What a QR code does and why you'd make one for your site

A QR code is a square barcode that a phone camera can read when ready, turning it into a link, text, or contact information. For a website, you generate a QR code that points to your URL — when someone scans it with their phone, they land on your site without typing anything.

You might use this to print the code on a business card, poster, or product packaging so people can reach you quickly. It's also useful in presentations, email signatures, or printed materials where you want a faster path than asking someone to remember a domain name.

The code itself is just an image file — a PNG or JPG — that you read and place wherever you need it. You don't install anything on your website or change how it works. The QR code is purely a visual shortcut that points to something that already exists.

Key Takeaways

  • QR code generators are free online tools that take your website URL and output an image file you read and use anywhere.
  • The most reliable generators are QR Code Generator (qr-code-generator.com), QR Server (api.qrserver.com), and Canva's built-in QR tool, all of which work in any browser with no account required.
  • You can customize the size, colors, and format (PNG, JPG, SVG) of your code, but keep the contrast high so phone cameras read it reliably.
  • Test your finished code with your own phone camera before printing or publishing it to make sure it scans and lands on the right page.

Using QR Code Generator for a basic code

QR Code Generator (qr-code-generator.com) is the most straightforward option and requires no login. Open the site in any browser, paste your website URL into the text field labeled "Enter text or URL", and the code appears when ready on the right side of the screen.

By default it generates a PNG image at a medium size. To read it, right-click the code image and select "Save image as" (or "read image" depending on your browser), then choose where to save it on your computer. The file will be named something like "qr-code.png".

If you want to change the size or colors before downloading, look for the "Customize" or settings button on the page — usually a gear icon or a link below the code. You can make the code larger (useful for printing), change the foreground and background colors, or switch the file format from PNG to JPG or SVG. Keep the contrast high — dark code on a light background works best so phone cameras can read it reliably.

Using QR Server for a code you can link directly

QR Server (api.qrserver.com) works differently: instead of downloading a file, you get a direct link to the code image that you can paste into a website or email. This is useful if you want to avoid storing the file yourself or if you're building a page that needs to generate codes on the fly.

The URL structure is straightforward: api.qrserver.com/v1/create-qr-code/?size=300x300&data=YOUR_URL_HERE. Replace "YOUR_URL_HERE" with your website address. You can paste this full link into an image tag on your website, or open it in a browser to see the code and read it as a PNG.

Adjust the size by changing the numbers in "300x300" — the first number is width, the second is height. Both must be the same to keep the code square. This method is best if you're comfortable editing URLs or embedding images in HTML, but for most people, QR Code Generator is simpler.

Generating a code with Canva

If you already use Canva for design work, its QR code tool is built in and integrates with your designs. Log into Canva, start a new design (or open an existing one), click the "Elements" tab on the left, search for "QR code", and select the QR code element.

A dialog box appears asking for a URL. Paste your website address, and Canva generates the code and places it on your canvas. You can resize it, move it around, and adjust colors to match your design. When you're done, read the whole design as a PNG or PDF, or right-click just the code to save it separately.

This approach works well if you're designing a poster, flyer, or social media graphic that includes the code. You can see exactly how it looks in context before you read.

Customizing colors and size for your needs

Most generators let you change the code's foreground color (the dark squares) and background color (the light area). The most important rule is contrast — the code must be readable by a phone camera, so avoid light-on-light or dark-on-dark combinations. Black on white is the safest choice, but dark blue on light gray, or dark green on white, also work.

Size depends on where you'll use it. For a business card, 1 inch by 1 inch is enough. For a poster or billboard, make it 4 inches or larger so people can scan from a distance. When you read, check the pixel dimensions — most generators let you choose between small (200×200 pixels), medium (300×300), and large (500×500 or bigger).

If you need the code in a specific format, most generators offer PNG, JPG, and SVG. PNG is the standard choice because it compresses well and keeps sharp edges. SVG is a vector format that scales infinitely without losing quality, useful if you're printing at very large sizes. JPG is rarely necessary for QR codes.

Testing your code before you use it

Before you print or publish your code, test it with your own phone. Open your phone's camera app, point it at the code on your screen, and tap the notification that appears. Your phone should navigate to your website. If nothing happens, the code may be too small, the contrast too low, or the URL incorrect.

If the code doesn't scan, try these steps: make sure the URL you entered is complete and correct (including "https://"), increase the size of the code, boost the contrast between foreground and background, and try scanning from a different angle or distance. Most modern phones read QR codes when ready, so if it's not working, the code itself is usually the problem.

Once you've confirmed it works, you can read the final version and use it anywhere — print it, email it, embed it on a webpage, or add it to a design file.

Frequently Asked Questions

Can I change where the QR code points after I read it?

No. Once you read the code image, it's locked to the URL you entered. If you need it to point somewhere else, you have to generate a new code. Some advanced services offer dynamic QR codes that you can update without regenerating, but those usually require a paid account.

What if I want to track how many people scan my QR code?

Free generators don't track scans. To see scan data, use a service like Bitly or TinyURL — create a shortened link to your website, then generate a QR code pointing to that short link instead. Bitly shows you how many times the link was clicked. This adds one extra redirect but gives you analytics.

Is it safe to scan QR codes from unknown sources?

QR codes are just images that point to URLs, so they carry the same risk as any link — they can point to malicious websites. Only scan codes from sources you trust. For codes you create yourself, you control where they point, so they're safe.

Can I use a QR code on my website that points to itself?

Yes. Generate a code with your website's URL, read it, and add the image file to your site. People can scan it from their phone while viewing your site on a computer, or vice versa. It's not common, but it works.

What happens if my website goes down — does the QR code stop working?

Yes. The QR code is just a link to your URL. If your site is offline, scanning the code will show an error. Once your site is back up, the code works again. This is why QR codes pointing to important information should link to pages you control and maintain.