Cách tạo mã QR cho liên kết trang web: Hướng dẫn trung thực đến tàn nhẫn

Cách tạo mã QR cho liên kết trang web: Hướng dẫn trung thực đến tàn nhẫn

February 14, 2026 77 Views
Cách tạo mã QR cho liên kết trang web: Hướng dẫn trung thực đến tàn nhẫn
How to Generate QR Code for Website Link: The Brutally Honest Guide

Let’s cut the fluff. You’re here because you need a QR code for a website link. Maybe you’re printing flyers, setting up a digital menu, or launching a campaign. But here’s the truth: most people generate QR codes the wrong way—and it’s costing them clicks, credibility, and conversions.

I’ve spent over a decade in digital marketing and UX design, watching QR codes rise from the graveyard of early 2000s gimmicks to their current renaissance. And yes, they’re back—but not in the way you think. This isn’t about slapping a pixelated square on a poster and hoping for magic. It’s about strategy, security, and survival in an attention-starved world.

So if you want to generate a QR code for a website link that actually works—and doesn’t backfire—keep reading. This is the only guide you’ll need.

Why QR Codes Are No Longer a Joke (But Still Risky)

Back in 2010, QR codes were the laughingstock of the marketing world. Clunky, confusing, and often leading to broken links or sketchy landing pages. Fast forward to 2026, and Apple’s native camera QR scanning, Android’s built-in support, and pandemic-driven contactless behavior have resurrected them.

But here’s the brutal truth: just because people can scan QR codes doesn’t mean they will. And even if they do, your code might be doing more harm than good.

Let me break it down:

  • 70% of users expect a QR code to lead to a mobile-optimized page. If it doesn’t? They bounce. Hard.
  • 42% of scanned QR codes in 2026 led to non-HTTPS sites—making them instant red flags for privacy-conscious users.
  • Over 60% of QR code fraud involves phishing via fake codes placed over legitimate ones (e.g., on parking meters or restaurant tables).

So yes, QR codes are useful. But only if you treat them like a high-stakes digital handshake—not a lazy afterthought.

How to Generate a QR Code for a Website Link (The Right Way)

Generating a QR code isn’t hard. Doing it well is. Here’s the step-by-step process I use for clients—and why each step matters.

Step 1: Choose the Right URL

Don’t just paste your homepage. Think like a user. Where do you want them to land? A product page? A signup form? A video?

Use a dedicated landing page with:

  • Mobile-first design (Google prioritizes this)
  • Fast load time (under 2 seconds)
  • Clear call-to-action (e.g., “Download Now” or “Claim Offer”)
  • UTM parameters for tracking (e.g., ?utm_source=qr_flyer&utm_medium=print)

Pro tip: Shorten the URL with a trusted service like Bitly or Rebrandly. Long URLs create dense QR codes that are harder to scan—especially on small prints.

Step 2: Use a Reputable QR Code Generator

Not all generators are created equal. Avoid free tools that:

  • Embed ads in the scan experience
  • Don’t support HTTPS
  • Lack analytics
  • Expire after 30 days

Here’s a quick comparison of top-tier tools:

Tool Dynamic? Analytics Customization Price
QRCode Monkey No Limited High (colors, logos) Free
Bitly Yes Full (clicks, location, device) Medium Free + Paid
QRStuff No None High Free + Paid
Rebrandly Yes Advanced High (branded domains) Paid
Google Charts API (Deprecated) No None None Free (but shut down in 2019)

My recommendation? Use Bitly for most use cases. It’s free, reliable, and gives you real-time analytics. For high-end branding, go with Rebrandly.

Step 3: Generate the QR Code

Once you’ve got your URL and tool, it’s time to generate. But don’t rush.

Here’s what to check:

  • Error Correction Level: Set to “High” (30%). This allows the code to still work even if 30% is damaged or obscured.
  • Size and Resolution: Minimum 2x2 cm for print. For digital, 300x300 pixels is safe.
  • Contrast: Black on white is best. Avoid red, blue, or gradients—they confuse scanners.
  • Quiet Zone: Leave a blank margin (at least 4 modules wide) around the code. No text, logos, or borders touching it.

And please—don’t embed your logo in the center unless you’re using a dynamic QR service that supports it. Static codes with logos often fail to scan.

Step 4: Test, Test, Test

I can’t stress this enough: test your QR code on multiple devices.

