Frequently Asked Questions

A QR (Quick Response) code is a two-dimensional barcode that stores information in a pattern of black and white squares. Unlike traditional barcodes that can only store about 20 characters, QR codes can hold thousands of characters of data including URLs, text, contact information, WiFi credentials, and more.

When you scan a QR code with your smartphone camera, the device decodes the pattern and performs an action — like opening a website, adding a contact, or connecting to WiFi.

QR codes were invented in 1994 by Masahiro Hara, an engineer at Denso Wave, a Japanese company that is a subsidiary of Toyota. The technology was originally created to track automotive parts during manufacturing. Denso Wave made the QR code openly available without exercising their patent rights, which led to its widespread adoption worldwide.

QR stands for "Quick Response." The name reflects one of the technology's key advantages: the ability to be decoded almost instantaneously, even from angles and in less-than-ideal conditions. This speed was crucial for the original manufacturing use case where efficiency was paramount.

Static QR codes (like those created by QR Now!) never expire. The data is encoded directly in the pattern itself, so as long as the destination exists (the website is live, the phone number is active), the QR code will work forever.

Dynamic QR codes, used by some paid services, can be set to expire because they redirect through a third-party server that can be configured with time limits.

A QR code's capacity depends on the type of data:

• Numeric only: Up to 7,089 characters
• Alphanumeric: Up to 4,296 characters
• Binary/byte: Up to 2,953 bytes
• Kanji: Up to 1,817 characters

However, more data means a more complex pattern, which can be harder to scan. For best results, keep your content as concise as possible.

Yes! QR Now! is 100% free with no hidden costs. You can generate unlimited QR codes, download them in any format (PNG or SVG), and use them for any purpose — personal or commercial. No registration or account required.

We sustain the service through minimal, non-intrusive advertising on our website.

QR Now! supports the most popular QR code types:

• URL: Links to websites
• Text: Plain text messages
• WiFi: Automatic WiFi connection
• vCard: Digital business cards
• Email: Pre-filled email messages
• Phone: Click-to-call phone numbers

PNG is a raster (pixel-based) format. It's best for:

• Digital use (websites, social media, emails)
• Small to medium print sizes
• When you need a quick, ready-to-use file

SVG is a vector format. It's best for:

• Print materials of any size
• Large format printing (banners, posters)
• When you need to scale without quality loss

Static QR codes (created by QR Now!) cannot be edited after creation because the data is encoded directly in the pattern. If you need to change the content, you'll need to create a new QR code.

Pro tip: If you think you might need to change the destination later, consider using a URL shortener (like bit.ly) and creating a QR code for the short URL. Then you can update where the short URL points to without changing the QR code itself.

Yes, using shorter URLs is generally a good practice. Benefits include:

• Simpler QR code pattern (easier to scan)
• Smaller minimum print size
• Better scanning in poor lighting
• Ability to update the destination (with URL shorteners)

Popular URL shorteners include bit.ly, tinyurl.com, and rebrand.ly.

On iPhone (iOS 11+):

1. Open the Camera app
2. Point at the QR code
3. Tap the notification banner that appears

On Android (9+):

1. Open the Camera app
2. Point at the QR code
3. Tap the link or use Google Lens

Most modern smartphones scan QR codes natively — no special app needed!

For most modern smartphones, no. iPhones running iOS 11+ and Android phones running Android 9+ have built-in QR scanning in the native camera app.

However, if your phone doesn't support native scanning, you can download free QR reader apps from the App Store or Google Play. Popular options include "QR Code Reader" and "Barcode Scanner."

Yes! Both iPhone and Android allow scanning QR codes from images:

iPhone: Open the image in Photos, then use the Live Text feature or long-press on the QR code.

Android: Open Google Lens and select the image, or some phones allow long-pressing QR codes in images.

The optimal scanning distance depends on the size of the QR code. As a general rule:

• Hold your phone 10-30 cm (4-12 inches) away for small QR codes
• The camera should be able to see the entire code including the white border
• Larger QR codes can be scanned from further away

The minimum size depends on scanning distance. Use this formula:

Minimum QR size = Scanning distance ÷ 10

Common guidelines:

• Business cards: 2 x 2 cm minimum
• Flyers: 3 x 3 cm minimum
• Posters: 10 x 10 cm minimum
• Billboards: Based on viewing distance

Yes, but maintain high contrast between the code and background. Best practices:

• Dark colors on light backgrounds work best
• Avoid similar colors (e.g., dark blue on black)
• Avoid yellow or light colors on white
• Always test before mass printing

Yes! The quiet zone (white border around the QR code) is essential for reliable scanning. It helps scanners identify where the code begins and ends.

The quiet zone should be at least 4 modules (small squares) wide on all sides. When placing QR codes in designs, don't crop this border or place other elements too close to it.

Common reasons and solutions:

• Poor lighting: Make sure there's adequate light on the code
• Too close/far: Adjust your distance (10-30 cm usually works)
• Dirty camera lens: Clean your phone's camera
• Damaged code: Part of the code might be obscured
• Low contrast: Colors might be too similar
• Printed too small: The code might be below minimum size
• Screen glare: Adjust angle when scanning from screens

If your QR code isn't going to the right destination, check:

• Did you copy the correct URL when creating the code?
• Has the URL changed since you created the code?
• Did you include "https://" in the URL?
• Is the destination website still live?

Unfortunately, static QR codes can't be edited — you'll need to create a new one with the correct URL.

WiFi QR code issues are usually due to:

• Wrong password: Double-check the password is correct
• Wrong security type: Make sure you selected WPA/WPA2 or WEP correctly
• Hidden network: Hidden networks may require additional steps
• Special characters: Some special characters in passwords can cause issues

QR codes themselves are safe — they're just a way to encode data. However, like any link, they can point to malicious websites. Safety tips:

• Only scan QR codes from trusted sources
• Check the URL before opening (most phones show a preview)
• Be cautious of QR codes in unexpected places
• Don't enter sensitive information on unfamiliar sites

No. QR Now! generates QR codes entirely in your browser. We don't store, track, or have access to the content of your QR codes. Your data stays on your device.

Simply scanning a QR code cannot hack your phone. QR codes can only trigger actions that your phone already supports (opening URLs, adding contacts, etc.).

The risk comes from what you do after scanning — like entering credentials on a phishing site. Always verify the destination before taking action.