二维码生成器与扫描器 - Logo、离线、免费

免费二维码生成与扫描：Logo 嵌入、自定义配色、URL 参数编辑、历史记录。本地处理，无广告，无需注册。

🎯 The smartest free QR code generator for Chrome — works 100% offline, zero ads, no account needed. Loved by developers, marketers, and power users who need more than a basic QR tool. ━━━━━━━━━━━━━━━━━━━━━━━━ ✨ WHAT MAKES THIS DIFFERENT ━━━━━━━━━━━━━━━━━━━━━━━━ Most QR generators just convert a URL. This one goes further: 🎨 CUSTOM QR CODES WITH LOGO • Upload your own logo to the center of QR codes • Choose foreground & background colors — 6 built-in themes • 4 error correction levels (L / M / Q / H) • Export as PNG or JPG in 4 sizes: 256 / 512 / 1024 / 2048 px 🔍 BUILT-IN QR SCANNER & DECODER • Decode any QR code image — PNG, JPG, GIF, WebP, SVG • Paste a screenshot with Ctrl+V — instant decode, no file saving • Drag & drop image directly into the scanner • Auto-detect URL, Wi-Fi, contact card, or plain text 🛠️ VISUAL URL PARAMETER EDITOR (unique feature) • Edit UTM tags, query strings, API parameters — no manual typing • Add, modify, or delete parameters visually • Auto URL-encodes special characters • Real-time QR preview as you type • Perfect for marketers building campaign links and devs debugging APIs 📋 7 QR CODE CONTENT TYPES • URL & website links • Wi-Fi networks (SSID + password auto-formatted) • Email (pre-filled to / subject / body) • Phone number • SMS messages • vCard contact cards • Plain text 📚 HISTORY & SMART WORKFLOW • Auto-saves every QR you generate — up to 30 items • Browse history grouped by date (Today / Yesterday / older) • Restore any previous QR code and its style with one click • Right-click any selected text or link → "Generate QR Code" • Keyboard shortcut: Ctrl+Shift+Q (Mac: ⌘⇧Q) ━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 PRIVACY FIRST ━━━━━━━━━━━━━━━━━━━━━━━━ • 100% offline — zero data sent to any server, ever • No account, no sign-up, no tracking, no analytics • All processing happens entirely in your browser ━━━━━━━━━━━━━━━━━━━━━━━━ 👥 WHO IS IT FOR? ━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Developers testing URL parameters and debugging API links ✓ Digital marketers building UTM tracking campaigns ✓ Designers creating branded QR codes with custom logos and colors ✓ Sales teams sharing vCard contact QR codes ✓ Anyone needing fast, private, offline QR code generation ━━━━━━━━━━━━━━━━━━━━━━━━ ❓ FAQ ━━━━━━━━━━━━━━━━━━━━━━━━ Q: Is this QR code maker completely free? A: Yes — free forever. No ads, no premium tier, no limits. Q: Can I create a QR code with my company logo? A: Yes! Upload any image as a center logo. Error correction auto-upgrades to level H to keep it scannable. Q: Does it work without internet? A: Completely offline. Your URLs and images never leave your device. Q: What image formats can I decode? A: PNG, JPG, JPEG, GIF, WebP, and SVG. Q: Can I export high-resolution QR codes? A: Yes — download at 256, 512, 1024, or 2048 px in PNG or JPG format. Q: Can I make colored or branded QR codes? A: Yes — choose any foreground/background color or use one of 6 preset themes. ━━━━━━━━━━━━━━━━━━━━━━━━ 💬 FEEDBACK ━━━━━━━━━━━━━━━━━━━━━━━━ Found a bug or want a feature? Leave a review or use the Support tab. We read every message and ship updates regularly. ⭐ If this extension saves you time, a 5-star review takes 10 seconds and helps others find it — thank you!