mehr SEO

next.config.mjs

@@ -1,18 +1,18 @@
-import os from 'os';
+import os from 'os';
-import path from 'path';
+import path from 'path';
-
+
-function isWslOnWindowsMount() {
+function isWslOnWindowsMount() {
-  return process.platform === 'linux' && process.cwd().startsWith('/mnt/');
+  return process.platform === 'linux' && process.cwd().startsWith('/mnt/');
-}
+}
-
+
-/** @type {import('next').NextConfig} */
+/** @type {import('next').NextConfig} */
-const nextConfig = {
+const nextConfig = {
-  output: 'standalone',
+  output: 'standalone',
-  skipTrailingSlashRedirect: true,
+  skipTrailingSlashRedirect: true,
-  eslint: {
+  eslint: {
-    ignoreDuringBuilds: true,
+    ignoreDuringBuilds: true,
-  },
+  },
-  images: {
+  images: {
     unoptimized: false,
     remotePatterns: [
       { protocol: 'https', hostname: 'www.qrmaster.net' },
@@ -29,23 +29,23 @@ const nextConfig = {
   // Allow build to succeed even with prerender errors
   // Pages with useSearchParams() will be rendered dynamically at runtime
   staticPageGenerationTimeout: 120,
-  onDemandEntries: {
+  onDemandEntries: {
-    maxInactiveAge: 25 * 1000,
+    maxInactiveAge: 25 * 1000,
-    pagesBufferLength: 2,
+    pagesBufferLength: 2,
-  },
+  },
-  poweredByHeader: false,
+  poweredByHeader: false,
-  webpack: (config, { dev }) => {
+  webpack: (config, { dev }) => {
-    if (!dev && isWslOnWindowsMount()) {
+    if (!dev && isWslOnWindowsMount()) {
-      config.cache = {
+      config.cache = {
-        type: 'filesystem',
+        type: 'filesystem',
-        cacheDirectory: path.join(os.tmpdir(), 'qrmaster-next-webpack-cache'),
+        cacheDirectory: path.join(os.tmpdir(), 'qrmaster-next-webpack-cache'),
-      };
+      };
-    }
+    }
-
+
-    return config;
+    return config;
-  },
+  },
-  async redirects() {
+  async redirects() {
-    return [
+    return [
       {
         source: '/create-qr',
         destination: '/dynamic-qr-code-generator',
@@ -71,14 +71,9 @@ const nextConfig = {
         destination: '/tools/call-qr-code-generator',
         permanent: true,
       },
-      {
-        source: '/barcode-generator',
-        destination: '/tools/barcode-generator',
-        permanent: true,
-      },
       {
         source: '/bar-code-generator',
-        destination: '/tools/barcode-generator',
+        destination: '/barcode-generator',
         permanent: true,
       },
       {

quora_antwort_statisch_dynamisch.txt

@@ -0,0 +1,45 @@
+Frage: Was ist der Unterschied zwischen statischen und dynamischen QR-Codes, und welche eignen sich am besten für welche Zwecke?
+
+---
+
+Kurz gesagt: Der Unterschied liegt darin, was im QR-Code steckt.
+
+Ein statischer QR-Code kodiert die Ziel-URL direkt ins Muster. Einmal gedruckt, ist alles fest — du kannst nichts mehr ändern. Ändert sich deine URL, ist der Code wertlos.
+
+Ein dynamischer QR-Code kodiert nur eine kurze Weiterleitungs-URL (z.B. qrmaster.net/r/xyz). Wo die hinführt, steuerst du jederzeit über ein Dashboard — ohne den gedruckten Code anzufassen.
+
+---
+
+Wann statisch reicht:
+
+- WLAN-Passwort, das sich nie ändert
+- Einmalige Events (z.B. Einlass-Scan)
+- Visitenkarte mit fixer vCard
+- Alles, wo du sicher bist, dass sich die URL nie ändert
+
+Wann dynamisch die bessere Wahl ist:
+
+- Restaurantmenüs, Flyer, Plakate — alles was länger gedruckt bleibt
+- Marketingkampagnen mit wechselnden Landingpages
+- Wenn du wissen willst, wer, wann und womit gescannt hat
+- Wenn du nach dem Druck noch einen Tippfehler in der URL korrigieren willst
+
+---
+
+Was viele unterschätzen — die Druckkosten:
+
+Statische Codes wirken erstmal kostenlos. Aber sobald sich die URL ändert, musst du alles neu drucken.
+
+Beispiel: 500 Flyer à 0,18 € = 90 € pro Neudruck. Wer das zweimal im Jahr macht, hat den Preis eines Jahresabos für dynamische Codes längst überschritten.
+
+---
+
+Was dynamische Codes zusätzlich bieten:
+
+- Scan-Statistiken: Gerät, Land, Uhrzeit
+- UTM-Parameter für Google Analytics
+- Zentrale Verwaltung aller Codes im Dashboard
+
+Für eigene Kampagnen nutze ich den dynamischen QR-Code-Generator von QR Master (https://www.qrmaster.net/dynamic-qr-code-generator) — Ziele lassen sich nach dem Druck in Sekunden ändern, und man sieht genau welcher Code wie performt.
+
+Fazit: Für einmaligen Privatgebrauch reicht statisch völlig. Sobald QR-Codes gedruckt werden und länger im Einsatz sind, ist dynamisch fast immer die günstigere Wahl.

