What is a QR code?
A QR code is a two-dimensional barcode that stores information such as URLs, WiFi credentials or text. Read more on Wikipedia.
How do I generate a QR code on this site?
Select the data type, enter your information, click Generate QR Code, then download the image.
Is the QR Code Generator really free?
Yes. 100 % free. No watermark, no login and no subscription required.
Can I make a WiFi QR code?
Absolutely. Choose the WiFi option, enter your SSID and password, then generate. Watch a quick tutorial.
Do the QR codes expire?
No. Static QR codes last indefinitely, as long as the underlying link or data remains valid.
Can I customize the color or size of my QR code?
Yes. Pick any foreground and background color and select from multiple preset sizes (150 × 150 through 4096 × 4096 px). For posters or signage, choose the largest size so the code remains sharp after scaling.
Will my QR code still work if I change the link later?
Static QR codes always point to the exact data you encoded. If you may need to update the destination, create a short redirect URL (e.g. yourdomain.com/go) and encode that instead. You can change the redirect target any time without reprinting the code.
Are static QR codes safe for personal or business use?
They are as safe as the content you embed. Double-check every URL before generating, and avoid putting sensitive information (plain-text passwords or private documents) in a publicly posted code. For WiFi, use a guest network with limited permissions.
What size should my QR code be for printing?
As a rule of thumb, multiply the expected viewing distance by 10. For a handout viewed at 20–30 cm, 2 cm works. For a poster viewed at 2–3 m, use 8–10 cm or larger. Always keep a clear margin (quiet zone) around the code.
Which color combinations scan best?
Use a dark foreground on a light background. Black on white is most reliable. Deep navy, forest green, or dark purple on off‑white also work. Avoid light‑on‑light, low contrast gradients, and busy photo backgrounds.
Should I download PNG or SVG?
Choose SVG for printing because it scales to any size without losing sharpness. Use PNG/JPG/WebP for screens and documents. If your design app supports it, prefer SVG for everything print‑related.
What is the quiet zone and why does it matter?
The quiet zone is the empty border around the code. It helps scanners detect the edges. Leave at least 4 modules of space on all sides and avoid cropping the dots to the edge of an image.
My QR code won’t scan. What should I try?
- Increase contrast: darker dots and a lighter background.
- Make the code larger or print at higher resolution.
- Ensure there is a quiet zone around the code.
- Shorten the URL so the pattern is less dense.
- Test with multiple camera apps in good lighting.