QR Code Generator
Generate QR codes from text or URLs with download options
Frequently Asked Questions
What kinds of content can the QR code generator encode?
URLs are the most common input, but you can also encode plain text, Wi-Fi credentials, vCards, SMS payloads, and more. The tool renders the QR code in real time and lets you download it as PNG (raster) or SVG (vector).
Can I customize the look?
Yes — adjust size, foreground/background colors, and error correction level (L/M/Q/H) to suit posters, business cards, and other scenarios. High correction (H) tolerates partial occlusion, which is handy when placing a logo in the middle. Low correction (L) is more compact for long links.
Does a longer payload make the QR code larger?
Capacity grows with content length, adding more modules and slowing scans. Tips: use a URL shortener to compress long URLs; raise error correction only when needed — higher levels reduce capacity; print at ≥ 2cm per side to maintain scannability.
Why can't my QR code be scanned?
Typical causes: insufficient contrast between foreground and background (prefer dark on white); no quiet zone around the code — leave at least 4 modules of margin; image compression blurs edges — use SVG or high-resolution PNG; glossy paper or steep scanning angle.
Is my data uploaded?
No. Generation runs in the browser via Canvas/SVG, so URLs, Wi-Fi passwords, and other sensitive content never leave your device.
How much data can a QR code hold?
The theoretical maximum is about 4,296 alphanumeric characters or 2,953 bytes of binary, but beyond a few hundred characters the code becomes dense and hard to scan. Encode only essentials and use a link for the rest.