src/app/(main)/(app)/bulk-creation/page.tsx

@@ -285,6 +285,7 @@ export default function BulkCreationPage() {
   };
 
   const saveQRCodesToDatabase = async () => {
+    if (isDynamic) return; // dynamic codes are already saved during generation
     setLoading(true);
 
     try {
@@ -817,12 +818,14 @@ export default function BulkCreationPage() {
                 </svg>
                 Download All as ZIP
               </Button>
-              <Button onClick={saveQRCodesToDatabase} loading={loading}>
+              {!isDynamic && (
-                <svg className="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <Button onClick={saveQRCodesToDatabase} loading={loading}>
-                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 7H5a2 2 0 00-2 2v9a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-3m-1 4l-3 3m0 0l-3-3m3 3V4" />
+                  <svg className="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                </svg>
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 7H5a2 2 0 00-2 2v9a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-3m-1 4l-3 3m0 0l-3-3m3 3V4" />
-                Save QR Codes
+                  </svg>
-              </Button>
+                  Save QR Codes
+                </Button>
+              )}
             </div>
           </CardContent>
         </Card>

src/app/(main)/(marketing)/dynamic-qr-code-generator/page.tsx

@@ -262,6 +262,16 @@ const softwareSchema = {
   },
   description:
     'Create dynamic QR codes that can be updated after printing. Change destinations later and review scan context from one dashboard.',
+  speakable: {
+    '@type': 'SpeakableSpecification',
+    cssSelector: ['h1', '.answer-first-block', '.bg-green-50'],
+  },
+  author: {
+    '@type': 'Person',
+    name: 'Timo Knuth',
+    url: 'https://www.qrmaster.net/authors/timo',
+  },
+  dateModified: '2026-04-27',
   featureList: [
     'Edit QR code destinations after printing',
     'Review scan analytics in the dashboard',

src/app/(main)/(marketing)/tools/barcode-generator/page.tsx

@@ -52,6 +52,22 @@ const jsonLd = {
             '/barcode-generator-preview.png',
             'UtilitiesApplication'
         ),
+        {
+            '@type': 'WebPage',
+            '@id': 'https://www.qrmaster.net/tools/barcode-generator',
+            name: 'Free Barcode Generator Online – EAN, UPC, Code 128',
+            description: 'A barcode generator converts any number or text into a scannable barcode image for retail labels, inventory, and product packaging. Supports EAN-13, UPC-A, and Code 128.',
+            speakable: {
+                '@type': 'SpeakableSpecification',
+                cssSelector: ['.bg-blue-50', 'h1'],
+            },
+            author: {
+                '@type': 'Person',
+                name: 'Timo Knuth',
+                url: 'https://www.qrmaster.net/authors/timo',
+            },
+            dateModified: '2026-04-27',
+        },
         {
             '@type': 'HowTo',
             name: 'How to Create a Barcode',
@@ -239,6 +255,58 @@ export default function BarcodeGeneratorPage() {
                     <BarcodeGeneratorClient />
                 </section>
 
