Custom QR Code Generator
Generate permanent, customisable QR codes for web links, Wi-Fi credentials, and plain text with optional centre logo branding—100% locally in your browser with zero tracking redirects.
Direct destination URL encoded straight into the barcode matrix.
🎨 Centre Logo Mark (Optional)
🛠️ Customise Appearance & Resolution
Aim your mobile camera or scanner to verify instant decoding.
💡 What Can You Create?
Direct Web Links
Send visitors straight to menus, portfolios, or landing pages without expiring third-party redirect links.
Instant Wi-Fi Access
Let guests and customers join your Wi-Fi instantly with a simple camera scan—no typing long passwords.
Business & Branding
Embed your company logo and brand colours for business cards, flyers, exhibition booths, and stationery.
Labels & Packaging
Generate ultra-sharp print-ready QR codes for product packaging, event badges, and asset tags.
📋 How to Generate Your QR Code
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Select Payload Type: Choose between a direct website URL, plain text notes, or an instant Wi-Fi login profile.
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Enter Your Content: Type or paste your address or credentials. The live preview regenerates instantly in real time.
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Style & Brand (Optional): Match your brand with foreground and background colours, or drag in your business logo.
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Download or Copy: Export a high-resolution PNG up to 2048px for print, or copy straight to your clipboard.
✨ Best Practices for 100% Scan Reliability
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Maintain High Contrast: Keep the foreground noticeably darker than the background (e.g. dark blue or black on white). Inverted codes (white on black) can struggle on older scanners.
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Automatic Error Redundancy: When you add a logo, the tool automatically raises Error Correction to Level H (30% redundancy), ensuring scanners read past the central graphic effortlessly.
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Always Test Before Mass Printing: Aim your mobile camera at your screen before sending packaging or flyers to print to confirm instant focus and redirection.
⚙️
Technical Architecture
Under the Hood: ISO/IEC 18004 Matrix & Reed-Solomon Encoding
Inspect Specs
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Matrix Geometry & Polynomial Redundancy
The generator uses the QRious engine to compute 2D matrix symbol geometry, alignment patterns, timing tracks, and Reed-Solomon polynomial check characters directly within JavaScript. Raw string data is transformed into ISO/IEC 18004 compliant byte sequences without transmitting payloads to external servers.
When a centre logo is added, the HTML5 Canvas 2D API constructs an isolated protective clipping boundary and paints the rasterised image precisely over the central coordinate plane. The composite is rasterised into an uncompressed binary Blob directly in browser memory.
Format & Error Correction Specifications
| Payload Format | Encoding Schema | Recommended ECC | Export Resolutions | Typical Application |
|---|---|---|---|---|
| Website Link | https://... | Medium (15%) | 512 – 2048 px | Business cards, marketing flyers, menus, and product packaging. |
| Plain Text | UTF-8 String | Medium (15%) | 512 – 1024 px | Asset tracking, serial identification, and cryptographic public keys. |
| Wi-Fi Network | WIFI:S:...;T:...;P:...;; | Quartile (25%) | 1024 – 2048 px | Instant camera-scan guest Wi-Fi access in cafes, offices, and homes. |
| Branded Logo QR | Dynamic Layering | High (30%) | 2048 px (Ultra HD) | Large format signage, exhibition banners, and corporate merchandise. |
❓ Frequently Asked Questions
Do these QR codes ever expire or require a renewal subscription? ▼
Never. Because the data is encoded directly into the geometric 2D matrix without intermediary redirect servers or tracking proxies, the QR code will scan for as long as your destination website, Wi-Fi router, or text note exists.
Why does adding a centre logo change the Error Correction Level to High? ▼
A centre logo covers a portion of the QR modules. Switching to Error Correction Level H introduces 30% mathematical redundancy, ensuring scanner algorithms can reconstruct the obscured modules effortlessly.
How does the Wi-Fi auto-connect format work? ▼
The generator encodes the industry-standard WIFI:S:SSID;T:WPA;P:PASSWORD;; format. When scanned by iOS Camera, Android Lens, or modern mobile devices, the operating system prompts the user to join the wireless network with a single tap.
Can I print these QR codes on large posters or physical shop signs? ▼
Yes. Select the Ultra Print (2048 × 2048 px) resolution option before downloading to obtain an ultra-sharp, high-DPI raster graphic suitable for large signage, menu boards, and professional print materials.
Is my entered data or Wi-Fi password kept private? ▼
Yes, 100%. The QR matrix computation and image export are performed strictly inside your browser using client-side JavaScript and HTML5 Canvas. No passwords, URLs, or images are transmitted or saved anywhere.