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Thank you. Here is what you bought.

A key that opens the Hello Card builder, where you make your card and download it as a file you own. There is no subscription and no account.

Setup guide

The builder gives you two downloads. Pick the one that fits you.

File	Use it when
`card-embed.html`	You already have a website (Squarespace, Webflow, WordPress) and can add a code block. Go to A
`index.html`	You have no website. It is a complete one-page site you upload to a free host. Go to B

A. On my website B. No website Own address Changing it later Tips Quick fixes

A. Add it to a site you already have

Paste card-embed.html into a code block on a blank page. The card fills that page and colours its background, so use a page with nothing else on it.

Squarespace 7.1

Add a new blank page, for example named "Hello", so the address is yoursite.com/hello.
Edit the page, click +, and choose a Code block.
Set the mode to HTML and switch "Display Source Code" off.
Open card-embed.html in a text editor (Notepad, TextEdit), select everything, copy it, paste it into the block and save.
Open the live page on your phone to check it. The editor preview may not run the card.

Code blocks need a Squarespace plan that includes them. Check your plan first.

Webflow: add an Embed element to a blank page, paste the file, then publish. If Webflow says the embed is too long, use option B instead.

WordPress: add a Custom HTML block, paste the file, then publish. If the card stays blank, a plugin may be removing scripts.

B. No website? Upload the file

index.html is a complete one-page site. Your photo is already inside it, so there is only one file.

Put index.html in a new, empty folder. Do not rename the file.
Netlify: create a free account, open Netlify Drop (app.netlify.com/drop) and drag the folder onto the page.
Or Cloudflare Pages: create a free account, go to Workers & Pages, choose Create, then Pages, then Upload assets, and drag in the folder.
Open the address the host gives you (something like yourname.netlify.app) and check it on your phone.

Create the account before you upload. A drop made without an account may be deleted after a short time.

Optional: use your own address

An address like card.yourname.com looks more professional. It is the only part that can cost money: a new domain is roughly 10 to 15 euros a year, paid to the domain provider. If you already own a domain, a subdomain such as card.yourname.com is free.

Card on your website (A): nothing to do. It already lives on your own domain.
Uploaded card (B): follow the three steps below.

In Netlify or Cloudflare Pages, open the site's domain settings, choose Add custom domain, and type card.yourname.com.
At the company where you bought your domain, open the DNS settings and add a CNAME record. Name: card. Value: the address your host shows you.
Wait from 5 minutes to a few hours. The padlock (HTTPS) is added automatically.

The DNS screen looks different at every provider. If you get stuck, search for "add CNAME record" with your provider's name.

Changing your card later

Open the builder with your key.
At the bottom, choose "Load my card file" and pick the file you downloaded before.
Edit, download again, and replace the old one: paste over the code block, or upload the folder again.

Tips

Make it one tap away. Open your card on your phone and add it to your home screen from the browser's share menu.
WhatsApp shows a bare number until someone saves you. Set your WhatsApp profile name and photo, so people see who you are even before saving. Better still, ask them to tap Save contact first.
Write your phone number with + and the country code, for example +44 20 7946 0000. It then works for people from other countries.

Quick fixes

Problem	Fix
The page is blank or shows code	On Squarespace, check that "Display Source Code" is off and look at the live page, not the editor. Make sure you pasted the whole file.
My changes do not show	Save or upload again, then close the tab on your phone and reopen the page.
Save contact does nothing	You are probably inside the Instagram, LinkedIn or another app's built-in browser. Open the page in Safari or Chrome and try again.
On Android a file downloads instead of a contact opening	That is normal on Android. Tap the downloaded file and choose Contacts.
WhatsApp opens the wrong chat	The number must start with the country code, and it must be a number that has WhatsApp.
A Copy button says "Copy failed"	Press and hold the number or email on screen and choose Copy. This is rare.
The builder does not accept my key	Copy the key from the email again without spaces. A key works on a limited number of devices.