+                {/* AI-EXTRACTABLE DEFINITION + STATS BLOCK */}
+                <section className="py-12 px-4 sm:px-6 lg:px-8 bg-white border-b border-slate-100">
+                    <div className="max-w-4xl mx-auto">
+                        <div className="bg-blue-50 border-l-4 border-blue-500 rounded-xl p-6 mb-8">
+                            <h2 className="text-xl font-bold text-slate-900 mb-2">What is a Barcode Generator?</h2>
+                            <p className="text-slate-700 leading-relaxed">
+                                A <strong>barcode generator</strong> is an online tool that converts a number or text string into a scannable barcode image (EAN-13, UPC-A, or Code 128). The generated barcode can be downloaded as PNG or SVG and printed on product labels, packaging, or inventory stickers for use with any standard barcode scanner.
+                            </p>
+                        </div>
+                        <div className="grid md:grid-cols-3 gap-6 mb-8">
+                            <div className="text-center p-5 rounded-xl bg-slate-50 border border-slate-200">
+                                <div className="text-3xl font-extrabold text-blue-600 mb-1">EAN-13</div>
+                                <div className="text-sm font-semibold text-slate-700 mb-1">Global Retail Standard</div>
+                                <div className="text-xs text-slate-500">Used on over 5 billion product labels worldwide (GS1, 2024)</div>
+                            </div>
+                            <div className="text-center p-5 rounded-xl bg-slate-50 border border-slate-200">
+                                <div className="text-3xl font-extrabold text-blue-600 mb-1">UPC-A</div>
+                                <div className="text-sm font-semibold text-slate-700 mb-1">North America Standard</div>
+                                <div className="text-xs text-slate-500">Required by Amazon, Walmart, Target for product listings</div>
+                            </div>
+                            <div className="text-center p-5 rounded-xl bg-slate-50 border border-slate-200">
+                                <div className="text-3xl font-extrabold text-blue-600 mb-1">Code 128</div>
+                                <div className="text-sm font-semibold text-slate-700 mb-1">Inventory &amp; Logistics</div>
+                                <div className="text-xs text-slate-500">Supports letters + numbers — best for internal SKU systems</div>
+                            </div>
+                        </div>
+                        <div className="bg-amber-50 border border-amber-200 rounded-xl p-5">
+                            <h3 className="font-bold text-slate-900 mb-2">Barcode vs. QR Code — When to Use Which</h3>
+                            <div className="grid md:grid-cols-2 gap-4 text-sm text-slate-700">
+                                <div>
+                                    <p className="font-semibold text-slate-800 mb-1">✓ Use a barcode for:</p>
+                                    <ul className="space-y-1 list-disc list-inside text-slate-600">
+                                        <li>Product SKUs and retail checkout</li>
+                                        <li>Warehouse shelf and bin labels</li>
+                                        <li>Inventory counting and stock control</li>
+                                        <li>Order fulfillment and packing verification</li>
+                                    </ul>
+                                </div>
+                                <div>
+                                    <p className="font-semibold text-slate-800 mb-1">✓ Use a QR code for:</p>
+                                    <ul className="space-y-1 list-disc list-inside text-slate-600">
+                                        <li>Restaurant menus and digital content</li>
+                                        <li>Marketing campaigns and landing pages</li>
+                                        <li>Review collection and customer feedback</li>
+                                        <li>Product setup guides and support pages</li>
+                                    </ul>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </section>
+
                 {/* HOW IT WORKS */}
                 <section className="py-16 px-4 sm:px-6 lg:px-8 bg-white">
                     <div className="max-w-4xl mx-auto">

src/app/sitemap.ts

@@ -50,10 +50,17 @@ export default function sitemap(): MetadataRoute.Sitemap {
     'barcode-generator': 0.95,
   };
 
