A QR code (Quick Response code) is a two-dimensional barcode that stores information in a square pattern of black and white blocks. When you make a QR code from a link, people can scan it with their smartphone to go straight to the matching web page. This saves them from typing long URLs by hand and reduces errors.

QR codes are especially handy for:

  • Business cards - Add a QR code that leads straight to your website or LinkedIn profile
  • Flyers and posters - Let people find more information easily
  • Product labels - Link to manuals, specifications or reviews
  • Restaurants - Offer digital menus
  • Events - Share registration links or program information
  • Presentations - Give your audience direct access to resources

Step by step: making a QR code from a URL

Method 1: Online QR code generators

The easiest way to make a QR code is with a free online generator. Follow these steps:

Step 1: Open a QR code generator website such as:

Step 2: Select "URL" or "Website" as the type.

Step 3: Paste your full link into the input field. Make sure the URL starts with https:// or http://.

Step 4: Customize the design if you like. Many generators offer options for:

  • The color of the QR code
  • The background color
  • Adding a logo in the center
  • Rounded corners
  • A frame with text such as "Scan me"

Step 5: Choose the file format for the download:

  • PNG - Ideal for digital use and small prints
  • SVG - Vector format, scales without quality loss, perfect for large prints
  • PDF - Handy for professional printing
  • EPS - For use in graphic design software

Step 6: Download your QR code and test it by scanning it with your phone.

Method 2: Browser extensions for quick QR codes

If you need QR codes regularly, browser extensions are a lifesaver. With a single click you generate a QR code for the current page.

Popular extensions for Google Chrome:

  • The QR Code Extension - Simple and effective, instantly generates a scannable code
  • QR Code Generator - Also offers options for text and contact details
  • Quick QR - Minimalist interface with fast generation

For Mozilla Firefox:

  • QR Code Generator - Similar functionality to the Chrome version
  • Offline QR Code Generator - Works without an internet connection

Installation and use:

  1. Go to the Chrome Web Store or Firefox Add-ons
  2. Search for "QR Code Generator"
  3. Click "Add to Chrome" or "Add to Firefox"
  4. Confirm the installation
  5. Click the extension icon when you are on a page
  6. The QR code appears instantly and is ready to share or download

Method 3: QR codes in Google Chrome (built in)

Did you know Google Chrome has a built-in QR code generator? Here is how to use it:

  1. Open the page you want to make a QR code for
  2. Right-click anywhere on the page
  3. Select "Create QR Code for this page"
  4. A popup appears with the generated QR code
  5. Download the image or scan it directly with another device

This method needs no extra software and works on any website.

Short URLs versus long URLs: which works better?

When you make QR codes, the length of your URL is an important factor. The longer the URL, the more complex the QR code becomes. A more complex code has more blocks and can be harder to scan, especially in smaller prints.

Advantages of short URLs (via bit.ly, tinyurl.com, etc.)

  • Simpler QR code - Less data means a simpler pattern
  • Better scannability - Also works at smaller sizes
  • Tracking options - Services such as Bit.ly show how many times the link was clicked
  • Customizable links - Create a memorable short URL such as bit.ly/your-company

When long URLs are not a problem

  • For larger prints (A4 or bigger)
  • When the QR code is shown digitally on screens
  • If you don't need tracking
  • When you want to keep the original URL for transparency

Recommendations per situation

Use Recommendation Reason
Business card Short URL Limited space
Poster (A3+) Long URL is fine Enough scanning surface
Social media Short URL Tracking and looks
Official document Long URL Transparency matters more
Email signature Short URL Keeps it tidy

Sharing QR codes: print versus digital

QR codes for print

When you print QR codes, there are a few important points to keep in mind:

Minimum size: A QR code should be at least 2x2 centimeters for reliable scanning. For use at a distance (posters, billboards), the code needs to be larger.

Rule of thumb for size: The QR code should be 1/10th of the scanning distance. So for a poster viewed from 2 meters away, make the code at least 20 centimeters.

Contrast: Make sure there is enough contrast between the code and the background. Black on white works best. Avoid light colors or busy backgrounds.

File format: Use SVG or PDF for printing. These vector formats stay sharp at any scale.

Test print: Always make a test print first and scan the code with several devices before you order a large print run.

QR codes for digital sharing

Digital QR codes have different requirements:

Resolution: A PNG of at least 300x300 pixels is enough for most digital uses. For use on large screens, choose higher resolutions or vector formats.

Background: Transparent backgrounds (PNG with an alpha channel) are handy for integrating into designs.

Placement in documents: Make sure the QR code is not distorted when you insert it into Word, PowerPoint or other software. Lock the aspect ratio.

Digital channels:

  • Email: Add the QR code as an inline image, not as an attachment
  • Presentations: Show the code large enough for the audience to scan
  • Websites: Consider whether a direct link would be more convenient
  • Social media: Combine the QR code with a short description of what people will find after scanning

Advanced tips for professional use

Dynamic QR codes

Some services offer dynamic QR codes. The QR code itself stays the same, but you can change the URL behind it later. This is ideal for:

  • Printed material where you want to change the destination later
  • A/B testing different landing pages
  • Seasonal campaigns with changing content

Modern QR codes can have up to 30% of their surface damaged and still work thanks to built-in error correction. This makes it possible to place a small logo in the center. Keep in mind:

  • Keep the logo small (at most 20% of the QR code)
  • Test the code thoroughly after adding a logo
  • Use a high error correction level in the generator

Tracking and analytics

Want to know how often your QR code is scanned? Then use:

  • Bit.ly - Free basic statistics
  • QR Code Generator Pro - Extensive analytics
  • Google Analytics UTM parameters - Add tracking to your URL

Frequently asked questions (FAQ)

How long does a QR code keep working?

A static QR code works indefinitely as long as the URL behind it stays active. The code itself does not expire. Be careful when you use URL shortening services, though: if the service shuts down or deletes your account, the QR code stops working. For long-term use it is therefore wise to use direct URLs to domains you manage yourself.

Can I change the color of my QR code?

Yes, you can change the color, but keep scannability in mind. You get the best results with a dark foreground color on a light background. Avoid low-contrast color combinations such as yellow on white or light blue on light gray. Red, dark blue and dark green work well as alternatives to black. Always test colored QR codes with several devices, since older phones sometimes struggle with unconventional color schemes.

What is the difference between a static and a dynamic QR code?

A static QR code contains the full URL directly in the pattern. It always works but cannot be changed after it is created. A dynamic QR code contains a short reference to a server that redirects to your actual URL. The advantage is that you can change the destination later without making a new code. Dynamic codes usually require a paid subscription and depend on the service provider. For one-off use, static codes are fine; for marketing campaigns or material that lasts a long time, dynamic codes are worth the investment.

Conclusion

Making a QR code from a link is easy and opens up countless possibilities for both personal and professional use. Whether you choose an online generator, a browser extension or Chrome's built-in feature, you'll have a working QR code within seconds. Don't forget to test before you print, choose the right format for your use, and consider short URLs for complex links. With this knowledge you can start sharing your content through QR codes right away.

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