Does it save the contact automatically?

No. The phone shows the details and offers to save them, and the person chooses. That is deliberate on both iOS and Android.

Why does my company name have backslashes in the preview?

Semicolons and commas separate fields in the vCard format, so they are escaped. The phone strips the escapes and shows the name normally.

How much can I put on one code?

Technically a lot, but each field makes the pattern denser. A card sized code with more than a name, number and email starts to get hard for older phones to read.

vCard QR Code Generator

Scanning offers to save the contact.

First name

Last name

Company

Phone

Website

Download as

pngsvg

Scanning offers to save the contact.

How to use it

Fill in the name. A first or last name is enough. Everything else is optional and only appears if you enter it.
Add the details you want shared. Company, phone, email and website. Leave out anything you would rather not print on a card.
Download it. SVG for anything printed at card size. The full vCard is shown underneath so you can check it before it goes to press.

When you would use this

A vCard QR code carries contact details as a small structured record, so scanning it offers to save the person straight into a phone's address book rather than making them type anything. It is the useful half of a paper business card, and it is worth putting on the back of one. Only the fields you fill in are included, so a card can carry a name and an email and nothing else. Semicolons and commas separate fields in the format itself, which is why a company name containing either is escaped before encoding: skip that step and the card silently splits into the wrong fields. Keep it to what someone actually needs, because every extra line makes the pattern denser and harder to scan at card size.

Questions

Does it save the contact automatically?: No. The phone shows the details and offers to save them, and the person chooses. That is deliberate on both iOS and Android.
Why does my company name have backslashes in the preview?: Semicolons and commas separate fields in the vCard format, so they are escaped. The phone strips the escapes and shows the name normally.
How much can I put on one code?: Technically a lot, but each field makes the pattern denser. A card sized code with more than a name, number and email starts to get hard for older phones to read.