QR Code Generator
Generate QR codes from any URL or text. Uses a public API — requires internet access.
Deep Dive
Generate QR codes for URLs, plain text, Wi-Fi credentials, and more instantly in the browser. Customize the size, error correction level, and colors. Download the QR code as a PNG or SVG for use in print or digital materials. No data is sent to any server.
Who uses this?
- Sharing a Wi-Fi password at a café or event
- Linking a printed flyer to a website
- Encoding a contact vCard for business cards
- Providing a quick payment link at a market stall
Examples
Input
https://karuvilab.comOutput
[QR code image encoding the URL]Common Errors & Fixes
QR code scans but opens a broken link
Double-check the URL for typos. Include the `https://` prefix.
QR code is too dense to scan reliably
Shorten the URL using a URL shortener, or increase the physical print size.
Downloaded PNG is blurry
Increase the size setting before downloading, or download the SVG for infinite resolution.
Expert FAQ
What is the error correction level?
Error correction allows QR codes to be read even when partially damaged or obscured. Level L (7%) is smallest; level H (30%) is most resilient but produces a denser code.
How much data can a QR code hold?
A standard QR code can store up to ~4,296 alphanumeric characters. Longer content produces a denser, harder-to-scan code.
Can I add a logo inside the QR code?
Yes, if the tool supports logo overlay. Use a high error correction level (Q or H) when adding a logo so the code remains scannable.
Will the QR code work forever?
The QR code itself never expires. However, if it encodes a URL, the code stops working if the URL is taken down.