Try:

  • iPhone (Camera app)
  • Android (Google Lens or built-in camera)
  • Older smartphones (they struggle with dense codes)
  • Different lighting conditions (low light, glare)
  • At varying distances (10cm to 50cm)

If it doesn’t scan within 3 seconds on a mid-range phone, it’s broken. Go back and simplify.

The Hidden Dangers of QR Codes (And How to Avoid Them)

QR codes are convenient. But they’re also a hacker’s playground. Here’s what you need to know.

Phishing and Malware Risks

Scammers are replacing legitimate QR codes with malicious ones. A user scans what looks like a parking payment code—but it leads to a fake site stealing credit card info.

How to protect your audience:

  • Use HTTPS-only URLs. No exceptions.
  • Avoid linking to app stores or download pages unless absolutely necessary.
  • Educate users: Add a small note like “Scan with your camera app” to reduce fear.

Link Rot and Broken Codes

You print 10,000 flyers with a QR code. Six months later, the page is gone. Now you’ve got 10,000 dead links.

Solution: Use dynamic QR codes. These allow you to update the destination URL without changing the code itself. Bitly and Rebrandly offer this. It’s a lifesaver.

Tracking Without Creeping People Out

Analytics are essential. But don’t overdo it. Avoid collecting personal data unless you have explicit consent (GDPR/CCPA compliance).

Stick to:

  • Scan count
  • Time and date
  • Geographic location (city-level, not GPS)
  • Device type

Anything more? You’re entering shady territory.

Future of QR Codes: What’s Coming in 2026 and Beyond

QR codes aren’t going away. But they’re evolving.

Dynamic and Smart QR Codes

Imagine a QR code that changes based on the time of day, user location, or device. That’s already possible with platforms like Beaconstac and QR Tiger.

Example: A restaurant’s QR code shows the lunch menu at 11 AM and the dinner menu at 6 PM—all from the same code.

Integration with AR and NFC

The next wave? QR codes that trigger augmented reality experiences. Point your phone at a poster, and a 3D model pops up. Or combine QR with NFC tags for dual-trigger engagement.

Blockchain and Verification

Fake QR codes are a real problem. But blockchain-based verification could solve it. Imagine scanning a code and seeing a “verified” badge if it’s authentic.

Companies like VeriQR are already working on this. It’s not mainstream yet—but it will be.

FAQs: Everything You’re Too Afraid to Ask

Q: Can I generate a QR code for free?

A: Yes—but free tools often lack analytics, dynamic updates, and security. For business use, invest in a paid plan. It pays for itself in tracking and reliability.

Q: Do QR codes work on all phones?

A: Almost all smartphones released after 2017 support native QR scanning. iPhones since iOS 11 (2017), Android since 8.0 (2017). Older phones may need a third-party app.

Q: How small can a QR code be?

A: For print, minimum 2x2 cm (0.8x0.8 inches). For screens, 200x200 pixels. Smaller = harder to scan.

Q: Can I track who scanned my QR code?

A: You can track how many and from where, but not who unless they submit info afterward (e.g., via a form). Privacy laws restrict direct identification.

Q: Should I use a custom design?

A: Only if you’re using a dynamic QR service and testing rigorously. Fancy colors, logos, or shapes can break scanning. Simplicity wins.

Q: What’s the difference between static and dynamic QR codes?

A: Static codes are fixed—once generated, the URL can’t be changed. Dynamic codes allow URL updates, analytics, and password protection. Always choose dynamic for business.

Q: Can QR codes expire?

A: Static codes don’t expire, but the linked page might. Dynamic codes can be set to expire or redirect after a certain date—great for limited-time offers.

Q: Are QR codes accessible?

A: Not inherently. Users with visual impairments can’t scan them. Always provide an alternative (e.g., a short URL or text instruction).

Final Thoughts: Don’t Just Generate—Strategize

Generating a QR code for a website link isn’t a technical task. It’s a marketing decision. One that affects user trust, conversion rates, and brand perception.

So stop using free generators with no analytics. Stop linking to broken pages. Stop ignoring mobile optimization.

Instead, treat your QR code like a digital doorway. Make it inviting. Make it secure. Make it trackable. And for God’s sake, test it.

The future of QR codes isn’t just about convenience. It’s about intelligence, adaptability, and trust. Get it right now, and you’ll be ahead of the curve when the next wave hits.

Now go generate something that actually works.


Share this article