+  const toolLastModified: Record<string, Date> = {
+    'barcode-generator': new Date('2026-04-27'),
+    'vcard-qr-code': new Date('2026-04-27'),
+    'instagram-qr-code': new Date('2026-04-27'),
+    'wifi-qr-code': new Date('2026-04-27'),
+  };
+
   const toolPages = freeTools.map((slug) => ({
     url: `${baseUrl}/tools/${slug}`,
-    lastModified: new Date(),
+    lastModified: toolLastModified[slug] ?? new Date('2026-01-01'),
-    changeFrequency: 'monthly' as const,
+    changeFrequency: slug === 'barcode-generator' ? 'weekly' as const : 'monthly' as const,
     priority: highPriorityTools[slug] ?? 0.8,
   }));
 
@@ -202,9 +209,9 @@ export default function sitemap(): MetadataRoute.Sitemap {
     },
     {
       url: `${baseUrl}/dynamic-qr-code-generator`,
-      lastModified: new Date(),
+      lastModified: new Date('2026-04-27'),
-      changeFrequency: 'monthly',
+      changeFrequency: 'weekly',
-      priority: 0.9,
+      priority: 0.95,
     },
     {
       url: `${baseUrl}/dynamic-barcode-generator`,

src/components/ui/Footer.tsx

@@ -63,6 +63,8 @@ export function Footer({ variant = 'marketing', t }: FooterProps) {
               <li><Link href="/#pricing" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>{translations.full_pricing}</Link></li>
               <li><Link href="/faq" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>{translations.all_questions}</Link></li>
               <li><Link href="/blog" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>{translations.all_articles}</Link></li>
+              <li><Link href="/tools/barcode-generator" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Barcode Generator</Link></li>
+              <li><Link href="/dynamic-qr-code-generator" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Dynamic QR Code Generator</Link></li>
               <li><Link href="/bulk-qr-code-generator" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Bulk QR Generator</Link></li>
               <li><Link href="/dynamic-barcode-generator" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Dynamic Barcode Generator</Link></li>
               
@@ -120,6 +122,7 @@ export function Footer({ variant = 'marketing', t }: FooterProps) {
               <li><Link href="/privacy" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>{translations.privacy_policy}</Link></li>
               <li><Link href="/contact" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Contact</Link></li>
               <li><Link href="/qr-code-erstellen" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>QR Code Erstellen (DE)</Link></li>
+              <li><Link href="/barcode-generator" className={isDashboard ? 'hover:text-primary-600' : 'hover:text-white'}>Barcode Generator (DE)</Link></li>
             </ul>
           </div>
 

