Cookies
Cookie policy.
A plain list of what 0arch.io actually stores in your browser, what each thing does, and how to turn off what's optional.
Last updated · September 6, 2026
What a cookie is
A cookie is a small piece of text a website stores in your browser so it can remember something between visits, like a login or a choice you made. Some of what's listed below isn't technically a cookie: it's local storage or session storage, which works the same way but stays only on your device instead of being sent back to a server with every request. We use both, so this page covers everything under "cookies" for simplicity.
What we store, and why
This is everything 0arch.io itself sets or reads in your browser. "Necessary" items are required for the site, the chat, or checkout to work, and can't be turned off from here. "Analytics" is optional; see "Your choices" below.
| Name | What it's for | Type | Set by | Lifetime |
|---|---|---|---|---|
| 0arch-theme | Remembers whether you're using light or dark mode | Preference | 0ARCH (browser storage) | Until you clear your browser data |
| 0arch-analytics-consent | Remembers your Accept/Decline choice for analytics | Necessary | 0ARCH (browser storage) | Until you clear your browser data |
| 0arch-region | Tells your browser whether analytics needs your opt-in first, based on your country | Necessary | 0ARCH (cookie, set by our server) | 1 day |
| 0arch_chat_session | Groups your chat messages into one conversation | Necessary | 0ARCH (HTTP-only cookie) | 30 days |
| 0arch_chat_verified | Remembers you passed the bot check so chat doesn't ask again right away | Necessary | 0ARCH (HTTP-only cookie, chat pages only) | 30 minutes |
| 0arch-chat-v1 | Keeps your open chat conversation on screen while you're on the site | Necessary | 0ARCH (browser storage) | Until you close the browser tab |
| 0arch-utm | Remembers which link or ad brought you here during this visit | Necessary | 0ARCH (browser storage) | Until you close the browser tab |
| 0arch_admin_session | Keeps a staff member logged into the admin panel; never set for regular visitors | Necessary | 0ARCH (HTTP-only cookie) | 7 days |
| __stripe_mid, __stripe_sid | Detect fraud while you pay on the order page | Necessary | Stripe (js.stripe.com) | __stripe_mid about 1 year, __stripe_sid about 30 minutes |
| cf_clearance and challenge cookies | Checks that a form is being submitted by a person, not a bot | Necessary | Cloudflare Turnstile (challenges.cloudflare.com) | Short-lived, cleared once the check completes |
| _ga, _ga_* | Counts visits and measures which pages get used | Analytics | Google Analytics | Up to 14 months |
Your choices
Analytics is the only category here you can turn on or off. Use "Privacy choices" in the footer of any page to accept or decline it at any time; the site works exactly the same either way. If you're visiting from the EU, EEA, UK, or Switzerland, analytics stays off until you accept it. We also honor the Global Privacy Control browser signal as an opt-out. Beyond our settings, your browser lets you block or delete cookies and site storage entirely from its own settings or privacy menu, though blocking necessary cookies can break chat and checkout.
Third parties
The Stripe and Cloudflare Turnstile items above are set directly by those companies' scripts on our pages, not by us, so they follow Stripe's and Cloudflare's own cookie practices. Google Analytics, when active, is likewise governed by Google's own policies. We don't control what those companies do with information collected this way, beyond what's described in our privacy policy.
More detail
For what we do with the information behind these cookies, including inquiries, chat transcripts, and payment records, see our privacy policy.
Questions
Email support@0arch.io.