A QR (Quick Response) code is a two-dimensional barcode that stores data in a pattern of black and white squares. It can be scanned by any smartphone camera to instantly access URLs, contact information, WiFi credentials, and more.

How do I create a QR code for my Instagram profile?

Select the Social tab, choose Instagram from the dropdown, type your username, and the QR code is generated instantly. Anyone who scans it will be taken directly to your Instagram profile.

How do I create a WiFi QR code?

Select the WiFi tab, enter your network name (SSID), password, and encryption type (usually WPA). The generated QR code will allow anyone who scans it to connect to your WiFi instantly without typing the password.

No. QR codes generated with ABCQR are static — the data is encoded directly into the image. They never expire and will work forever as long as the encoded content (like a URL) remains valid.

FAQ & Help

Everything you need to know about QR codes and how to use ABCQR.

General QR code questions

A QR (Quick Response) code is a two-dimensional barcode invented in 1994 by DENSO WAVE. It stores data in a pattern of black and white squares that can be read by any smartphone camera. QR codes can encode URLs, text, contact info, WiFi credentials, and much more.

No. QR codes generated with ABCQR are static — the data is encoded directly into the image pattern. They never expire and will work forever. However, if you encode a URL, the QR code will stop being useful if that URL goes offline.

Error correction adds redundant data so the QR code remains scannable even if partially damaged. There are 4 levels:

L (Low) — recovers 7% damage
M (Medium) — recovers 15% damage (recommended)
Q (Quartile) — recovers 25% damage
H (High) — recovers 30% damage

Higher levels make the QR code denser (more modules), so use H only when the code might be partially covered or printed on rough surfaces.

PNG — Raster image, ideal for screens: websites, social media, email, messaging apps. Fixed resolution.

SVG — Vector image, ideal for print: business cards, flyers, banners, posters. Scales to any size with zero quality loss.

Yes. Click "Customize" below the QR preview to change the foreground (code) color and background color. Ensure high contrast between both — dark code on light background works best. Avoid light-on-light or dark-on-dark combinations as scanners may fail to read them.

Yes. ABCQR runs 100% in your browser. Nothing is sent to any server. Your data never leaves your device. We don't use cookies, analytics, or any form of tracking.

Guide for each QR type

Link (URL)

Enter any web address. The QR code will open that URL in the scanner's browser. Always include https:// for best compatibility. This is the most common type of QR code — used in marketing, packaging, menus, and print media.

Text

Encode any plain text message. When scanned, the text is displayed on screen. Useful for short messages, serial numbers, instructions, or any data that doesn't need to be a link.

Email

Enter an email address and optionally a subject and body. The QR code creates a mailto: link that opens the scanner's email app with the fields pre-filled. Great for customer support, feedback forms, or business cards.

Phone

Enter a phone number with country code (e.g. +1 555 123 4567). Scanning opens the dialer with the number ready to call. Used on business cards, storefronts, and flyers.

Event (Calendar)

Create a calendar event with title, start/end date-time, location, and description. The QR code generates a VCALENDAR entry that adds the event to the scanner's calendar app (Google Calendar, Apple Calendar, Outlook). Perfect for conferences, meetups, and invitations.

WiFi

Enter your network name (SSID), password, and encryption type (usually WPA). The QR code lets anyone scan to instantly connect to your WiFi without typing the password. Ideal for homes, offices, cafes, hotels, and Airbnbs. Check "Hidden network" if your SSID is not broadcast.

vCard (Contact)

Create a digital contact card with name, phone, email, organization, and website. Scanning saves the contact directly to the phone's address book. The standard format for professional networking, business cards, and event badges.

Location (Map)

Enter a place name with latitude and longitude coordinates. The QR code creates a geo: link that opens the location in the scanner's maps app (Google Maps, Apple Maps). Use it for store locations, event venues, meeting points, or tourist attractions. You can get coordinates from Google Maps by right-clicking on a location.

Select a social network (Instagram, TikTok, X/Twitter, LinkedIn, YouTube, Facebook, GitHub, or Threads) and enter your username. The QR code links directly to your profile. Widely used on business cards, name tags, storefronts, and printed materials to grow your social following.

Enter a phone number with country code and an optional pre-filled message. The QR code opens a WhatsApp chat with that number. Popular for customer support, small businesses, and personal contact sharing — especially in markets where WhatsApp is the dominant messaging platform.