src/lib/blog-data.ts

@@ -68,7 +68,7 @@ export const blogPosts: BlogPost[] = [
         answer: "Only if your subscription expires. As long as your account is active, dynamic QR codes redirect indefinitely. QR Master offers a free tier with basic dynamic codes so you can test before committing.",
       },
     ],
-    relatedSlugs: ["trackable-qr-codes", "microsoft-teams-qr-code"],
+    relatedSlugs: ["trackable-qr-codes", "microsoft-teams-qr-code", "barcode-generator-tool"],
     sources: [
       { name: "ISO/IEC 18004:2015 — QR Code bar code symbology specification", url: "https://www.iso.org/standard/62021.html", accessDate: "April 2026" },
       { name: "Denso Wave — QR Code inventor, official QR code information", url: "https://www.qrcode.com/en/about/", accessDate: "April 2026" },
@@ -584,7 +584,7 @@ export const blogPosts: BlogPost[] = [
       { question: "Can I track QR codes for free?", answer: "Basic tracking may be free in some tools, but advanced analytics usually requires dynamic QR features." },
       { question: "What's the best QR code use case for ROI?", answer: "Lead capture, reviews/feedback, menu ordering, and promotions work best when tracked and optimized." },
     ],
-    relatedSlugs: ["qr-code-marketing", "qr-code-analytics", "free-vs-paid-qr-generator", "best-qr-code-generator-2026"],
+    relatedSlugs: ["qr-code-marketing", "qr-code-analytics", "free-vs-paid-qr-generator", "best-qr-code-generator-2026", "barcode-generator-tool"],
     authorName: "Timo Knuth",
     authorTitle: "QR Code & Marketing Expert",
     content: `<div class="blog-content">
@@ -735,7 +735,7 @@ export const blogPosts: BlogPost[] = [
       { question: "Do dynamic QR codes expire?", answer: "They can if the service is disabled. Keep the plan/account active for long-term campaigns." },
       { question: "Why do dynamic QR codes enable tracking?", answer: "Because scans go through a redirect that logs scan events before sending users to the final destination." },
     ],
-    relatedSlugs: ["qr-code-tracking-guide-2025", "trackable-qr-codes", "free-vs-paid-qr-generator", "best-qr-code-generator-2026"],
+    relatedSlugs: ["qr-code-tracking-guide-2025", "trackable-qr-codes", "free-vs-paid-qr-generator", "best-qr-code-generator-2026", "barcode-generator-tool"],
     authorName: "Timo Knuth",
     authorTitle: "QR Code & Marketing Expert",
     sources: [
@@ -788,7 +788,7 @@ export const blogPosts: BlogPost[] = [
       { question: "How many QR codes can I generate at once?", answer: "Depends on the tool/plan. For large batches, use bulk features with limits (e.g., 1,000 rows)." },
       { question: "How do I add UTM tracking for each QR?", answer: "Add UTM columns or append UTMs in your URL column before upload." },
     ],
-    relatedSlugs: ["qr-code-api-documentation", "qr-code-tracking-guide-2025", "dynamic-vs-static-qr-codes", "qr-code-print-size-guide"],
+    relatedSlugs: ["qr-code-api-documentation", "qr-code-tracking-guide-2025", "dynamic-vs-static-qr-codes", "qr-code-print-size-guide", "barcode-generator-tool"],
     authorName: "Timo Knuth",
     authorTitle: "QR Code & Marketing Expert",
     sources: [
@@ -907,17 +907,66 @@ export const blogPosts: BlogPost[] = [
       { question: "Is this barcode generator free for commercial use?", answer: "Yes—our tool lets you generate and download high-resolution barcode images for commercial packaging and labels." },
       { question: "How do I print barcode labels correctly?", answer: "Use a high-resolution printer (300 DPI+) and ensure high contrast, typically black bars on a solid white background, to ensure reliable scanning." },
     ],
-    relatedSlugs: ["dynamic-vs-static-qr-codes", "qr-code-print-size-guide"],
+    relatedSlugs: ["dynamic-vs-static-qr-codes", "qr-code-print-size-guide", "qr-code-small-business", "bulk-qr-code-generator-excel"],
     authorName: "Timo Knuth",
     authorTitle: "QR Code & Marketing Expert",
     content: `<div class="blog-content">
       <div class="post-metadata bg-blue-50 p-4 rounded-lg mb-8 border-l-4 border-blue-500">
         <p class="text-sm text-gray-700">
-          <strong>Author:</strong> Timo Knuth, QR Code & Marketing Expert<br/>
+          <strong>Author:</strong> Timo Knuth, QR Code &amp; Marketing Expert<br/>
           📅 <strong>Published:</strong> January 29, 2026 | <strong>Last updated:</strong> January 26, 2026
         </p>
       </div>
-      <h2>Free Barcode Generator</h2><p>Content coming soon.</p></div>`
+
+      <h2>What Is a Barcode Generator?</h2>
+      <p>A barcode generator is a tool that turns a number or text string into a scannable barcode image. You enter a value — a SKU, product ID, or inventory code — and the tool outputs a barcode you can download and print on labels, packaging, or shelf tags.</p>
+      <p>QR Master includes a free <a href="/tools/barcode-generator">barcode generator</a> that supports the most common formats used in retail and inventory management: EAN-13, UPC-A, and Code 128. No account required, no watermarks.</p>
+
+      <h2>Supported Barcode Formats</h2>
+      <ul>
+        <li><strong>EAN-13</strong> — The global standard for retail products. Used on nearly every consumer product sold outside North America. Requires a 13-digit number.</li>
+        <li><strong>UPC-A</strong> — The North American retail standard. 12 digits. Used by Amazon, Walmart, Target, and most US/Canada retail systems.</li>
+        <li><strong>Code 128</strong> — The most flexible format. Supports letters and numbers. Ideal for internal inventory codes, warehouse labels, and shipping references.</li>
+      </ul>
+
+      <h2>How to Create a Barcode</h2>
+      <ol>
+        <li>Open the <a href="/tools/barcode-generator">QR Master barcode generator</a>.</li>
+        <li>Select the barcode type (EAN-13 for retail, Code 128 for inventory).</li>
+        <li>Enter your code number or alphanumeric string.</li>
+        <li>Download as PNG (for digital use) or SVG (for print, scales without blurring).</li>
+        <li>Test the printed barcode with a scanner or smartphone app before mass printing.</li>
+      </ol>
+
+      <h2>Barcode vs. QR Code: When to Use Which</h2>
+      <p>Barcodes and QR codes solve different problems. Use a barcode when the code identifies a physical item in an internal or retail system. Use a QR code when you want a customer or employee to scan and open a URL, form, or digital resource.</p>
+      <ul>
+        <li><strong>Barcode:</strong> product SKU, warehouse shelf, retail checkout, inventory count</li>
+        <li><strong>QR code:</strong> restaurant menu, review page, product setup guide, marketing campaign</li>
+      </ul>
+      <p>If the QR code destination might change after printing, use a <a href="/dynamic-qr-code-generator">dynamic QR code</a> — the printed code stays the same, but you can update the link at any time.</p>
+
+      <h2>Printing Tips for Reliable Scanning</h2>
+      <ul>
+        <li>Use black bars on a white background — avoid colored barcodes unless tested</li>
+        <li>Print at 300 DPI or higher for physical labels</li>
+        <li>Leave a quiet zone (blank margin) around the barcode of at least 10 bar widths</li>
+        <li>Minimum recommended width: 25mm for EAN-13, 20mm for Code 128</li>
+        <li>Always scan a printed test copy before ordering bulk labels</li>
+      </ul>
+
+      <h2>Use Cases</h2>
+      <p>The most common uses for an online barcode generator include:</p>
+      <ul>
+        <li><strong>Product labels</strong> — give every SKU a scannable identity before retail listing</li>
+        <li><strong>Inventory management</strong> — label storage bins, shelves, and stock items</li>
+        <li><strong>eCommerce fulfillment</strong> — reduce packing errors by scanning products during order picking</li>
+        <li><strong>Event tickets</strong> — generate unique codes per ticket for check-in scanning</li>
+        <li><strong>Internal asset tracking</strong> — label equipment, tools, and office assets</li>
+      </ul>
+
+      <p>Ready to create your first barcode? Use the free <a href="/tools/barcode-generator">QR Master barcode generator</a> — no signup, instant download.</p>
+    </div>`
   },
 
