hypernym/nuxt-gsap": "2.4.2",
    "@nuxt/image": "^1.0.0-rc.3",
    "@nuxtjs/apollo": "^5.0.0-alpha.7",
    "@nuxtjs/netlify-files": "1.2.0",
    "@nuxtjs/prismic": "3.0.3",
    "@nuxtjs/tailwindcss": "6.8.0",
    "@slicemachine/adapter-nuxt": "^0.3.25",
    "@studio-freight/lenis": "1.0.27",
    "nuxt": "^3.7.4",
    "nuxt-simple-sitemap": "^2.6.1",
    "slice-machine-ui": "^1.20.0",
    "vite-svg-loader": "^4.0.0"
  },
  "dependencies": {
    "consola": "^3.0.1",
    "gsap": "^3.12.2",
    "headroom.js": "^0.12.0",
    "nuxt-font-loader": "^2.3.1"
  },

[nf_mastroianni (Neil)]

This might be a very silly question, but I’ll ask anyway.

Are you running the lighthouse test when you’re in dev or are you making a production build and then testing?

[victorthevictoriousv (victor pettersson)]

No its production and i tried like incognito and everything so they should not be there.

[victorthevictoriousv (victor pettersson)]

And i think when i try on pagespeed.dev.web it dont use my browser

[nf_mastroianni (Neil)]

You are correct I missed that part of your initial post where you were using page speed. I will give this a shot as well with my sites to see if I get the same same result, using the page speed tester

[victorthevictoriousv (victor pettersson)]

Nice let me know how it goes :D

[nf_mastroianni (Neil)]

Likewise :

And if I test locally from a browser lighthouse I don't get the same score or cookie count, but I do get:

[victorthevictoriousv (victor pettersson)]

Would be nice to find a solution to this do you know how to get in contact with someone who can look into the matter futher ?

[Phil (Phil Snow)]

Hi Victor,

Can you give me your website URL so I can test this on my side?

[victorthevictoriousv (victor pettersson)]

You can try with this one https://jazzenoland.se/

[Phil (Phil Snow)]

I can see what you're talking about. I'll keep investigating and get back to you.

[victorthevictoriousv (victor pettersson)]

Thank you! @Phil

[Phil (Phil Snow)]

So it looks like maybe a bug in the toolbar which builds the preview sessions. I've reported it to the team as a bug which you can track here:

Toolbar loads 21 previewSession cookies for some projects

For the moment if you don't want these cookies you'll have to disable previews in your project.

[chantal (Chantal van Nuland)]

Is there already a solution to this? I have the same problem

[Phil (Phil Snow)]

Hi Chantal,

Welcome to the community

Can you ask this question directly in the Github link to get the devs eyes on it?

Thanks.