Free QR Code Generator
Generate clean, static QR codes for links, text, and Wi-Fi instantly. Download vector SVG or high-resolution PNG. 100% private and runs locally in your browser.
How this QR code generator works
Quick Response (QR) codes represent binary data using a two-dimensional grid of black and white squares. When you enter a website URL or text snippet, this tool encodes the data into standard ISO/IEC 18004 matrix patterns directly within your browser.
Error correction levels explained
QR codes incorporate Reed-Solomon error correction algorithms, allowing scanners to reconstruct data even if a portion of the code is damaged, dirty, or obscured.
- Level L (Low): Recovers up to 7% of missing or obscured data. Produces the smallest matrix size.
- Level M (Medium): Recovers up to 15% of data. The optimal balance for standard marketing links.
- Level Q (Quartile): Recovers up to 25% of data. Recommended for mobile scanning in varying lighting.
- Level H (High): Recovers up to 30% of data. Best for industrial labels, outdoor signage, or when adding logos.
Static vs dynamic QR codes
Many online QR services generate "dynamic" QR codes that force your visitors through a proprietary tracking redirect. If that service changes pricing or shuts down, your printed codes break instantly. In contrast, Marqly generatespure static QR codes that store your raw URL directly. They will work indefinitely without subscription fees or risk of link rot.
Privacy and offline security
Your links, passwords, and sensitive text never travel over the network. Because the generation script runs exclusively on your client device, you can safely generate codes for private intranet addresses, sensitive Wi-Fi credentials, or confidential documents.
Frequently asked questions
Do the generated QR codes ever expire?
No. These are static QR codes that encode your text or URL directly into the matrix pattern. Because there is no intermediary redirect server or tracking URL involved, the QR code functions permanently as long as the destination URL remains active.
Is my data or URL sent to any server?
No. The entire matrix calculation and rendering happen 100% locally inside your web browser using client-side JavaScript. Nothing is sent to our servers or any third-party analytics provider.
Which error correction level should I choose?
Level M (15%) is standard for most digital displays and web links. Level H (30%) is best if you plan to print the QR code on physical merchandise or if parts of the code might suffer wear, tear, or obstruction.
Can I use the downloaded QR codes commercially?
Yes. You own full rights to use the generated SVG and PNG images in print, websites, packaging, flyers, restaurant menus, and advertising materials without attribution.
What is the difference between SVG and PNG formats?
SVG is a scalable vector format that remains perfectly sharp at any print size or billboard dimension. PNG is a raster image ideal for websites, email signatures, and slide presentations.