   {

urls.txt

@@ -0,0 +1,135 @@
+https://www.qrmaster.net
+https://www.qrmaster.net/newsletter
+https://www.qrmaster.net/qr-code-erstellen
+https://www.qrmaster.net/qr-code-tracking
+https://www.qrmaster.net/qr-code-analytics
+https://www.qrmaster.net/reprint-calculator
+https://www.qrmaster.net/dynamic-qr-code-generator
+https://www.qrmaster.net/dynamic-barcode-generator
+https://www.qrmaster.net/bulk-qr-code-generator
+https://www.qrmaster.net/custom-qr-code-generator
+https://www.qrmaster.net/pricing
+https://www.qrmaster.net/tools
+https://www.qrmaster.net/features
+https://www.qrmaster.net/faq
+https://www.qrmaster.net/blog
+https://www.qrmaster.net/privacy
+https://www.qrmaster.net/contact
+https://www.qrmaster.net/about
+https://www.qrmaster.net/press
+https://www.qrmaster.net/testimonials
+https://www.qrmaster.net/tools/url-qr-code
+https://www.qrmaster.net/tools/vcard-qr-code
+https://www.qrmaster.net/tools/text-qr-code
+https://www.qrmaster.net/tools/email-qr-code
+https://www.qrmaster.net/tools/sms-qr-code
+https://www.qrmaster.net/tools/wifi-qr-code
+https://www.qrmaster.net/tools/crypto-qr-code
+https://www.qrmaster.net/tools/event-qr-code
+https://www.qrmaster.net/tools/facebook-qr-code
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