How to Make a QR Code for LINE (Japan, Thailand & Taiwan's Dominant Messaging App)
LINE has its own built-in QR code, generated inside the app, that other LINE users scan with LINE's in-app scanner to instantly add you as a friend — this only works if the person scanning already has LINE installed. A standard QR code linking to your LINE profile URL works for anyone, including people without LINE yet, since scanning it with a regular phone camera opens the link and can prompt them to install the app first.
Why LINE matters enough to have its own QR code habit
LINE is the dominant messaging app in Japan, and also widely used in Thailand and Taiwan — in these markets, exchanging a LINE QR code is as common a networking habit as exchanging a phone number is elsewhere. Business cards, storefront window decals, and event materials in these markets routinely include a LINE QR code alongside (or instead of) a phone number, which is why the format shows up so often in businesses targeting these audiences specifically.
Method 1: LINE's own in-app QR code
Inside the LINE app, your personal QR code is found under your profile settings — tap your profile icon, then the QR code icon, which displays a code other LINE users can scan with LINE's built-in scanner (accessed from the same menu) to add you as a friend instantly. This is the fastest method between two people who both already have LINE installed, since it skips any web page or link entirely and adds the friend connection directly inside the app.
The catch: this code is generated and displayed by LINE itself, not by a general-purpose QR generator, and it only works through LINE's own scanner — a regular phone camera app typically won't recognize or act on it the way it does with a standard URL-based QR code.
Method 2: A standard QR code linking to your LINE profile
For situations where you can't guarantee the person scanning already has LINE open (a printed business card, a storefront sign, an event flyer), a standard QR code encoding your LINE profile's share URL works more broadly. LINE profiles and Official Accounts have a shareable web link — generate a regular QR code with that link using QRSen's URL/website content type, and anyone with any phone camera can scan it, whether or not LINE is already installed. If it isn't, the link typically prompts an app-store install before completing the add.
This is the same underlying pattern used for WeChat QR codes and KakaoTalk QR codes — each of these regional messaging apps has its own in-app QR system for existing users, plus a standard URL-based fallback that works for anyone with a camera.
Which method should a business actually use?
| Situation | Better method |
|---|---|
| Two people meeting in person, both already have LINE | LINE's own in-app QR code |
| Printed material (business card, storefront, flyer) reaching a mixed audience | Standard QR code linking to your LINE profile URL |
| Targeting a broad audience where LINE isn't guaranteed to be installed | Standard QR code — it degrades gracefully to an app-install prompt |
| An Official Account for a business (not a personal profile) | Standard QR code linking to the Official Account's share URL, printed wherever customers will see it |
For most business use cases — a storefront decal, a menu insert, an event booth — the standard QR code linking to your LINE profile or Official Account is the safer default, since it works regardless of whether the person scanning already has the app installed.
Quick answers
Can QRSen generate LINE's own in-app friend-add QR code? No — that specific code is generated and displayed only inside the LINE app itself, tied to LINE's own account system. QRSen can generate a standard QR code linking to your LINE profile's share URL, which works with any phone camera.
Does a LINE QR code expire? LINE's in-app personal QR code can be regenerated/reset from within the app if needed. A standard QR code linking to your profile URL, generated with QRSen, is static and doesn't expire on its own — see our guide on static vs. dynamic QR codes for how that works generally.
What happens if someone without LINE scans a LINE profile QR code? With a standard (non-LINE-native) QR code linking to the profile's share URL, they're typically taken to a page prompting them to install LINE before the connection completes — a normal, expected fallback rather than a broken experience.
Is this the same as WeChat's or KakaoTalk's QR code system? Conceptually yes — all three messaging apps use the same two-tier pattern: an in-app QR code for existing users, plus a standard link-based QR code that works for anyone. See our WeChat QR code guide for the equivalent breakdown on that platform.